Analysis of clinical patient-specific pre-treatment quality assurance with the new helical tomotherapy platform, following the AAPM TG-218 report.
IMRT QA
Pre-treatment quality assurance
Quality assurance
TomoTherapy
Journal
Radiation oncology (London, England)
ISSN: 1748-717X
Titre abrégé: Radiat Oncol
Pays: England
ID NLM: 101265111
Informations de publication
Date de publication:
22 Nov 2021
22 Nov 2021
Historique:
received:
22
09
2021
accepted:
11
11
2021
entrez:
23
11
2021
pubmed:
24
11
2021
medline:
8
2
2022
Statut:
epublish
Résumé
This study presents patient-specific quality assurance (QA) results from the first 395 clinical cases for the new helical TomoTherapy® platform (Radixact) coupled with dedicated Precision TPS. The passing rate of the Gamma Index (GP%) of 395 helical QA of patient-specific tomotherapy, acquired with ArcCHECK, is presented, analysed and correlated to various parameters of the plan. Following TG-218 recommendations, the clinic specific action limit (AL The mean values (± 1 standard deviation) of GP% (3%/2 mm) (both global and local normalization) are: 97.6% and 90.9%, respectively. The proposed AL The phantom measurements closely match the planned dose distributions, demonstrating that the calculation accuracy of the new Precision TPS and the delivery accuracy of the Radixact unit are adequate, with respect to international guidelines and reports. Furthermore, a first correlation with the planning parameters was made. Action and tolerance limits have been set for the new Radixact Linac.
Identifiants
pubmed: 34809645
doi: 10.1186/s13014-021-01952-w
pii: 10.1186/s13014-021-01952-w
pmc: PMC8607724
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
226Informations de copyright
© 2021. The Author(s).
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