University of Khartoum

Doismetry Studies during Breast Cancer Radiation TreatmentDoismetry Studies during Breast Cancer Radiation TreatmentDoismetry Studies during Breast Cancer Radiation Treatment

Doismetry Studies during Breast Cancer Radiation TreatmentDoismetry Studies during Breast Cancer Radiation TreatmentDoismetry Studies during Breast Cancer Radiation Treatment

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Title: Doismetry Studies during Breast Cancer Radiation TreatmentDoismetry Studies during Breast Cancer Radiation TreatmentDoismetry Studies during Breast Cancer Radiation Treatment
Author: Ahmed, Maha Omer Mohamed
Abstract: Previous studies indicated that breast cancer is wildly spread especially in women as compared to men. It is increased after an age of thirty five years in women so it is important to study the effect of exposure to the radiation on the intact breast during the treatment of the breast suffering from cancer. In this work the scattered doses for the intact breast during the treatment of the breast suffering from cancer were measured and also the probability of inducing cancer in it is also discussed. The study was performed for a group of patients composed of twenty five females. Also the backscattered doses to the intact breast were measured for thirteen female patients. During the treatment using gamma rays from 60Co source the two tangential fields (lateral and medial) were selected for the measurements. The results of exposure to gamma radiation for the lateral and medial fields showed that the mean scattered and backscattered doses to the intact breast were (241.26cGy,47.49cGy) and ( 371.6cGy,385.4cGy), respectively. Beside that the somatic risk of induced cancer to the intact breast was found to be (6.1x10-3, 1.2x10-3) and (9.29x10-3, 9.63x10-3), respectively. From the results obtained it was concluded that the intact breast received small amounts of radiation doses which may lead to breast cancer for the healthy breast. The recommendations from the present study are to take care of radiation protection to the patient, and also to take care of the patient treatment conditions like temperature, pressure and humidity during the radiation exposure. Also it is recommended that further measurements of scattered and backscattered doses be carried out to the other fields like the posterior and anterior, and to other organs that are expected to be more sensitive to the radiation like ovaries, thyroid and kidneys.
URI: http://khartoumspace.uofk.edu/handle/123456789/13304
Date: 2015-06-16


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