Anisotropic Bladder Planning Target Volume in Bladder Radiation Therapy.
Aged
Anisotropy
Cone-Beam Computed Tomography
/ methods
Female
Follow-Up Studies
Humans
Image Processing, Computer-Assisted
/ methods
Male
Movement
Organs at Risk
/ diagnostic imaging
Prognosis
Radiotherapy Dosage
Radiotherapy Planning, Computer-Assisted
/ methods
Radiotherapy, Image-Guided
/ methods
Radiotherapy, Intensity-Modulated
/ methods
Retrospective Studies
Urinary Bladder
/ diagnostic imaging
Urinary Bladder Neoplasms
/ diagnostic imaging
Journal
Practical radiation oncology
ISSN: 1879-8519
Titre abrégé: Pract Radiat Oncol
Pays: United States
ID NLM: 101558279
Informations de publication
Date de publication:
Jan 2019
Jan 2019
Historique:
received:
01
05
2018
revised:
09
07
2018
accepted:
28
07
2018
pubmed:
11
8
2018
medline:
7
2
2019
entrez:
11
8
2018
Statut:
ppublish
Résumé
This study aimed to investigate 3 planning target volume (PTV) margin expansions and determine the most appropriate volume to be used in bladder preservation therapy when using daily cone beam computed tomography (CBCT). We aimed to establish whether a smaller PTV expansion is feasible without risking geographical miss. The study included patients with bladder cancer who were treated with a hypofractionated course of radiation therapy delivered with intensity modulated radiation therapy. The clinical target volume (CTV) was the whole empty bladder, and the PTV consisted of a 1.5-cm margin around the bladder (PTV For the purpose of this study, we considered an arbitrary 5 cm The anisotropic PTV expansion of 1.5 cm superiorly and anteriorly and 1 cm in all other directions around the bladder (CTV) provides a safe PTV approach when daily CBCT imaging is used to localize an empty bladder.
Identifiants
pubmed: 30096379
pii: S1879-8500(18)30244-3
doi: 10.1016/j.prro.2018.07.006
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
24-28Informations de copyright
Copyright © 2018 American Society for Radiation Oncology. Published by Elsevier Inc. All rights reserved.