Evaluative study between calculated and measured DVHs for advance techniques of radiotherapy for Prostate Cancer Patients | ||||
Journal of Scientific Research in Science | ||||
Article 2, Volume 38, part 1 (Basic Sciences), January 2021, Page 1-18 PDF (754.11 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/jsrs.2021.210652 | ||||
![]() | ||||
Authors | ||||
Ibrahim Ahmed Elhamamsi ![]() | ||||
1Physics department, Faculty of Women for Arts, Science & Education, Ain Shams University, Cairo, Egypt | ||||
2Clinical Oncology and Nuclear Medicine Department, Faculty of Medicine, Al Azhar University, Egypt. | ||||
3Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Egypt | ||||
Abstract | ||||
This study aims to use 3DVH software (Sun Nuclear Corporation, Melbourne, FL, USA) to compare the dose that was predicted by treatment planning system (TPS) with the measured dose obtained by ArcCHECK dosimetric device using two advance treatment techniques: Volumetric Modulated Arc Therapy (VMAT) and Intensity Modulated Radiation Therapy (IMRT). Thirty prostate cancer patients who were treated with VMAT and re- planned with IMRT using Eclipse planning system were studied. The percentage dose differences (%DDs) were calculated using 3DVH software for planning target volume (PTV) and risk organ (OARs). The correlations between %DD and the gamma pass rate (GPR) (3%/3mm, 2%/2mm and 1%/1mm) criterion were examined. Both the DVHs calculated by 3DVH and the one projected by TPS were compared using the different parameters for PTV and OAR. In VMAT technique, the %DD was less than 3% for PTV and 4% for OAR while the IMRT technique recorded %DD less than 2% for PTV and 4% for OAR. 3DVH was somewhat more consistent with the planned VMAT verification data compared to ArcCHECK, with a mean gamma pass rate of 99.34% for the 3%/3 mm criterion Based on our results, VMAT is especially beneficial for prostate most cancers treatment. | ||||
Keywords | ||||
3DVH; QA; ArcCHECK; Gamma Pass Rate | ||||
Statistics Article View: 158 PDF Download: 199 |
||||