The dosimetric differences in calculating lung SBRT plans on different image data sets: Comparison of the free breathing scan to both the average intensity projection scan and to the sum of calculations on each respiratory phase of the 4DCT scan.
Average intensity projection
Gated radiotherapy
Lung SBRT
Journal
Medical dosimetry : official journal of the American Association of Medical Dosimetrists
ISSN: 1873-4022
Titre abrégé: Med Dosim
Pays: United States
ID NLM: 8908862
Informations de publication
Date de publication:
Historique:
received:
02
05
2018
accepted:
22
06
2018
pubmed:
12
8
2018
medline:
11
2
2020
entrez:
12
8
2018
Statut:
ppublish
Résumé
The purpose of this study is to evaluate the dosimetric differences to the lung internal target volume (ITV) in stereotactic body radiation therapy (SBRT) when calculated on the free breathing (FB) scan in comparison to calculations on the average intensity projection (AIP) scan as well as the sum of dose calculated on each of the treated respiratory phases. The clinical treatment plan data for 16 SBRT lung patients were retrospectively chosen for this study, 5 of which were 30% to 70% respiratory phase gated. All patients had ITV contours and fixed monitor units from the treatment approved plan copied over to each scan on which calculations were to be made. The results of this study yielded 6 out of 16 patients with greater than or equal to 2% difference in ITV maximum dose (D
Identifiants
pubmed: 30097226
pii: S0958-3947(18)30083-9
doi: 10.1016/j.meddos.2018.06.003
pii:
doi:
Types de publication
Comparative Study
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
291-299Informations de copyright
Copyright © 2018 American Association of Medical Dosimetrists. Published by Elsevier Inc. All rights reserved.