Comparison of doses calculated by the Monte Carlo method and measured by LiF TLD in the buildup region for a 60Co photon beam.
This work studied the percent depth doses of (60)Co photon beams in the buildup region of a plastic phantom by LiF TLD measurements and by Monte Carlo calculations. An agreement within +/-1.5% was found between PDDs measured by TLD and calculated by the Monte Carlo method with the TLD in a plastic phantom. The dose in the plastic phantom was scored in voxels, with thickness scaled by physical and electron density. PDDs calculated by electron density scaling showed a better match with PDD(TLD)(MC); the difference is within +/-1.5% in the buildup region for square and rectangular field sizes.
Department of Oncology and Nuclear Medicine, University Hospital Sestre milosrdnice, Zagreb, Croatia. mbudanec@kbsm.hr
M
M
Budanec
Z
Z
Knezević
T
T
Bokulić
I
I
Mrcela
M
M
Vrtar
B
B
Vekić
Z
Z
Kusić
D003037:Cobalt Radioisotopes / Q000032:analysis*; D003198:Computer Simulation; D015233:Models, Statistical; D009010:Monte Carlo Method; D017785:Photons; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation / Q000379:methods*
D003037:Cobalt Radioisotopes