Brachytherapy Treatment Planning and Linac for Dose Measurement of Bladder and Rectum in Cervical Cancer Patients

Cervical cancer was one of the most dangerous cancer suffered by women all over the world. One treatment method for cervical cancer was using radiotherapy. Cervical cancer can be treated using 2 types of radiotherapy such as brachytherapy and linac. The organ at Risk (OAR) were healthy organs which the most adjacent to the cervix namely bladder and rectum. The total dose received by OAR must be below dose tolerance. The purpose of this study was to determine the total dose received by bladder and rectum from a combination of brachytherapy and linac treatment (B-L) compared with combination linac and linac treatment (L-L). Prescribe dose for booster brachytherapy was 3x7 Gy and for booster, linac was 10x2 Gy. Evaluating the dose was by analyzing Dose Volume Histogram (DVH) bladder and rectum in 2cc volume (D2cc). The average total dose received by bladder from B-L was ($66.44\pm 0.05$) Gy and from L-L was ($66.55\pm 0.02$) Gy; the average total dose received by rectum from B-L was ($66.02\pm 0.05$) Gy and from L-L was ($67.45\pm 0.02$) Gy) respectively. Statistical analysis was carried out by Independent T-test, it is convinced that there was no significant difference ($\mathbf{p} > 0.05$) in total dose received by bladder from both B-L and L-L treatment, while there was a significant difference ($\mathbf{p} < 0.05$) in total dose received by rectum from both treatments. The total dose received by bladder and rectum from both B-L and L-L treatment remained in safety zone as those were still below the dose tolerance based on GEC-ESTRO recommendations (D2cc bladder<90 Gy and D2cc rectum<75 Gy).