The purpose of
this study is to investigate the comparison of 3DVH software and
two-dimensional array systems (MatriXX, ArcCHECK, and portal dosimetry system)
on pretreatment verification for volumetricmodulated arc therapy.
Dosimetric
measurements were performed using the verification for 20 treatment plans.
Measured dosimetric differences were evaluated by gamma pass rate and
percentage dose difference. Dose-volume histograms (DVHs)
calculated by the treatment planning system were also compared with those
predicted by the 3DVH software.
The mean gamma
pass rates were more than 95% for the 3%/3 mm criterion, except for 3D
evaluation using the 3DVH (3DVH (3D)) software in prostate cancer cases.
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