A result analysis of gamma pass rates for IMRT verification for pinnacle planning system.
- Author:
Jianying ZHANG
1
;
Tao JIANG
Author Information
- Publication Type:Journal Article
- MeSH: Algorithms; Gamma Rays; Radiotherapy Dosage; Radiotherapy Planning, Computer-Assisted; methods; Radiotherapy, Conformal; methods; Software
- From: Chinese Journal of Medical Instrumentation 2011;35(6):422-424
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVEThe study was to explore effort of planning parameters by analyzing the result of Gamma pass rates for IMRT verification for Pinnacle planning system.
METHODS5 Head Neck IMRT plans finished by Xio planning system were imported into Pinnacle planning system. Different algorithms and calculation grids were used to calculate the dose distributions for 3 orthogonal planes at isocenter which were exported in 3 kind grids. Mapcheck software was used to calculate the Gamma pass rate using the plane dose distributions from Xio system as the reference ones simulating the measurements.
RESULTThe difference of Gamma pass rates for 3 kinds of algorithm and calculation grids were of statistical significance.
CONCLUSIONThe parameters in Pinnacle planning system may have influence on Gamma pass rates. It needs further discussion to directly use the Gamma pass rates in documents during the establishing of IMRT QA protocol.
