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YOUR PRIVACY CHOICES We and our partners store and access non-sensitive information from your device, like cookies, and process personal data, like IP addresses and unique identifiers to personalize content and ads, measure performance, and analyze audiences. By clicking Accept, you consent to this data collection and processing by us and our 200 partners. You can select Reject to continue with only strictly necessary cookies or Customize to manage your preferences. Some processing of your personal data may not require your consent, but you have a right to object to such processing. You can withdraw your consent at any time from the consent preferences link in the footer of any ResearchGate page. For more information, see our Privacy Policy. We and our partners process data for the following purposesPersonalised advertising and content, advertising and content measurement, audience research and services development , Precise geolocation data, and identification through device scanning, Store and/or access information on a device CustomizeRejectAccept * Home * Centre Hospitalier Régional Universitaire de Nîmes * Department of Medical Imaging * Joël Greffier JOËL GREFFIER CENTRE HOSPITALIER RÉGIONAL UNIVERSITAIRE DE NÎMES · DEPARTMENT OF MEDICAL IMAGING Ph.D Contact Connect with experts in your field Join ResearchGate to contact this researcher and connect with your scientific community. Join for free Log in Contact Connect with experts in your field Join ResearchGate to contact this researcher and connect with your scientific community. Join for free Log in About Publications 124 Network ABOUT 124 Publications 38,023 Reads How we measure 'reads' A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more 2,237 Citations Introduction Joël Greffier currently works at the Department of Medical Imaging, Centre Hospitalier Régional Universitaire de Nîmes. Their most recent publication is 'Low and ultra-low dose radiation in CT: Opportunities and limitations'. Skills and Expertise Signaling Radiation Protection Computed Tomography Diagnostic Radiology Interventional Radiology Imaging Medical Imaging Medical Imaging Physics Medical Image Analysis Radiography Additional affiliations February 2012 - present Centre Hospitalier Régional Universitaire de Nîmes * Department of Radiology * Nîmes, France Position * Medical Physicist PhD December 2009 - January 2012 Centre Hospitalier Universitaire de Montpellier * Département d'Imagerie médicale Position * Medical Professional Education December 2013 - November 2016 Université de Montpellier Field of study * Doctorat spécialité Biostatistiques/Physique Médicale September 2008 - December 2009 INSTN, CEA Saclay Field of study * Diplôme de Qualification en Physique Radiologique et Médicale September 2007 - August 2008 Université Paul Sabatier de Toulouse Field of study * Master 2 Radiophysique et Imagerie Médicale Show All PUBLICATIONS Publications (124) Potential dose reduction and image quality improvement in chest CT with a photon-counting CT compared to a new dual-source CT Article * Oct 2024 * Joël Greffier * Djamel Dabli * Sebastian Faby * [...] * Jean-Paul Beregi View Image Quality Comparison of Three 3D Mobile X-Ray Imaging Guidance Devices Used in Spine Surgery: A Phantom Study Article Full-text available * Oct 2024 * Djamel Dabli * Cécile Salvat * Isabelle Fitton * [...] * Lama Hadid-Beurrier An image-quality CT phantom was scanned with three different 3D X-ray imaging guidance devices in the operating theatre: O-Arm, Loop-X, and Airo TruCT. Default acquisition and reconstruction parameters for lumbar spine procedures were used on each device. The tube current was set to a dose level of around 27 mGy. A task-based image quality assessme... View Imaging in France: 2024 Update Article * Oct 2024 * Maxime Barat * Amandine Crombe * Tom Boeken * [...] * Philippe Soyer Radiology in France has made major advances in recent years through innovations in research and clinical practice. French institutions have developed innovative imaging techniques and artificial intelligence applications in the field of diagnostic imaging and interventional radiology. These include, but are not limited to, a more precise diagnosis... View Ultra-high resolution spectral photon-counting CT outperforms dual layer CT for lung imaging: Results of a phantom study Article * Oct 2024 * Hugo Lacombe * Joey Labour * Fabien de Oliveira * [...] * Salim Si-Mohamed View Comparison between artificial intelligence solution and radiologist for the detection of pelvic, hip and extremity fractures on radiographs in adult using CT as standard of reference Article * Sep 2024 * Maxime Pastor * Djamel Dabli * Raphaël Lonjon * [...] * Joël Greffier View Photon-counting CT systems: A technical review of current clinical possibilities Article * Sep 2024 * Joël Greffier * Anais Viry * Antoine Robert * [...] * Salim Si-Mohamed View Comparison of the spectral performance between two dual-source CT systems on low-energy virtual monoenergetic images: A phantom study Article Full-text available * Jul 2024 * Joël Greffier * Sebastian Faby * Maxime Pastor * [...] * Djamel Dabli View Highlights from the 60th Scientific Congress of the French Society of Medical Physics in Avignon Article Full-text available * Jul 2024 * Catherine Khamphan * Caroline Murat * Joël Greffier * [...] * Marie-Claude Biston View Abdominal image quality and dose reduction with energy-integrating or photon-counting detectors dual-source CT: A phantom study Article * May 2024 * Joël Greffier * Djamel Dabli * Sebastian Faby * [...] * Jean Paul Beregi View Ultra-low dose chest CT for the diagnosis of pulmonary arteriovenous malformation in patients with hereditary hemorrhagic telangiectasia Article * Apr 2024 * Jean-Etienne Delpon * Joël Greffier * Hugo Lacombe * [...] * Salim Si-Mohamed View Comparison of low-energy virtual monoenergetic images between photon-counting CT and energy-integrating detectors CT: A phantom study Article * Mar 2024 * Joël Greffier * Sebastian Faby * Maxime Pastor * [...] * Djamel Dabli View Improving image quality of the middle ear with ultra-high-resolution CT coupled with deep-learning image reconstruction algorithm Article * Feb 2024 * Joël Greffier * Philippe Soyer * Djamel Dabli View Determining the Optimal Energy Level of Virtual Monoenergetic Images in Dual-Source CT for Diagnosis of Bowel Obstruction and Colitis Article Full-text available * Nov 2023 * Loris Lahuna * Joël Greffier * Jean Goupil * [...] * Djamel Dabli Images from 64 patients undergoing an enhanced abdominal-pelvis scan at portal phase in dual-energy CT mode for the diagnosis of colitis or bowel obstruction were retrospectively analyzed. Acquisitions were performed on a third-generation dual-source CT (DSCT) 100/Sn150 kVp. Mixed images were generated, as well as virtual monoenergetic images (VMIs... View Reply to the Letter to the Editor: Quantitative accuracy of virtual monoenergetic images from multi-energy CT Article Full-text available * Nov 2023 * Joël Greffier * Yoad Yagil * Klaus Erhard * [...] * Salim Si-Mohamed View Comparison of two deep-learning image reconstruction algorithms on cardiac CT images: A phantom study Article * Nov 2023 * Joël Greffier * Maxime Pastor * Salim Si-Mohamed * [...] * Djamel Dabli View +2 Safety and Efficacy of Prestige Coils for Embolization of Vascular Abnormalities: The Embo-Prestige Study Article Full-text available * Oct 2023 * Julien Frandon * Romaric Loffroy * Clement Marcelin * [...] * Hervé Rousseau A wide variety of coils are available for vascular embolization. This study aimed to evaluate the safety and efficacy of a new Prestige coil. We carried out retrospective analysis of a multicenter’s registry data collected between February 2022 and November 2022. The choice of embolization agent used to treat peripheral vascular anomalies was left... View Impact of Phantom Size on Low-Energy Virtual Monoenergetic Images of Three Dual-Energy CT Platforms Article Full-text available * Sep 2023 * Joël Greffier * Claire Van Ngoc Ty * Isabelle Fitton * [...] * Djamel Dabli The purpose of this study was to compare the quality of low-energy virtual monoenergetic images (VMIs) obtained with three Dual-Energy CT (DECT) platforms according to the phantom diameter. Three sections of the Mercury Phantom 4.0 were scanned on two generations of split-filter CTs (SFCT-1st and SFCT-2nd) and on one Dual-source CT (DSCT). The nois... View Spectral performance of two split‐filter dual‐energy CT systems: A phantom study Article Full-text available * Sep 2023 * Joël Greffier * Claire Van Ngoc Ty * Isabelle Fitton * [...] * Djamel Dabli Background Recently, a second generation of split filter dual‐energy CT (SFCT) platform has been developed. The thicknesses of the gold and tin filters used to obtain both low‐ and high‐energy spectra have been changed. These differences in filter thickness may affect the spectral separation between the two spectra and thus the quality of spectral... View Safety and Efficacy of Prestige Coils for Embolization of Vascular Abnormalities: The Embo-Prestige Study Preprint Full-text available * Aug 2023 * Julien Frandon * Romaric Loffroy * Clement Marcelin * [...] * Hervé Rousseau : Background: A wide variety of coils are available for vascular embolization. This study aims to evaluate the safety and efficacy of a new Prestige coil. Method: Retrospective analysis of a multicentre registry data collected between February 2022 and November 2022. The choice of the embolization agent used was left at the investigator’s discretio... View +1 Impact of Phantom Size on Low-Energy Virtual Monoenergetic Images of Three Dual-Energy CT Platforms Preprint Full-text available * Aug 2023 * Joël Greffier * Claire Van Ngoc Ty * Isabelle Fitton * [...] * Djamel Dabli To compare the quality of low-energy VMIs obtained with three DECT platforms according to phantom diameter. Three sections of the Mercury Phantom 4.0 were scanned on two generations of split-filter CTs (SFCT-1st and SFCT-2nd) and on one Dual-source CT (DSCT). Noise power spectrum (NPS), task-based transfer function (TTF) and detectability index (d’... View Impact of tin filter on the image quality of ultra-low dose chest CT: A phantom study on three CT systems Article * Jun 2023 * Joël Greffier * Isabelle Fitton * Claire Van Ngoc Ty * [...] * Djamel Dabli Purpose: The purpose of this study was to assess the impact of a tin filter on the image quality of ultra-low dose (ULD) chest computed tomography (CT) on three different CT systems. Materials and methods: An image quality phantom was scanned on three CT systems including two split-filter dual-energy CT (SFCT-1 and SFCT-2) scanners and one dual-... View +1 Impact of the automatic tube current modulation (ATCM) system on virtual monoenergetic image quality for dual-source CT: A phantom study Article Full-text available * Mar 2023 * Djamel Dabli * Quentin Durand * Julien Frandon * [...] * Joël Greffier Purpose: To assess the impact of the automatic tube current modulation (ATCM) on virtual monoenergetic images (VMIs) quality in dual-source CT(DSCT). Materials and methods: Acquisitions were performed on DSCT using the Mercury phantom. The acquisition parameters for an abdomen-pelvic examination with single-energy CT(SECT) and dual-energy CT(DEC... View First Results of a New Deep Learning Reconstruction Algorithm on Image Quality and Liver Metastasis Conspicuity for Abdominal Low-Dose CT Article Full-text available * Mar 2023 * Joël Greffier * Quentin Durand * Chris Serrand * [...] * Julien Frandon The study’s aim was to assess the impact of a deep learning image reconstruction algorithm (Precise Image; DLR) on image quality and liver metastasis conspicuity compared with an iterative reconstruction algorithm (IR). This retrospective study included all consecutive patients with at least one liver metastasis having been diagnosed between Decemb... View Virtual monochromatic images for coronary artery imaging with a spectral photon-counting CT in comparison to dual-layer CT systems: a phantom and a preliminary human study Article Full-text available * Mar 2023 * Joël Greffier * Salim Si-Mohamed * Hugo Lacombe * [...] * Philippe C Douek Objectives: To evaluate the quality of virtual monochromatic images (VMIs) from spectral photon-counting CT (SPCCT) and two energy-integrating detector dual-energy CT (EID-DECT) scanners from the same manufacturer, for the coronary lumen. Methods: A 21-cm section of the Mercury v4.0 phantom was scanned using a cardiac CT protocol. VMIs from 40 t... View Brain image quality according to beam collimation width and image reconstruction algorithm: A phantom study Article * Mar 2023 * Joël Greffier * Anais Viry * Quentin Durand * [...] * Damien Racine Purpose: To compare quantitatively and qualitatively brain image quality acquired in helical and axial modes on two wide collimation CT systems according to the dose level and algorithm used. Methods: Acquisitions were performed on an image quality and an anthropomorphic phantoms at three dose levels (CTDIvol: 45/35/25 mGy) on two wide collimati... View Dose variations for biopsy, puncture and drainage under CT guidance: A national survey in 1709 patients Article Full-text available * Mar 2023 * Laure Berny * Joël Greffier * Chris Serrand * [...] * Julien Frandon Background A nation-wide study recently published the dose reference levels for the main CT-guided interventional procedures in 5001 patients. We assessed the impact of patient's age, sex and targeted organ on the patient dose during thoracic and abdominopelvic biopsies and punctures/drainages. Patients and methods Data were extracted from the pre... View Task-Based Image Quality Assessment Comparing Classical and Iterative Cone Beam CT Images on Halcyon® Article Full-text available * Jan 2023 * Marion Lassot-Buys * Rodolfe Verstraet * Djamel Dabli * [...] * Joël Greffier Background: Despite the development of iterative reconstruction (IR) in diagnostic imaging, CBCT are generally reconstructed with filtered back projection (FBP) in radiotherapy. Varian medical systems, recently released with their latest Halcyon® V2.0 accelerator, a new IR algorithm for CBCT reconstruction. Purpose: To assess the image quality o... View Comparison of image quality of two versions of deep-learning image reconstruction algorithm on a rapid kV-switching CT: a phantom study Article Full-text available * Jan 2023 * Djamel Dabli * Maeliss Loisy * Julien Frandon * [...] * Joël Greffier Background To assess the impact of the new version of a deep learning (DL) spectral reconstruction on image quality of virtual monoenergetic images (VMIs) for contrast-enhanced abdominal computed tomography in the rapid kV-switching platform. Methods Two phantoms were scanned with a rapid kV-switching CT using abdomen-pelvic CT examination paramet... View Proposal for a computed tomography score to predict major complications requiring hospitalization after percutaneous lung biopsy: a single-center retrospective study Article * Jan 2023 * Satcha Ortmans * Fabien de Oliveira * Chris Serrand * [...] * Julien Frandon View Spectral CT imaging: Technical principles of dual-energy CT and multi-energy photon-counting CT Article Full-text available * Nov 2022 * Joël Greffier * Nicolas Villani * Didier Defez * [...] * Salim Si-Mohamed Spectral computed tomography (CT) imaging encompasses a unique generation of CT systems based on a simple principle that makes use of the energy-dependent information present in CT images. Over the past two decades this principle has been expanded with the introduction of dual-energy CT systems. The first generation of spectral CT systems, represen... View +1 Retrospective Analysis of Doses Delivered during Embolization Procedures over the Last 10 Years Article Full-text available * Oct 2022 * Joël Greffier * Djamel Dabli * Tarek Kammoun * [...] * Julien Frandon Background: This study aimed to retrospectively analyze dosimetric indicators recorded since 2012 for thoracic, abdominal or pelvic embolizations to evaluate the contribution of new tools and technologies in dose reduction. Methods: Dosimetric indicators (dose area product (DAP) and air kerma (AK)) from 1449 embolizations were retrospectively re... View Highlights from the 59th scientific congress of the French Society of Medical Physics Article Full-text available * Sep 2022 * Marie-Claude Biston * Philippe Meyer * Ludovic Ferrer * [...] * C. Lafond View Contribution of an artificial intelligence deep-learning reconstruction algorithm for dose optimization in lumbar spine CT examination: A phantom study Article * Sep 2022 * Joël Greffier * Julien Frandon * Quentin Durand * [...] * Djamel Dabli Purpose The purpose of this study was to assess the impact of the new artificial intelligence deep-learning reconstruction (AI-DLR) algorithm on image quality and radiation dose compared with iterative reconstruction algorithm in lumbar spine computed tomography (CT) examination. Materials and methods Acquisitions on phantoms were performed using... View iQMetrix-CT: New software for task-based image quality assessment of phantom CT images Article Full-text available * Jul 2022 * Joël Greffier * Yves Barbotteau * François Gardavaud The purpose of this article was to explain how the new iQMetrix-CT software works, as well as to describe its current potential and discuss its future applications. iQMetrix-CT was developed by a working group from the French Society of Medical Physicists (SFPM). This software calculates three advanced metrics, which have been adapted to take into... View Improved image quality and dose reduction in abdominal CT with deep-learning reconstruction algorithm: a phantom study Article * Jul 2022 * Joël Greffier * Quentin Durand * Julien Frandon * [...] * Djamel Dabli Objectives: To assess the impact of a new artificial intelligence deep-learning reconstruction (Precise Image; AI-DLR) algorithm on image quality against a hybrid iterative reconstruction (IR) algorithm in abdominal CT for different clinical indications. Methods: Acquisitions on phantoms were performed at 5 dose levels (CTDIvol: 13/11/9/6/1.8 mG... View Impact of an artificial intelligence deep‐learning reconstruction algorithm for CT on image quality and potential dose reduction: A phantom study Article Full-text available * Jun 2022 * Joël Greffier * Salim Si-Mohamed * Julien Frandon * [...] * Djamel Dabli Background Recently, computed tomography (CT) manufacturers have developed deep‐learning‐based reconstruction algorithms to compensate for the limitations of iterative reconstruction (IR) algorithms, such as image smoothing and the spatial resolution's dependence on contrast and dose levels. Purpose To assess the impact of an artificial intelligen... View Microwave Ablation of Liver, Kidney and Lung Lesions: One-Month Response and Manufacturer’s Charts’ Reliability in Clinical Practice Article Full-text available * May 2022 * Julien Frandon * Philippe Akessoul * Tarek Kammoun * [...] * Joël Greffier Background: Microwave ablation systems allow for performing tumoral destruction in oncology. The objective of this study was to assess the early response and reliability of the microwave ablation zone size at one month for liver, kidney and lung lesions, as compared to the manufacturer’s charts. Methods: Patients who underwent microwave ablation wi... View Retrospective analysis of dose delivered to the uterus during CT examination in pregnant women Article * Mar 2022 * Djamel Dabli * Melinee Linard * Quentin Durand * [...] * Joël Greffier Purpose: The purpose of this study was to analyze the dose to the uterus (UD) calculated for pregnant women per computed tomography (CT) acquisition and per CT examination in our Institution. Materials and methods: Consecutive pregnant women who underwent CT examination from June 2014 to February 2022 and for whom UD calculation was performed by a... View Coronary CT Angiography with Photon-counting CT: First-In-Human Results Article Full-text available * Feb 2022 * Salim Si-Mohamed * Sara Boccalini * Hugo Lacombe * [...] * Philippe C Douek Background Spatial resolution, soft-tissue contrast, and dose-efficient capabilities of photon-counting CT (PCCT) potentially allow a better quality and diagnostic confidence of coronary CT angiography (CCTA) in comparison to conventional CT. Purpose To compare the quality of CCTA scans obtained with a clinical prototype PCCT system and an energy-i... View Comparison of peak skin dose and dose map obtained with real-time software and radiochromic films in patients undergoing abdominopelvic embolization Article * Feb 2022 * Joël Greffier * Asmaa Belaouni * Djamel Dabli * [...] * Julien Frandon Purpose The purpose of this study was to compare peak skin dose (PSD) and dose map calculated by Dose-Tracking-System® (DTS) software and measured with radiochromic films in patients undergoing abdominopelvic embolization. Material and methods The PSD measured by radiochromic films (PSDFilm) or calculated by DTS software (PSDDTS) were compared in... View Phantom task‐based image quality assessment of three generations of rapid kV‐switching dual‐energy CT systems on virtual monoenergetic images Article * Feb 2022 * Joël Greffier * Anais Viry * Yves Barbotteau * [...] * Djamel Dabli Purpose: To compare the spectral performance of three rapid kV switching dual-energy CT (DECT) systems on virtual monoenergetic images (VMIs) at low-energy levels on abdominal imaging. Methods: A multi-energy phantom was scanned on three DECT systems equipped with three different gemstone spectral imaging (GSI) platforms: GSI (1st generation, GS... View Effect of a new deep learning image reconstruction algorithm for abdominal computed tomography imaging on image quality and dose reduction compared with two iterative reconstruction algorithms: a phantom study Article Full-text available * Jan 2022 * Joël Greffier * Djamel Dabli * Aymeric Hamard * [...] * Jean-Paul Beregi Background: New reconstruction algorithms based on deep learning have been developed to correct the image texture changes related to the use of iterative reconstruction algorithms. The purpose of this study was to evaluate the impact of a new deep learning image reconstruction [Advanced intelligent Clear-IQ Engine (AiCE)] algorithm on image-qualit... View +1 Performance of Spectral Photon-Counting Coronary CT Angiography and Comparison with Energy-Integrating-Detector CT: Objective Assessment with Model Observer Article Full-text available * Dec 2021 * David C. Rotzinger * Damien Racine * Fabio Becce * [...] * Philippe C Douek Aims: To evaluate spectral photon-counting CT's (SPCCT) objective image quality characteristics in vitro, compared with standard-of-care energy-integrating-detector (EID) CT. Methods: We scanned a thorax phantom with a coronary artery module at 10 mGy on a prototype SPCCT and a clinical dual-layer EID-CT under various conditions of simulated pat... View Performance of spectral photon-counting coronary CT angiography and comparison with energy-integrating-detector CT: objective assessment with model observer Preprint Full-text available * Dec 2021 * David C. Rotzinger * Damien Racine * Fabio Becce * [...] * Philippe C Douek Aims: To evaluate spectral photon-counting CT's (SPCCT) objective image quality characteristics in vitro, compared with standard-of-care energy-integrating-detector (EID) CT. Methods: We scanned a thorax phantom with a coronary artery module at 10 mGy on a prototype SPCCT and a clinical dual-layer EID-CT under various conditions of simulated patien... View Optimization of image quality and accuracy of low iodine concentration quantification as function of dose level and reconstruction algorithm for abdominal imaging using dual-source CT: A phantom study Article * Oct 2021 * Djamel Dabli * Julien Frandon * Asmaa Belaouni * [...] * Joël Greffier Purpose The purpose of this study was to assess the impact of advanced modeled iterative reconstruction (ADMIRE) algorithm and dose levels on the accuracy of Hounsfield unit (HU) measurement, image noise and contrast-to-noise ratio (CNR) in virtual monochromatic images (VMIs) with low iodine concentrations, and the accuracy of iodine quantification... View +1 Comparison of two versions of a deep learning image reconstruction algorithm on CT image quality and dose reduction: A phantom study Article Full-text available * Sep 2021 * Joël Greffier * Djamel Dabli * Julien Frandon * [...] * Jean‐Paul Beregi Purpose To compare the impact on CT image quality and dose reduction of two versions of a Deep Learning Image Reconstruction algorithm. Material and methods Acquisitions on the CT ACR 464 phantom were performed at five dose levels (CTDIvol: 10/7.5/5/2.5/1 mGy) using chest or abdomen pelvis protocol parameters. Raw data were reconstructed using the... View Comparison of two deep learning image reconstruction algorithms in chest CT images: A task-based image quality assessment on phantom data Article * Sep 2021 * Joël Greffier * Julien Frandon * Salim Si-Mohamed * [...] * Jean-Paul Beregi Purpose The purpose of this study was to compare the effect of two deep learning image reconstruction (DLR) algorithms in chest computed tomography (CT) with different clinical indications. Material and methods Acquisitions on image quality and anthropomorphic phantoms were performed at six dose levels (CTDIvol: 10/7.5/5/2.5/1/0.5mGy) on two CT sc... View A retrospective comparison of organ dose and effective dose in percutaneous vertebroplasty performed under CT guidance or using a fixed C-arm with a flat-panel detector Article * Aug 2021 * Joël Greffier * Aymeric Hamard * Laure Berny * [...] * Jean-Paul Beregi Purpose To compare the organ-dose and effective-dose (E) delivered to the patient during percutaneous vertebroplasty (PVP) of one thoracic or lumbar vertebra performed under CT guidance or using a fixed C-arm. Methods Consecutive adult patients undergoing PVP of one vertebra under CT-guidance, with optimized protocol and training of physicians, or... View Optimization of image quality and accuracy of low iodine concentration quantification as function of kVp pairs for abdominal imaging using dual-source CT: A phantom study Article * Aug 2021 * Djamel Dabli * Julien Frandon * Aymeric Hamard * [...] * Joël Greffier Purpose To determine the suitable kVp pair for optimal image quality of the virtual monochromatic images (VMIs) and iodine quantification accuracy at low concentration, using a third generation dual-source CT (DSCT). Materials and methods Multi-energy CT phantoms with and without body rings were scanned with a DSCT using four kVp pairs (tube “A”/“... View Impact of four kVp combinations available in a dual‐source CT on the spectral performance of abdominal imaging: A task‐based image quality assessment on phantom data Article Full-text available * Jul 2021 * Joël Greffier * Julien Frandon * Alexandre Sadate * [...] * Djamel Dabli Purpose: To compare the spectral performance of four combinations of kVp available in a third generation dual-source CT (DSCT) on abdominal imaging. Methods: An image-quality phantom was scanned with a DSCT using four kVp pairs (tube "A" voltage/tube "B" voltage): 100/Sn150 kVp, 90/Sn150 kVp, 80/Sn150 kVp, and 70/Sn150 kVp, classic parameters an... View Coronary calcium scoring potential of large field-of-view spectral photon-counting CT: a phantom study Article Full-text available * Jul 2021 * Niels van der Werf * Salim Si-Mohamed * P. A. Rodesch * [...] * Philippe C Douek Objective The aim of the current study was, first, to assess the coronary artery calcium (CAC) scoring potential of spectral photon-counting CT (SPCCT) in comparison with computed tomography (CT) for routine clinical protocols. Second, improved CAC detection and quantification at reduced slice thickness were assessed. Methods Raw data was acquired... View Ultra-low-dose chest CT performance for the detection of viral pneumonia patterns during the COVID-19 outbreak period: a monocentric experience Article Full-text available * Jul 2021 * Joël Greffier * Adel Hoballah * Alexandre Sadate * [...] * Julien Frandon Background: Ultra low dose chest computed tomography (CT) acquisitions have been used for selected emergency room patients with acute dyspnea or minor thoracic trauma. The purpose of this study was to evaluate the diagnostic performance of ultra-low-dose (ULD) chest CT for detecting viral pneumonia patterns compared to standard (STD) dose chest CT... View Comparison of image quality between spectral photon-counting CT and dual-layer CT for the evaluation of lung nodules: a phantom study Article * Jun 2021 * Salim Si-Mohamed * Joël Greffier * Jade Miailhes * [...] * Philippe C Douek Objectives: To evaluate the image quality (IQ) of a spectral photon-counting CT (SPCCT) using filtered back projection (FBP) and hybrid iterative reconstruction (IR) algorithms (iDose4), in comparison with a dual-layer CT (DLCT) system, and to choose the best image quality according to the IR level for SPCCT. Methods: Two phantoms were scanned u... View +2 Impact of additional mattresses in emergency CT on the automated patient centering proposed by a 3D camera: a phantom study Article Full-text available * Jun 2021 * Joël Greffier * Julien Frandon * Hélène de Forges * [...] * Jean Paul Beregi To assess the impact of the use of additional mattresses of different thicknesses on radiation dose and image noise based on the patient centering proposed by a 3D camera for CT. An anthropomorphic phantom was placed on mattresses of different thicknesses (from 3.5 to 13.5 cm) on the table of a CT scanner. The automated patient centering proposed b... View Impact of dose reduction and the use of an advanced model-based iterative reconstruction algorithm on spectral performance of a dual-source CT system: A task-based image quality assessment Article * Apr 2021 * Joël Greffier * Djamel Dabli * Aymeric Hamard * [...] * Julien Frandon Purpose To assess the impact of dose reduction and the use of an advanced modeled iterative reconstruction algorithm (ADMIRE) on image quality in low-energy monochromatic images from a dual-source dual energy computed tomography CT (DSCT) platform. Materials and methods Acquisitions on an image-quality phantom were performed using DSCT equipment w... View Diagnostic performance of ultra-low dose versus standard dose CT for non-traumatic abdominal emergencies Article * Mar 2021 * Basien Nicolan * Joël Greffier * Djamel Dabli * [...] * Julien Frandon Purpose The purpose of this study was to compare the diagnostic performance of ultra-low dose (ULD) to that of standard (STD) computed tomography (CT) for the diagnosis of non-traumatic abdominal emergencies using clinical follow-up as reference standard. Materials and methods All consecutive patients requiring emergency abdomen-pelvic CT examinat... View Spectral photon-counting CT system: Toward improved image quality performance in conventional and spectral CT imaging Article * Feb 2021 * Joël Greffier * Julien Frandon View Skin dose assessment in interventional radiology Article * Jan 2021 * Joël Greffier * Djamel Dabli * Julien Frandon * Jean-Paul Beregi For long, complex procedures in interventional radiology (IR) or in interventional cardiology (IC), the skin dose can be high and induce skin injuries. To improve patient follow-up, it is essential to measure and locate the peak skin dose (PSD). PSD can be measured using dosimeters or computed by skin dose calculation software solutions. Recently,... View Performance of four dual-energy CT platforms for abdominal imaging: a task-based image quality assessment based on phantom data Article * Jan 2021 * Joël Greffier * Salim Si-Mohamed * Djamel Dabli * [...] * Julien Frandon Objectives To compare the spectral performance of dual-energy CT (DECT) platforms using task-based image quality assessment based on phantom data.Materials and methodsTwo CT phantoms were scanned on four DECT platforms: fast kV-switching CT (KVSCT), split filter CT (SFCT), dual-source CT (DSCT), and dual-layer CT (DLCT). Acquisitions on each phanto... View Comparison of acquisition and iterative reconstruction parameters in abdominal computed tomography-guided procedures: A phantom study Article * Jan 2021 * Julien Frandon * Philippe Akessoul * Aymeric Hamard * [...] * Joël Greffier Background: Many computed tomography (CT) navigation systems have been developed to help radiologists improve the accuracy and safety of the procedure. We evaluated the accuracy of one CT computer-assisted guided procedure with different reduction dose protocols. Methods: A total of 128 punctures were randomly made by two operators on two differ... View Comparison of virtual monoenergetic imaging between a rapid kilovoltage switching dual-energy computed tomography with deep-learning and four dual-energy CTs with iterative reconstruction Article * Jan 2021 * Joël Greffier * Salim Si-Mohamed * Boris Guiu * [...] * Djamel Dabli Background: To assess the spectral performance of rapid kV switching dual-energy CT (KVSCT-Canon) equipped with a Deep-Learning spectral reconstruction algorithm on virtual-monoenergetic images at low-energy levels and to compare its performances with four other dual-energy CT (DECT) platforms equipped with iterative reconstruction algorithms. Me... View A national dose analysis of guided tumor destruction: influence of sex, age, localization and destruction technique used Article * Jan 2021 * Matthieu Rojo * Aymeric Hamard * Chris Serrand * [...] * Julien Frandon Background: Percutaneous destructions of tumor lesions by ablation (microwave, radiofrequency or cryoablation) under computed tomography (CT) guidance allow high efficiency with minimally-invasive techniques, and acute needle placement and follow-up during procedure. This study investigated the impact of patient and technique parameters on the dos... View Early results of ultra-low-dose CT-scan for extremity traumas in emergency room Article Full-text available * Jan 2021 * Taki Eddine Addala * Joël Greffier * Aymeric Hamard * [...] * Julien Frandon Background: Ultra-low dose computed tomography (ULD-CT) was shown to be a good alternative to digital radiographs in various locations. This study aimed to assess the diagnostic sensitivity and specificity of ULD-CT versus digital radiographs in patients consulting for extremity traumas in emergency room. Methods: Digital radiography and ULD-CT... View Early Results of Unilateral Prostatic Artery Embolization as a Focal Therapy in Patients with Prostate Cancer under Active Surveillance: Cacer Prostate Embolisation, a Pilot Study Article * Nov 2020 * Julien Frandon * Elsa Bey * Aymeric Hamard * [...] * Stephane Droupy Purpose To evaluate the feasibility of prostatic artery embolization in patients with low-risk prostate cancer (PC) under active surveillance (AS). Methods This monocentric prospective pilot study, running from June 2018 to June 2019, included 10 patients with low-risk PC under AS, median age 72 years (range, 62–77 years), with a unilateral foca... View Ultra-low-dose CT versus radiographs for minor spine and pelvis trauma: a Bayesian analysis of accuracy Article * Oct 2020 * Aymeric Hamard * Joël Greffier * Sophie Bastide * [...] * Julien Frandon Objectives: To compare diagnosis performance and effective dose of ultra-low-dose CT (ULD CT) versus radiographs in suspected spinal or pelvic ring or hip fracture for minor trauma. Methods: ULD CT, in addition to radiography, was prospectively performed in consecutive patients admitted to the emergency department for minor traumas, during worki... View Impact of iterative reconstructions on image quality and detectability of focal liver lesions in low-energy monochromatic images Article * Aug 2020 * Joël Greffier * Julien Frandon * Aymeric Hamard * [...] * Djamel Dabli Purpose To assess the impact of iterative reconstructions on image quality and detectability of focal liver lesions in low-energy monochromatic images from a Fast kV-Switching Dual Energy CT (KVSCT) platform. Methods Acquisitions on an image-quality phantom were performed using a KVSCT for three dose levels (CTDIvol:12.72/10.76/8.79 mGy). Raw data... View Correction to: National dose reference levels in computed tomography–guided interventional procedures—a proposal Article * Jun 2020 * Joël Greffier * Gilbert Ferretti * Julia Rousseau * [...] * Julien Frandon The original version of this article, published on 02 May 2020, unfortunately contained a mistake. View Impact of ultra-low dose CT acquisition on semi-automated RECIST tool in the evaluation of malignant focal liver lesions Article * Jun 2020 * A. Hamard * Julien Frandon * Ahmed Larbi * [...] * Joël Greffier Purpose To compare the evaluation of malignant focal liver lesions (FLLs) using a semi-automated RECIST tool with a standard and an ultra-low dose (ULD) computed tomography (CT) protocol. Materials and methods Thirty-four patients with malignant FLLs underwent two abdominal-pelvic CT examinations one using a standard protocol and one using an ULD... View National dose reference levels in computed tomography–guided interventional procedures—a proposal Article * May 2020 * Joël Greffier * Gilbert Ferretti * Julia Rousseau * [...] * Julien Frandon Objectives To establish national reference levels (RLs) in interventional procedures under CT guidance as required by the 2013/59/Euratom European Directive.Methods Seventeen categories of interventional procedures in thoracic, abdominopelvic, and osteoarticular specialties (percutaneous infiltration, vertebroplasty, biopsy, drainage, tumor destruc... View Clinical evaluation of a dose management system-integrated 3D skin dose map by comparison with radiochromic films Article * Apr 2020 * Joël Greffier * Nicolas Grussenmeyer-Mary * Aymeric Hamard * [...] * Julien Frandon Objectives To validate the performance of an automatic tool to estimate a patient’s peak skin dose (PSD) and a skin dose map from data collected by a radiation dose management system (RDMS) during interventional procedures.Methods In total, 288 eligible consecutive patients undergoing abdominopelvic embolisation or planned coronary angioplasty usin... View Image quality and dose reduction opportunity of deep learning image reconstruction algorithm for CT: a phantom study Article * Feb 2020 * Joël Greffier * Aymeric Hamard * Fabricio Pereira * [...] * Julien Frandon Objectives To assess the impact on image quality and dose reduction of a new deep learning image reconstruction (DLIR) algorithm compared with a hybrid iterative reconstruction (IR) algorithm.Methods Data acquisitions were performed at seven dose levels (CTDIvol : 15/10/7.5/5/2.5/1/0.5 mGy) using a standard phantom designed for image quality assess... View Effect of tin filter-based spectral shaping CT on image quality and radiation dose for routine use on ultralow-dose CT protocols: A phantom study Article * Jan 2020 * Joël Greffier * Fabricio Pereira * A. Hamard * [...] * Julien Frandon Purpose: The purpose of this study was to assess the impact of tin filter (TF) on X-ray beam quality, image quality and radiation dose and its suitability for routine use for chest and lumbar-spine/pelvis-hip ultralow-dose (ULD) CT examination protocols. Materials and methods: The X-ray beam quality was determined by measuring the half-value laye... View CT dose optimization for the detection of pulmonary arteriovenous malformation (PAVM): A phantom study Article * Jan 2020 * Joël Greffier * S. Boccalini * Jean-Paul Beregi * [...] * Salim Si-Mohamed Purpose: To determine the lowest suitable dose level for the detection of pulmonary arteriovenous malformation (PAVM) using a task-based image quality assessment. Material and methods: A phantom was scanned using the standard chest protocol (STD) and 4 other ultra-low dose protocols (ULD) using various kVp. Raw data were reconstructed using level... View 55. Experimental evaluation of a dose management system-inte- grated 3D skin dose map by comparison with XR-RV3 Gaf- chromic Ò films Conference Paper Full-text available * Dec 2019 * Joël Greffier * Nicolas Grussenmeyer-Mary * Julien Frandon * [...] * Jean-Paul Beregi Introduction. To assess the interactive Skin Dose Map_ (SDM) tool integrated to the Dose Management System DoseWatch_(GE Healthcare) with XR-RV3 Gafchromic_ films for implementation in routine practice. Methods. A post case non real time dose estimation software SDM tool was used to calculate PSD and display the patient skin dose distribution. P... View Experimental evaluation of a radiation dose management system-integrated 3D skin dose map by comparison with XR-RV3 Gafchromic® films Article * Sep 2019 * Joël Greffier * Nicolas Grussenmeyer-Mary * Ahmed ben cheikh Larbi * [...] * Julien Frandon Objective To assess the interactive Skin Dose Map® tool (SDMTool) integrated to the radiation dose management system (RDMS) DoseWatch® with Gafchromic® films for implementation in routine practice. Methods A retrospective dose estimation software SDMTool was used to calculate Peak Skin Dose (PSD) and display the patient skin dose distribution. PSD... View Optimization of radiation dose for CT detection of lytic and sclerotic bone lesions: a phantom study Article * Sep 2019 * Joël Greffier * Julien Frandon * Fabricio Pereira * [...] * Patrick Omoumi Objectives To determine the best compromise between low radiation dose and suitable image quality for the detection of lytic and sclerotic bone lesions of the lumbar spine and pelvis. Methods A phantom was scanned using the routine protocol (STD, 13 mGy) and six decreasing dose levels. Raw data were reconstructed using level 3 of iterative reconst... View Noise assessment across two generations of iterative reconstruction algorithms of three manufacturers using bone reconstruction kernel Article * Aug 2019 * Joël Greffier * Julien Frandon * Ahmed Larbi * [...] * Fabricio Pereira Purpose: To compare the noise-magnitude and noise-texture obtained using strong kernel across two generations of iterative reconstruction (IR) algorithms proposed by three manufacturers. Materials and methods: Five computed tomography (CT) systems equipped with two generations of IR algorithm (hybrid/statistical IR [H/SIR] or full/partial model-... View CT iterative reconstruction algorithms: a task-based image quality assessment Article * Jul 2019 * Joël Greffier * Julien Frandon * Ahmed Larbi * [...] * Fabricio Pereira Purpose To assess the dose performance in terms of image quality of filtered back projection (FBP) and two generations of iterative reconstruction (IR) algorithms developed by the most common CT vendors. Materials and methods We used four CT systems equipped with a hybrid/statistical IR (H/SIR) and a full/partial/advanced model-based IR (MBIR) alg... View Radiation Exposure During Transarterial Chemoembolization: Angio-CT Versus Cone-Beam CT Article * Jun 2019 * Lauranne Piron * Julien Le Roy * Christophe Cassinotto * [...] * Boris Guiu Introduction Cone-beam computed tomography (CBCT) has been developed to improve reliability of many interventional radiology (IR) procedures performed with Angio system, such as transarterial chemoembolization (TACE). Angio-CT has emerged as a new imaging technology that combines a CT scanner with an Angio system in the same IR suite. The purpose o... View Minor Blunt Thoracic Trauma in the Emergency Department: Sensitivity and Specificity of Chest Ultralow-Dose Computed Tomography Compared With Conventional Radiography Article Full-text available * Jun 2019 * Francesco Macri * Joël Greffier * Elina Khasanova * [...] * Jean-Paul Beregi Study objective: To evaluate the diagnostic performance of chest ultralow-dose computed tomography (CT) compared with chest radiograph for minor blunt thoracic trauma. Methods: One hundred sixty patients with minor blunt thoracic trauma were evaluated first by chest radiograph and subsequently with a double-acquisition nonenhanced chest CT proto... View Influence of iterative reconstruction and dose levels on metallic artifact reduction: A phantom study within four CT systems Article * May 2019 * Joël Greffier * Ahmed Larbi * Julien Frandon * [...] * Fabricio Pereira Purpose: To compare metallic artifact reduction (MAR) algorithms proposed by four vendors according to the delivered dose and iterative level using a phantom study. Methods: Four CT systems (Revolution GSI®, Ingenuity Elite®, Somatom Edge®, and Aquilion Prime®) equipped with MAR algorithms (Smart MAR®, O-MAR®, iMAR®, and SEMAR®) were compared. A... View Comparison of noise-magnitude and noise-texture across two generations of iterative reconstruction algorithms from three manufacturers Article * May 2019 * Joël Greffier * Ahmed Larbi * Julien Frandon * [...] * Fabricio Pereira Purpose: To compare the noise-magnitude and noise-texture across two generations of iterative reconstruction (IR) algorithms proposed by three manufacturers according to the dose level. Materials and methods: Five computed tomography (CT) systems equipped with two generations of IR algorithms (hybrid/statistical IR [H/SIR] or full/partial model-... View Experimental evaluation of a dose management solution-integrated 3D skin dose map by comparison with XR-RV3 Gafchromic® films in interventional radiology Poster * Mar 2019 * Joël Greffier * Nicolas Grussenmeyer-Mary * Julien Frandon * [...] * Jean-Paul Beregi The purpose of this study is to compare the Peak Skin Dose and the dose map measured with XR-RV3 Gafchromic films and calculated with a Dose Management System-integrated 3D Skin Dose Map (SDM) tool, DoseWatch® (GE Healthcare, Milwaukee, MI). This assessment on phantom is performed on three different interventional radiology systems for 15 different... View Low and ultra-low dose radiation in CT: Opportunities and limitations Article * Feb 2019 * Jean-Paul Beregi * Joël Greffier View Assessment of combined use of ArcCheck ® detector and portal dosimetry for delivery quality assurance of head and neck and prostate volumetric-modulated arc therapy Article Full-text available * Oct 2018 * Gilles Moliner * Lise Sorro * Rodolfe Verstraet * [...] * Joël Greffier Purpose: To assess the efficiency of combined use of ArcCheck® detector (AC) and portal dosimetry (PDIP) for delivery quality assurance of head and neck and prostate volumetric-modulated arc therapy. Materials and methods: Measurement processes were studied with the Gamma index method according to three analysis protocols. The detection sensitiv... View Exposition des chirurgiens et des patients aux rayonnements ionisants pendant les procédures d’ostéosynthèse rachidienne postérieure percutanée : étude prospective de 100 patients Article * Sep 2018 * Pascal Kouyoumdjian * Guillaume Gras-Combe * Michael Grelat * [...] * Nicolas Lonjon View Exposition des chirurgiens et des patients aux rayonnements ionisants pendant les procédures d’ostéosynthèse rachidienne postérieure percutanée : étude prospective de 100 patients Article * Sep 2018 * Pascal Kouyoumdjian * Guillaume Gras-Combe * Mickael Grelat * [...] * Nicolas Lonjon Hypothèse Les fixations percutanées par vis pédiculaire (FPVP) (FPVP) sont de plus en plus pratiquées en chirurgie du rachis, minimisant la morbidité via un moindre délabrement musculaire mais au prix d’un guidage fluoroscopique peropératoire générant une forte exposition aux rayonnements. Peu d’études ont été conduites pour les mesurer précisément... View Correction to: Patient dose reference levels in surgery: a multicenter study Article Full-text available * Aug 2018 * Joël Greffier * Cécile Etard * Olivier Mares * [...] * Ahmed Larbi The original version of this article, published on 01 August 2018, unfortunately contained two mistakes. View Patient dose reference levels in surgery: a multicenter study Article * Aug 2018 * Joël Greffier * Cécile Etard * Olivier Mares * [...] * Ahmed Larbi Objective: To assess diagnostic reference levels (DRLs) in surgery for the most frequent procedures as required by the European Directive 2013/59/Euratom. Methods: A survey was conducted in six centers. Eight orthopedic, urology and gastrointestinal surgical procedures were analyzed. Kerma area product (KAP) and fluoroscopy time (FT) were record... View Surgeon's and patient's radiation exposure during percutaneous thoracolumbar pedicle screw fixation: A prospective multicenter study of 100 cases Article * Jun 2018 * Pascal Kouyoumdjian * Guillaume Gras-Combe * Michael Grelat * [...] * Nicolas Lonjon Hypothesis: Percutaneous pedicle screw fixations (PPSF) are increasingly used in spine surgery, minimizing morbidity through less muscle breakdown but at the cost of intraoperative fluoroscopic guidance that generates high radiation exposure. Few studies have been conducted to measure them accurately. Material and methods: The objective of our s... View Decreased operator X-ray exposure by optimized fluoroscopy during radiofrequency ablation of common atrial flutter Article * May 2018 * A. Zedira * Joël Greffier * X. Brunet * [...] * Mathieu Granier Purpose: To evaluate operator and patient irradiation during radiofrequency ablation (RFA) of common atrial flutter (AF) using three different fluoroscopy settings. Material and method: A total of 38 patients who underwent RFA of AF with three different fluoroscopy settings (low dose, standard dose and collimated field) were included. Twelve pat... View +2 Detection and characterization of focal liver lesions with ultra-low dose computed tomography in neoplastic patients Article Full-text available * Feb 2018 * Ahmed Larbi * C. Orliac * Julien Frandon * [...] * Joël Greffier Purpose: The purpose of this study was to evaluate and compare the diagnostic accuracy of ultra-low dose (ULD) computed tomography (CT) with that of standard dose (STD) CT in the detection and characterization of focal liver lesions in neoplastic patients. Materials and methods: A total of 177 neoplastic patients who underwent two abdominopelvic... View +3 Assessment of patient's peak skin dose during abdominopelvic embolization using radiochromic (Gafchromic) films Article Full-text available * Feb 2018 * Joël Greffier * Jean Goupil * Ahmed Larbi * [...] * Julien Frandon Purpose: To assess the value of the routine use of radiochromic films in abdominopelvic embolization procedures to improve patient follow-up. Methods: A total of 55 patients who underwent transcatheter abdominopelvic embolization were prospectively included. Six types of procedures were evaluated including hepatic chemoembolization (HCE), gonada... View 20. Dose estimation in radiology Article Full-text available * Dec 2017 * Joël Greffier According to the IRSN, medical exposure accounts for more than one third of the average annual exposure of an individual. More than 90% of this is due to radiological acts. According to the decree of 6 December 2011 on training and missions of the medical physicist, one of the main missions of medical physicists is ‘‘the estimation of the dose to t... View 25. Reference levels in interventional radiology: A French retrospective survey on patient doses Article Full-text available * Dec 2017 * Joël Greffier * Emeline Bigand * Cécile Etard * [...] * Jean-Paul Beregi Introduction. A national retrospective survey on patient doses was performed by the French Society of Medical physicists to assess reference levels (RLs) in interventional radiology as required by the European Directive 2013/59/Euratom. Methods. Fifteen interventional procedures in neuroradiology, vascular radiology and osteoarticular procedures we... View Diagnostic performance of a low dose triple rule-out CT angiography using SAFIRE in emergency department Article Full-text available * Oct 2017 * Salim Si-Mohamed * Joël Greffier * X. Bobbia * [...] * Francesco Macri Objectives To compare the diagnostic performance of “triple rule out” CT angiography (TRO-CTA) at 100 kVp using sinogram affirmed iterative reconstruction (SAFIRE) with TRO-CTA at 120 kVp using filtered back projection (FBP) in patients with acute chest pain. Methods Consecutive non-prepared patients from a single radiological emergency departme... View Assessment of peak skin dose in interventional cardiology: A comparison between Gafchromic film and dosimetric software em.dose Article Full-text available * Jun 2017 * Joël Greffier * Claire Van Ngoc Ty * G. Bonniaud * [...] * Fabricio Pereira Objective: To compare the use of a dose mapping software to Gafchromic film measurement for a simplified peak skin dose (PSD) estimation in interventional cardiology procedure. Methods: The study was conducted on a total of 40 cardiac procedures (20 complex coronary angioplasty of chronic total occlusion (CTO) and 20 coronary angiography and cor... View Rapport SFPM n°32 sur les Niveaux de Référence en Radiologie Interventionnelle. Technical Report Full-text available * Jun 2017 * Joël Greffier * Emeline Bigand * Amaury Hornbeck * [...] * Cécile Salvat View +2 Effect of patient size, anatomical location and modulation strength on dose delivered and image-quality on CT examination Article Full-text available * Apr 2017 * Joël Greffier * Ahmed Larbi * Francesco Macri * [...] * Fabricio Pereira To study the effect of patient size, anatomical location and modulation strength (MS) on image-quality and delivered dose of CT scans acquired with automatic-exposure-control system (AEC). Four anthropomorphic phantoms (three paediatric and one thin adult) were studied, and normal and obese adults were simulated by placing bolus plates around the a... View Patient dose in interventional radiology: a multicentre study of the most frequent procedures in France Article Full-text available * Mar 2017 * Cécile Etard * Emeline Bigand * Cécile Salvat * [...] * Joël Greffier ObjectivesA national retrospective survey on patient doses was performed by the French Society of Medical physicists to assess reference levels (RLs) in interventional radiology as required by the European Directive 2013/59/Euratom. Methods Fifteen interventional procedures in neuroradiology, vascular radiology and osteoarticular procedures were an... View 1 2 NETWORK Cited View All * Carlo N. De Cecco * Emory University * Philippe C Douek * Claude Bernard University Lyon 1 * Daniela B Husarik * Kantonsspital St. Gallen * Uwe Joseph Schoepf * Medical University of South Carolina * Dushyant V Sahani * Massachusetts General Hospital Cited By View All * Filippo Cademartiri * IRCCS SYNLAB SDN * Takeshi Nakaura * Seitaro Oda * Kumamoto University * Antonella Meloni * Fondazione Toscana Gabriele Monasterio, Italian National Research Council * Carlo Cavaliere * SDN Istituto di Ricerca Diagnostica e Nucleare Current institution Centre Hospitalier Régional Universitaire de Nîmes * Department of Medical Imaging * Nîmes, France Current position * Medical Physicist, Ph.D HDR MIG NIMES Co-authors Top co-authors * Boris Guiu * St-Eloi University Hospital, Montpellier, FRANCE * Yves Barbotteau * IRIDIS Marseille * Gilles Moliner * Centre Hospitalier Régional Universitaire de Nîmes * Anais Viry * Lausanne University Hospital * F. Snene * Centre Hospitalier Régional Universitaire de Nîmes All co-authors (50) View All Aurelie Vuillod Department * Department of Cardiology Guillaume Cayla Department * Cardiologie CHU Nimes Philippe C Douek Department * Centre de recherche en acquisition et traitement de l'image pour la santé (CREATIS) Isabelle Fitton Department * Service d’Imagerie Julien Frandon Nicolas Lonjon Department * Neurochirurgie Montpellier Bertrand Ledermann Department * Department of cardilogy Jean-Paul Beregi Department * Department of Radiology Nicolas Grussenmeyer-Mary A. Hamard Ahmed ben cheikh Larbi Department * Mechanical Engineering Djamel Dabli Department * Department of Radiology Tarek Kammoun Department * Department of Radiology Cécile Etard Department * UEM - Medical Radiation protection Unit Jean Goupil Department * Department of Radiology Fabricio Pereira Advertisement Join ResearchGate to find the people and research you need to help your work * 25+ million members * 160+ million publication pages * 2.3+ billion citations Join for free Top co-authors Loading... Lab members Loading... Cited Loading... Cited By Loading... Current journal roles Loading... What type of researcher are you? Only verified researchers can join ResearchGate and send messages to other members. 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