Author(s):
1. Tatjana Ignjić, IMC Banja Luka - Affidea, Republic of Srpska, Bosnia and Herzegovina
2. Goran Kolarević, Republic of Srpska, Bosnia and Herzegovina
3. Petar Janjic, IMC Banja Luka, Republic of Srpska, Bosnia and Herzegovina
4. Bojan Pavičar, Affidea, Internacionalni medicinski centar, Centar za Radioterapiju, Dvanaest beba bb, Banja Luka, Pr, Republic of Srpska, Bosnia and Herzegovina

Abstract:
52 prostate cancer plans have been prepared. CTV is defined as the prostate bed, prostate or prostate + seminal vesicles. Delineated organs at risk (OAR) are bladder, rectum, femoral heads, penilebulb, colon and smallbowel. Each plan used for training model was planned manually by experienced physicist with one full arc (30 degrees collimator), in Eclipse treatment planning system (TPS), version 15.6 . Treatment energy was 6X. These plans were used to train the KBP model using Varian RapidPlan. Goodness of fit statistics is checked for each structure in training log. Outliers were identified and their removal from the model was considered. According to training log data, coefficient of determination for each OAR is higher than 0,7 (R^2>0,7). Chi square is close to 1, except for penile bulb (χ^2≈1,2). Also, other statistical parameters are within the thresholds.

Key words:
knowledge based planning,RapidPlan,prostate,VMAT

Date of abstract submission:
31.07.2024.

Conference:
Contemporary Materials 2024 - Savremeni Materijali