Title :

Zero echo time MRI- only treatment planning for radiation therapy of brain tumors after resection

Author(s) :

Boydev, C. [Auteur correspondant]
Demol, B. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Pasquier, David [Auteur]
Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189 [CRIStAL]
Saint-Jalmes, Hervé [Auteur]
Laboratoire Traitement du Signal et de l'Image [LTSI]
Delpon, G. [Auteur]
Institut de Cancérologie de l'Ouest [Angers/Nantes] [UNICANCER/ICO]
Reynaert, N. [Auteur]

Journal title :

Physica Medica

Pages :

332-338

Publisher :

Elsevier

Publication date :

2017

ISSN :

1120-1797

English keyword(s) :

Head cancer
MRI-only treatment planning
ZTE sequence
Pseudo-CT
Atlas-based method

HAL domain(s) :

Sciences du Vivant [q-bio]/Ingénierie biomédicale

English abstract : [en]

Using magnetic resonance imaging (MRI) as the sole imaging modality for patient modeling in radiation therapy (RT) is a challenging task due to the need to derive electron density information from MRI and construct a ...
Show more >Using magnetic resonance imaging (MRI) as the sole imaging modality for patient modeling in radiation therapy (RT) is a challenging task due to the need to derive electron density information from MRI and construct a so-called pseudo-computed tomography (pCT) image. We have previously published a new method to derive pCT images from head T1-weighted (T1-w) MR images using a single-atlas propagation scheme followed by a post hoc correction of the mapped CT numbers using local intensity information. The purpose of this study was to investigate the performance of our method with head zero echo time (ZTE) MR images. To evaluate results, the mean absolute error in bins of 20 HU was calculated with respect to the true planning CT scan of the patient. We demonstrated that applying our method using ZTE MR images instead of T1-w improved the correctness of the pCT in case of bone resection surgery prior to RT (that is, an example of large anatomical difference between the atlas and the patient). (C) 2017 Published by Elsevier Ltd on behalf of Associazione Italiana di Fisica Medica.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL