Author/Authors :
Baradaran-Ghahfarokhi، Milad نويسنده Medical Radiation Department, School of Mechanical Engineering, Shiraz University, Shiraz, Iran &lMedical Physics and Medical Engineering Department , , Mosleh-Shirazi، Mohammad Amin نويسنده , , Faghihi، Reza نويسنده Medical Radiation Department, School of Mechanical Engineering, Shiraz University, Shiraz, Iran , , Bagheri، Mohammad Hadi نويسنده Medical Imaging Research Center and Department of Radiology, Shiraz University of Medical Sciences, Shiraz, Iran , , Hadad، Kamal نويسنده Medical Radiation Department, School of Mechanical Engineering, Shiraz University, Shiraz, Iran , , Alavian-Ghavanini، Ali نويسنده Mechanical Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran , , Siavashpour، Zahra نويسنده Mechanical Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran , , Kasayi، Hamed نويسنده Medical Radiation Engineering Department, School of Engineering, Shahid Beheshti University, Tehran, Iran ,
Abstract :
Background: Limited studies are available on the calculation of radiation exposure
and its associated risks for people in contact with patients who have been treated with
permanent prostate brachytherapy. In this study the changes in the radiation exposure
were calculated in different stages of the bladder fullness in prostate seed brachytherapy.
Methods:Magnetic resonance images of three patients with full and empty bladders
and different prostate sizes (32-71 mL; mean 54.6 mL) were used for Monte-Carlo dose
calculations. Dose rate to skin for each patient was calculated using MCNP4c, MCNPX.
Results: There were no significant differences between dose distribution in the skin
relative to the changes in the prostate position due to bladder filling (P=0.05).
Conclusion: Our results showed a negligible change in radiation exposure around
the patient due to prostate displacement after bladder filling.
