Treatment planning comparison between dynamic wave arc and volumetric modulated arc therapies for prostate-cancer treatment

The aim of this study was to compare the quality of dynamic wave arc (DWA) and coplanar volumetric modulated arc therapy (co-VMAT) plans for the treatment of localized prostate cancer. The planning target volume (PTV)-rectum, a section of the PTV comprising the PTV minus that of the rectum, received 78 Gy in 39 fractions as the mean dose to the PTV-rectum. The DWA and co-VMAT plans were generated for each patient using the RayStation treatment planning system for the Vero4DRT system. The PTV-rectum dose (D95%: the percent dose irradiating 95% of the volume), homogeneity index (HI), conformity index (CI), as well as doses to the bladder wall, rectum wall (V10 –70 Gy: the percent volume receiving 10–70 Gy), and bilateral femoral heads of the DWA and co-VMAT plans were compared.
Source: Medical Dosimetry - Category: Radiology Authors: Tags: Clinical Radiation Oncology Contribution Source Type: research