Author/Authors :
Rafiepour, Payam Department of Nuclear Engineering and Physics - Amirkabir University of Technology, Tehran, Iran , Sheibani, Shahab Nuclear Science Research School - Nuclear Science and Technology Research Institute NSTRI, Tehran, Iran , Rezaey Uchbelagh, Daryiush Department of Nuclear Engineering and Physics - Amirkabir University of Technology, Tehran, Iran , Poorbaygi, Hossein Nuclear Science Research School - Nuclear Science and Technology Research Institute NSTRI, Tehran, Iran
Abstract :
Utilizing radioactive stents is a usual method for treatment of advanced esophageal cancer. It is necessary to investigate the dose distribution of radioactive esophageal stents before the clinical use. This study presents a dosimetric comparison between three radioactive esophageal stents: I-125 seed-loaded stent, iodine-eluting stent and double-layered iodine-eluting stent. Depth-dose and angular dose distributions were carried out using Geant4 toolkit. Moreover, the effect of interval distance between two adjacent seeds on the dose distribution was investigated. Esophageal stents loaded with I-125 seeds seems to be better than iodine-eluting stents, with the distance less than 15 mm between two adjacent seeds.
Keywords :
Advanced esophageal cancer , Radioactive stent , Brachytherapy , Dosimetry Geant
