Dosimetric evaluation of the compass program for patient dose analysis in IMRT delivery quality assurance.

ABSTRACT: A practical method was designed to verify the accuracy of dose distributions calculated using Compass, which can reconstruct the dose distribution inside a patient's body during intensity-modulated radiation therapy (IMRT). Twelve virtual IMRT treatment plans were developed using an ArcCHECK diode detector array, and then the recalculated and reconstructed doses in Compass were compared with the actual measurements to assess the dosimetric accuracy. Based on the results of gamma evaluation for the 12 plans, Compass achieved average pass rates higher than 98%, which confirmed proper dosimetric accuracy in the IMRT quality assurance process. The validity of Compass for clinical applications was also confirmed through an additional comparison with the results calculated using 3DVH, another do

SUBMITTER: Song JY 

PROVIDER: S-EPMC6301628 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature