J Korean Soc Ther Radiol.
1992 Dec;10(2):147-154.
Dose Effect of Tissue Compensator for 6 MV X-Ray
- Affiliations
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- 1Therapeutic Radiology, School of Medicine, Keimyung University, Dongsan Medical Center Taegu, Korea.
Abstract
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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.