Search Results - "Greffier, Joel"

Image quality and dose reduction opportunity of deep learning image reconstruction algorithm for CT: a phantom study by Greffier, Joël, Hamard, Aymeric, Pereira, Fabricio, Barrau, Corinne, Pasquier, Hugo, Beregi, Jean Paul, Frandon, Julien

“…Objectives To assess the impact on image quality and dose reduction of a new deep learning image reconstruction (DLIR) algorithm compared with a hybrid…”
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Spectral CT imaging: Technical principles of dual-energy CT and multi-energy photon-counting CT by Greffier, Joël, Villani, Nicolas, Defez, Didier, Dabli, Djamel, Si-Mohamed, Salim

“…•Spectral computed tomography (CT) uses the energy-dependent information present in CT images.•The use of spectral computed tomography (CT) overcomes the…”
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Patient dose in interventional radiology: a multicentre study of the most frequent procedures in France by Etard, Cécile, Bigand, Emeline, Salvat, Cécile, Vidal, Vincent, Beregi, Jean Paul, Hornbeck, Amaury, Greffier, Joël

“…Objectives A national retrospective survey on patient doses was performed by the French Society of Medical physicists to assess reference levels (RLs) in…”
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Comparison of two versions of a deep learning image reconstruction algorithm on CT image quality and dose reduction: A phantom study by Greffier, Joël, Dabli, Djamel, Frandon, Julien, Hamard, Aymeric, Belaouni, Asmaa, Akessoul, Philippe, Fuamba, Yannick, Le Roy, Julien, Guiu, Boris, Beregi, Jean‐Paul

“…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…”
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Impact of an artificial intelligence deep‐learning reconstruction algorithm for CT on image quality and potential dose reduction: A phantom study by Greffier, Joël, Si‐Mohamed, Salim, Frandon, Julien, Loisy, Maeliss, Oliveira, Fabien, Beregi, Jean Paul, Dabli, Djamel

“…Background Recently, computed tomography (CT) manufacturers have developed deep‐learning‐based reconstruction algorithms to compensate for the limitations of…”
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Improved image quality and dose reduction in abdominal CT with deep-learning reconstruction algorithm: a phantom study by Greffier, Joël, Durand, Quentin, Frandon, Julien, Si-Mohamed, Salim, Loisy, Maeliss, de Oliveira, Fabien, Beregi, Jean-Paul, Dabli, Djamel

“…Objectives To assess the impact of a new artificial intelligence deep-learning reconstruction (Precise Image; AI-DLR) algorithm on image quality against a…”
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Improving image quality of the middle ear with ultra-high-resolution CT coupled with deep-learning image reconstruction algorithm by Greffier, Joël, Soyer, Philippe, Dabli, Djamel

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Phantom task‐based image quality assessment of three generations of rapid kV‐switching dual‐energy CT systems on virtual monoenergetic images by Greffier, Joël, Viry, Anaïs, Barbotteau, Yves, Frandon, Julien, Loisy, Maeliss, Oliveira, Fabien, Beregi, Jean Paul, Dabli, Djamel

“…Purpose To compare the spectral performance of three rapid kV switching dual‐energy CT (DECT) systems on virtual monoenergetic images (VMIs) at low‐energy…”
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iQMetrix-CT: New software for task-based image quality assessment of phantom CT images by Greffier, Joel, Barbotteau, Yves, Gardavaud, François

“…•New iQMetrix-CT software was developed by a working group from the SFPM•This software calculates three advanced metrics, which are noise power spectrum,…”
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Ultra-low-dose CT versus radiographs for minor spine and pelvis trauma: a Bayesian analysis of accuracy by Hamard, Aymeric, Greffier, Joel, Bastide, Sophie, Larbi, Ahmed, Addala, Takieddine, Sadate, Alexandre, Beregi, Jean-Paul, Frandon, Julien

“…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…”
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Spectral performance of two split‐filter dual‐energy CT systems: A phantom study by Greffier, Joël, Van Ngoc Ty, Claire, Fitton, Isabelle, Frandon, Julien, Beregi, Jean‐Paul, Dabli, Djamel

“…Abstract Background Recently, a second generation of split filter dual‐energy CT (SFCT) platform has been developed. The thicknesses of the gold and tin…”
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Comparison of two deep learning image reconstruction algorithms in chest CT images: A task-based image quality assessment on phantom data by Greffier, Joël, Frandon, Julien, Si-Mohamed, Salim, Dabli, Djamel, Hamard, Aymeric, Belaouni, Asmaa, Akessoul, Philippe, Besse, Francis, Guiu, Boris, Beregi, Jean-Paul

“…•Using TrueFidelityTM algorithm, spatial resolution is independent of dose and contrast and image texture modification is limited.•Using AiCE algorithm,…”
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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 by Greffier, Joël, Dabli, Djamel, Hamard, Aymeric, Akessoul, Philippe, Belaouni, Asmaa, Beregi, Jean-Paul, Frandon, Julien

“…•The use of low energy levels on virtual monoenergetic images (VMI) generated by dual-source CT improves the low contrast resolution but alters noise texture…”
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Clinical evaluation of a dose management system-integrated 3D skin dose map by comparison with radiochromic films by Greffier, Joël, Grussenmeyer-Mary, Nicolas, Hamard, Aymeric, Goupil, Jean, Miller, David E., Cayla, Guillaume, Ledermann, Bertrand, Demattei, Christophe, Beregi, Jean Paul, Frandon, Julien

“…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…”
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Comparison of the spectral performance between two dual-source CT systems on low-energy virtual monoenergetic images: A phantom study by Greffier, Joël, Faby, Sebastian, Pastor, Maxime, Frandon, Julien, Erath, Julien, Beregi, Jean-Paul, Dabli, Djamel

“…•With new DSCT, noise magnitude was slightly higher compared to the previous DSCT.•With new DSCT, detectability slightly lower compared to the previous…”
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Comparison of low-energy virtual monoenergetic images between photon-counting CT and energy-integrating detectors CT: A phantom study by Greffier, Joël, Faby, Sebastian, Pastor, Maxime, Frandon, Julien, Erath, Julien, Beregi, Jean Paul, Dabli, Djamel

“…•Image quality and radiation dose reduction obtained with a photon-counting CT system were compared with those of an energy-integrating dual-source CT system…”
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Comparison of image quality between spectral photon-counting CT and dual-layer CT for the evaluation of lung nodules: a phantom study by Si-Mohamed, Salim A., Greffier, Joel, Miailhes, Jade, Boccalini, Sara, Rodesch, Pierre-Antoine, Vuillod, Aurélie, van der Werf, Niels, Dabli, Djamel, Racine, Damien, Rotzinger, David, Becce, Fabio, Yagil, Yoad, Coulon, Philippe, Vlassenbroek, Alain, Boussel, Loic, Beregi, Jean-Paul, Douek, Philippe

“…Objectives To evaluate the image quality (IQ) of a spectral photon-counting CT (SPCCT) using filtered back projection (FBP) and hybrid iterative reconstruction…”
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Contribution of an artificial intelligence deep-learning reconstruction algorithm for dose optimization in lumbar spine CT examination: A phantom study by Greffier, Joël, Frandon, Julien, Durand, Quentin, Kammoun, Tarek, Loisy, Maeliss, Beregi, Jean-Paul, Dabli, Djamel

“…•The impact of a new artificial intelligence deep-learning reconstruction algorithm on image quality and dose for lumbar spine CT was compared to a hybrid…”
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Value of Ultra-low-dose Chest CT with Iterative Reconstruction for Selected Emergency Room Patients with Acute Dyspnea by Macri, Francesco, Greffier, Joel, Pereira, Fabricio, Rosa, Alina Chica, Khasanova, Elina, Claret, Pierre-Geraut, Larbi, Ahmed, Gualdi, Gianfranco, Beregi, Jean Paul

“…Highlights • Selected dyspnoeic patients can be investigated with ultra-low-dose CT (ULDCT). • The level of diagnostic confidence is similar between ULDCT and…”
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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 by Dabli, Djamel, Frandon, Julien, Hamard, Aymeric, Belaouni, Asmaa, Addala, Takieddine, Beregi, Jean-Paul, Greffier, Joël

“…•The pair of kVp had an impact on the spectral performance of abdominal imaging.•70/Sn150 kVp pair provides the best image quality at low iodine…”
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