dose response of Gafchromic films EBT to high energy x-ray and electron beams

• Main Authors: Ching-Yu Chang, 張瀞予
• Other Authors: Paosh Chang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/48464172292446086778

碩士 === 高雄醫學大學 === 醫學放射技術學研究所碩士班 === 95 === The object of this experiment is to confer the dose response of high energy x-ray, electron beams, single or fraction irradiation, and try to find its correlation. Different energy of dose of x-ray and electron beams exposure dividedly collected single and fraction irradiation was made by Varian 2100C accelerator when using the ISP Gafchromic film (RCF) EBT. All the RCF film was read and scanned by digital densitometer after 24 hours. The optic density (OD) value was collected and analyzed. It was using different dose to measure the OD value by single and fraction irradiation. When random access dose (50-800 cGy) was verified, the reproducibility was acceptable. The result shows that RCF film is out of energy dependence, no apparent difference between single and fraction irradiation, and it can be re-usable by the data analysis.