Sparing healthy lung by focusing the radiation beam flow onto the emphysematous regions in the treatment of lung cancer.

Détails

ID Serval
serval:BIB_CD6976D82574
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Sparing healthy lung by focusing the radiation beam flow onto the emphysematous regions in the treatment of lung cancer.
Périodique
Journal of medical imaging and radiation oncology
Auteur(s)
Jumeau R., Peguret N., de Bari B., Moeckli R., Soares-Rodrigues J.L., Durham A.D., Hojnowski S., Bourhis J., Ozsahin M., Beigelman-Aubry C.
ISSN
1754-9485 (Electronic)
ISSN-L
1754-9477
Statut éditorial
Publié
Date de publication
04/2017
Peer-reviewed
Oui
Volume
61
Numéro
2
Pages
252-257
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Currently, routine radiotherapy (RT) planning for locally advanced lung cancer (LC) does not take into consideration the functional state of the lung. The goal of this study was to determine if it is technically feasible to integrate the sites of pulmonary emphysema (PE) into the RT planning process.
Ten patients with LC and PE treated with helical Tomotherapy© were retrospectively included. After extraction by Myrian© software based on diagnostic CT (DCT), the PE data were transferred to the treatment planning system (TPS). PE-optimized plans were performed for patients with significant PE, where the dose was focused onto the PE. We compared the PE-optimized RT plans to the initial RT plans.
The median dose to the planning target volume (PTV) was 52 Gy (range, 36-66) in fractions of 2-3 Gy. The median PE volume was 220 cm(3) (range: 12-1394), and six patients were eligible for a PE-optimized RT plan. Considering the lung without PE, the V20 and V30 variations were not significant (P > 0.05), the V5 decreased from 50% to 44% after re-planning (P < 0.05). The mean PTV D98 was 50 Gy versus 48 Gy (P < 0.05).
Focusing the RT beam flow on the PE structure rather than the healthy lung appears feasible, and may be a promising technique to help preserve pulmonary function and minimize RT-related pulmonary toxicity.

Mots-clé
Oncology, Radiology Nuclear Medicine and imaging
Pubmed
Web of science
Open Access
Oui
Création de la notice
27/01/2017 8:53
Dernière modification de la notice
20/08/2019 15:48
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