Dosimetric investigation of LDR brachytherapy ¹⁹²Ir wires by Monte Carlo and TPS calculations.
OBJECTIVE
The aim of this study was to investigate the dose rate distribution around (192)Ir wires used as radioactive sources in low-dose-rate brachytherapy applications.


METHODS
Monte Carlo modeling of a 0.3-mm diameter source and its surrounding water medium was performed for five different wire lengths (1-5 cm) using the MCNP software package.


RESULTS
The computed dose rates per unit of air kerma at distances from 0.1 up to 10 cm away from the source were first verified with literature data sets. Then, the simulation results were compared with the calculations from the XiO CMS commercial treatment planning system.


CONCLUSIONS
The study results were found to be in concordance with the treatment planning system calculations except for the shorter wires at close distances.
Department of Physics, Faculty of Arts and Sciences, Harran University, Osmanbey Campus, 63300 Sanliurfa, Turkey. ahmetbozkurt@yahoo.com
Ahmet
A
Bozkurt
Hediye
H
Acun
Gonul
G
Kemikler
D001918:Brachytherapy / Q000295:instrumentation*; D003198:Computer Simulation; D006801:Humans; D007496:Iridium Radioisotopes / Q000627:therapeutic use*; D009010:Monte Carlo Method; D011874:Radiometry / Q000379:methods*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted; D012984:Software
D007496:Iridium Radioisotopes