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KMID : 1151820200140060741
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Journal of the Korean Society of Radiology
2020 Volume.14 No. 6 p.741 ~ p.746
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A Study on Dose Sensitivity according to Rice Cultivar in Extremities Radiation Therapy with Rice Bolus
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Seo Jeong-Min
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Abstract
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To investigate the radiation dose sensitivity in extremity radiatioin therapy depending on rice cultivar which have different size and shape of grains, plan results are compared that used rice bolus Korean and Thai rice. Phantoms that are each no bolus, Korean rice bolus, Thai rice bolus were used and prescribed 100 cGy to isocenter and checked the point dose of 12 points of interest of each phantoms. The meane dose are 103.57±1.98 cGy in Thai rice bolus using, 104.27±2.12 cGy in Korean rice bolus and 104.99±6.40 cGy in phantom without bolus. Dose distribution of Thai and Korean rice bolus differed significantly in Wilcoxon s Signed Rank test (p=.011). It has been confirmed that that the bolus using Thai rice, which has a small grain size, shows a more even dose distribution.
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KEYWORD
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Rice Bolus, Water Bolus, Soft Tissue Sarcoma, Radiation Therapy
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