A5045304238- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Radiation Therapy and Dosimetry
- Advanced Radiotherapy Techniques
- Cardiac, Anesthesia and Surgical Outcomes
- Radiation Detection and Scintillator Technologies
- Radiation Effects in Electronics
- Cardiac Imaging and Diagnostics
- Hemodynamic Monitoring and Therapy
- Healthcare cost, quality, practices
- Aortic aneurysm repair treatments
- Breast Cancer Treatment Studies
- Particle Detector Development and Performance
- Ultrasound and Hyperthermia Applications
- Radiology practices and education
- Hepatocellular Carcinoma Treatment and Prognosis
- Breast Implant and Reconstruction
- Spinal Fractures and Fixation Techniques
- Photoacoustic and Ultrasonic Imaging
- Digital Radiography and Breast Imaging
- COVID-19 diagnosis using AI
- Acute Myocardial Infarction Research
- COVID-19 and healthcare impacts
- Spine and Intervertebral Disc Pathology
Hôpital Européen Georges-Pompidou
2020-2025
Université Paris Cité
2019-2025
Assistance Publique – Hôpitaux de Paris
2022-2025
Hôpital Européen
2020-2024
Délégation Paris 5
2019
Sorbonne Paris Cité
2019
Frédéric Joliot Institute for Life Sciences
2018
Laboratoire d'études sur les monothéismes
2014-2017
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2010-2012
Institut d'Imagerie Biomédicale
2010-2011
Background There is lack of guidance on specific CT protocols for imaging patients with coronavirus disease 2019 (COVID-19) pneumonia. Purpose To assess international variations in utilization, protocols, and radiation doses COVID-19 Materials Methods In this retrospective data collection study, the International Atomic Energy Agency coordinated a survey between May July 2020 regarding from 62 health care sites 34 countries across five continents examinations performed The questionnaire...
Positron emission tomography (PET) is a promising tool for monitoring the three-dimensional dose distribution in charged particle radiotherapy. PET imaging during or shortly after proton treatment based on detection of annihilation photons following ß+-decay radionuclides resulting from nuclear reactions irradiated tissue. Therapy achieved by comparing measured spatial irradiation-induced ß+-activity with predicted plan. The accuracy calculated depends correctness computational models,...
Aim: The purpose of this study is to compare the dosimetric differences between two dose calculation algorithms-Anisotropic Analytical Algorithm (AAA) and Acuros XB (AXB) - in Stereotactic Body Radiation Therapy (SBRT) for lung cancer using Halcyon TrueBeam radiation therapy (RT) equipment, identify optimal combination treatment. Materials Methods: A Retrospective which recruited 20 patients with peripherally located primary or metastasis upper middle lobes treated SBRT at Kiang Wu Hospital,...
The purpose of this study was to assess the image quality and dose reduction potential ultra-high resolution (UHR) mode compared with standard mode, both available on a commercial photon-counting detector computed tomography (PCCT) scanner. Images were acquired PCCT phantom using UHR modes at three levels (3/6/12 mGy). Raw data reconstructed soft tissue (Br36) bone (Br68) reconstruction kernels 0.4-mm slice thickness. Noise power spectrum (NPS) task-based transfer function (TTF) calculated...
The purpose of this study was to compare the quality low-energy virtual monoenergetic images (VMIs) obtained with three Dual-Energy CT (DECT) platforms according phantom diameter. Three sections Mercury Phantom 4.0 were scanned on two generations split-filter CTs (SFCT-1st and SFCT-2nd) one Dual-source (DSCT). noise power spectrum (NPS), task-based transfer function (TTF), detectability index (d') assessed VMIs from 40 70 keV. highest magnitude values found SFCT-1st higher DSCT than SFCT-2nd...
In this study, the impact of radiochromic films' (XR-RV3) calibration on PSD measurements was investigated under various peak kilovoltage (kVp) and additional filtration conditions. Films were calibrated free-in-air for six beam qualities with Allura Xper FD20 system (Philips). Six curves (CCs) constructed. Each quality characterized in terms mean energy (ME) air, table, table water phantom using Monte Carlo simulations. A cohort 155 patient films from cardiology (37) vascular (118)...
This study aimed to evaluate the impact of three two-dimensional (2D) mammographic acquisition techniques on image quality and radiation dose in presence silicone breast implants (BIs). Then, we propose validate a new International Atomic Energy Agency (IAEA) phantom reproduce these techniques. Images were acquired single Hologic Selenia Dimensions
To compare the quality of low-energy VMIs obtained with three DECT platforms according to phantom diameter. Three sections Mercury Phantom 4.0 were scanned on two generations split-filter CTs (SFCT-1st and SFCT-2nd) one Dual-source CT (DSCT). Noise power spectrum (NPS), task-based transfer function (TTF) detectability index (d’) assessed from 40 70keV. Highest noise magnitude values found SFCT-1st was higher DSCT than SFCT-2nd for 26-cm (10.2±1.3%) 31-cm (7.0±2.5%), opposite 36-cm...
Recently, a second generation of split filter dual-energy CT (SFCT) platform has been developed. The thicknesses the gold and tin filters used to obtain both low- high-energy spectra have changed. These differences in thickness may affect spectral separation between two thus quality images.To compare performance Split-Filter Dual-Energy systems (SFCT-1st SFCT-2nd ) on virtual monoenergetic images (VMIs) iodine map.A Multi-Energy phantom was scanned SFCT with tube voltage 120 kVp for -120...
To define and evaluate a radiation dose optimization process for chest computed tomography (CT) imaging.
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 reconstruction parameters for lumbar spine procedures were used on each device. The tube current set to a dose level of around 27 mGy. A task-based image quality assessment performed by calculating noise power spectrum (NPS) task transfer function (TTF). detectability index (d’) calculated simulated bone lesions. magnitude...
Background Patients can be exposed to high skin doses during complex interventional cardiology (IC) procedures. Purpose To identify which clinical and technical parameters affect patient exposure peak dose (PSD) establish reference levels (DRL) per complexity level in IC Material Methods Validation Estimation of Radiation Dose Interventional Cardiology (VERIDIC) project analyzed prospectively collected data from eight European countries 12 hospitals where percutaneous coronary intervention...
Proton therapy is a conformal method for dose delivery in sensitive regions. Offline PET monitoring has been proposed as proton irradiation produces positron emitters such <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sup> C and xmlns:xlink="http://www.w3.org/1999/xlink">15</sup> O [1]. Generally, the methods consist comparing Monte Carlo simulation of produced during with measurements. Simulations can be performed using FLUKA [2] or...
Proton therapy is mainly used to treat cancer where a conformal dose essential. Methods for monitoring both the spatial distribution and delivered have thus been proposed [1]. irradiation on organic tissue produces positron emitters (mainly <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sup> C xmlns:xlink="http://www.w3.org/1999/xlink">15</sup> O). may be performed using Positron Emission Tomography (PET) acquisition. The methods most often...