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J Korean Soc Ther Radiol > Volume 10(2); 1992 > Article
Journal of the Korean Society for Therapeutic Radiology 1992;10(2): 147-154.
Dose Effect of Tissue Compensator for 6 MV X-Ray
Ho Jun Lee, Tae Jin Choi, Ok Bae Kim
Therapeutic Radiology, School of Medicine, Keimyung University, Dongsan Medical Center Taegu, Korea.
ABSTRACT
It is ideal thing to compensate tissue deficit without skin contamination in curvatured irradiation field of high energy Photon beam. The 3-dimensional compensating technique utilizing tissue equivalent materials to ensure an adequate dose distribution and skin sparing effect was described. This compensator was made of paraffin(70%) and stearin wax (30%) compound. The parameters for evaluation of the effect on skin dose in application of compensator were considered in the size of the field, the thickness of the compensator and the source-to-axis distance. The results are as follows; the skin doses were not changed even though application of the compensator, but depended on the field size and the source-to-axis distance, and the skin doses were only slightly changed within 1% relative errors as increasing the thickness of the compensator in these experiments.
Key Words: 3-dimensional compensator, Tissue equivalent material, Skin dose
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