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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. |
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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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