Three-dimensional dosimetry in brachytherapy: A MAGAT study.
This study is to evaluate the influence of using different matrix size of smoothing filter for image post-processing and various slice thickness during MR imaging on dose estimation in Ir-192 HDR brachytherapy via normoxic polymer gel dosimeter. Our results show its sensitive nature in gel dosimeter while changing these parameters, among which the combination of 2mm slice thickness of MR images and [5x5] smoothing filter are considered the optimal parameters to provide accurate dose estimations and isodose curves.
Lin
Min-Hsing
MH
Department of Family Medicine and Physical Check-up Center, Tainan Hospital Department of Health, Executive Yuan, Taiwan, ROC.
Huang
Tzung-Chi
TC
Kao
Ming-Jen
MJ
Wu
Jay
J
Chen
Chia-Lin
CL
Wu
Tung-Hsin
TH
D001918:Brachytherapy / Q000592:standards*; D005782:Gels; D021621:Imaging, Three-Dimensional; D007495:Iridium; D008279:Magnetic Resonance Imaging / Q000379:methods; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted
D005782:Gels; D007495:Iridium