Effect of collimator angle on HyperArc stereotactic radiosurgery planning for single and multiple brain metastases.
Brain
HyperArc
Metastases
SRS
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:
30
05
2019
revised:
07
07
2019
accepted:
09
07
2019
pubmed:
6
8
2019
medline:
15
12
2020
entrez:
6
8
2019
Statut:
ppublish
Résumé
We assessed the effect of collimator angle on the dosimetric parameters for targets and organs at risk (OARs) for collimator-optimized HA (CO-HA) and non-CO-HA (nCO-HA) plans. The nCO-HA and CO-HA plans were retrospectively generated for 26 patients (1 to 8 brain metastases). The dosimetric parameters for planning target volume (homogeneity index [HI]; conformity index [CI]; gradient index [GI]) and for OARs were compared. The modulation complexity score for volumetric modulated arc therapy (MCSV) and monitor units (MUs) were calculated. Doses were measured using the electronic portal imaging device and compared with the expected doses. Dosimetric parameters of the HI, CI, and GI for single (n = 12) and multiple (n = 14) metastases cases were comparable (p > 0.05). For multiple metastases cases, the CO-HA plan provided lower V
Identifiants
pubmed: 31378401
pii: S0958-3947(19)30080-9
doi: 10.1016/j.meddos.2019.07.004
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
85-91Informations de copyright
Copyright © 2019 American Association of Medical Dosimetrists. Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors are involved in an on-going collaboration with Varian Medical Systems and financial support was provided.