Verification of dose delivery for a prostate sIMRT treatment using a SLIC-EPID.
The current work focuses on the verification of transmitted dose maps, measured using a scanning liquid ionization chamber-electronic portal imaging device (SLIC-EPID) for a typical step-and-shoot prostate IMRT treatment using an anthropomorphic phantom at anterior-posterior (A-P), and several non-zero gantry angles. The dose distributions measured using the SLIC-EPID were then compared with those calculated in the modelled EPID for each segment/subfield and also for the corresponding total fields using a gamma function algorithm with a distance to agreement and dose difference criteria of 2.54mm and 3%, respectively.
Mohammadi
Mohammad
M
Department of Medical Physics, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran. Mohammadi@umsha.ac.ir
Bezak
Eva
E
Reich
Paul
P
D001822:Body Burden; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D008297:Male; D011471:Prostatic Neoplasms / Q000532:radiotherapy*; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000295:instrumentation*; D020266:Radiotherapy, Conformal / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014963:X-Ray Intensifying Screens