RT - Journal Article T1 - Measurement of the Absorbed Dose by Bladder and Rectum in the Radiation Therapy of Prostate Cancer by Thermoluminescent Dosimetry Method JF - RJMS YR - 2009 JO - RJMS VO - 16 IS - 0 UR - http://rjms.iums.ac.ir/article-1-1262-en.html SP - 0 EP - 0 K1 - Radiation therapy K1 - Prostate cancer K1 - Thermoluminescent dosimetry K1 - Absorbed dose of bladder and rectum AB - Background and Aim: Increased mortality rate�due to prostate cancer shows the growth of this disease.Prostate cancer is the second most widespread malignancy after lung cancer in men.It is important to use new methods in the radiation therapy of prostate cancer that are associated with lower exposure of the normal tissues. Nowadays, in most of the radiotherapy centers in our country, the Co-60 Unit with 2-dimensional treatment planning system is used for radiotherapy of prostate cancer. Therefore, it is essential to evaluate and verify the absorbed dose in the�critical organs such as bladder and rectum to prevent the side effects.In this study, the absorbed dose by these organs was measured in the process of radiotherapy of prostate cancer. Materials and Methods: In this experimental study the received dose by rectum and bladder, in the 2-dimensional treatment planning for radiotherapy of prostate cancer, was measured on tissue-equivalent and anthropomorphic phantom using Thermoluminescent dosimeters (TLD-100). The results were compared with the calculated values in the treatment planning software by t-test statistical method. One-sample Kolmogorov-Smirnov was also used for data analysis. SPSS V.15 was used for data evluation.Results: The measured values of the absorbed dose by bladder and rectum were 236.8±14.9 cGy and 257.3±17.5 cGy, respectively. Results showed the measured absorbed doses in the phantom were significantly higher than estimated values (bladder: 162.4±2.2 cGy and rectum: 158.9±2.4 cGy)than from the treatment planning software (p LA eng UL http://rjms.iums.ac.ir/article-1-1262-en.html M3 ER -