• Augmenter la taille
  • Taille par défaut
  • Diminuer la taille

Publications

Envoyer Imprimer PDF
AUTEURS ››Benhalouche S, Bert J, Autret A, Visvikis D, Pradier O, Boussion N
Titre ››Berder_2013_Abstract_Saadia_Benhalouche.docImaging and radiation therapy: GATE Monte Carlo simulation of a MV-CBCT flat panel with specific application in head and neck cancer.
DANS ››"The future of radiation oncology" workshop
PUBLIE EN ››2013
TYPE PUBLI ››Conférence
LANGUE ››GB
RESUME ››Actually, the improvement in conformal radiotherapy techniques enables to achieve dose gradients around the target which allows the delivery of higher doses to a tumor volume while maintaining the sparing of surrounding normal tissue [1]. To ensure the proper delivery of the prescribed dose during treatment planning, it is essential to reposition the patient before each treatment session, to ensure this task, currently, the most common method for patient position verification during fractionated radiation therapy is the use of electronic portal imaging devices (EPIDs). There are few approaches available to CT imaging in the treatment position. One such approach combines the capabilities of a linear accelerator LINAC with a diagnostic CT scanner [2]. We previously proposed a complete model of a medical LINAC (Siemens ONCOR 160 MLC) with the GATE Monte Carlo platform for intensity modulated radiation therapy (IMRT) applications [3]. The objective of the present study was to extend this model by incorporating the imaging part of the LINAC, which consists of a flat panel detector (Perkin Elmer XRD 1640) with amorphous silicon detectors and a sensible area of 41×41 cm². The couple LINAC/detector obtained with GATE was then used to perform a Megavolt Cone Beam CT (MV CBCT) reconstruction. The portal imaging system was evaluated by imaging a series of 2D projections of a patient head-and-neck CT with GATE. The final 3D MV CBCT was reconstructed on GPU using the FDK algorithm and compared with the ground truth showing close agreement. Future work will consist to use this modeling to perform further clinical study within the EPID-based on transit dosimetry context.

INSERM :
Benhalouche S, Bert J, Autret A, Visvikis D, Pradier O, Boussion N:Imaging and radiation therapy: GATE Monte Carlo simulation of a MV-CBCT flat panel with specific application in head and neck cancer... "The future of radiation oncology" workshop, 2013,,0-0,C,M,GB.]


BibTex :
@inproceedings{LaTIM-1758
author = {Benhalouche S AND Bert J AND Autret A AND Visvikis D AND Pradier O AND Boussion N}
title = {Imaging and radiation therapy: GATE Monte Carlo simulation of a MV-CBCT flat panel with specific application in head and neck cancer.}
booktitle = {"The future of radiation oncology" workshop}
year = {2013}
}

Mise à jour le Mercredi, 04 Février 2009 12:36