中国医疗设备2011，Vol.26Issue(5)：63-68,6.DOI:10.3969/j.issn.1674-1633.2011.05.017
MOSFET用作临床X射线剂量测量的研究
MOSFET Used for Clinical X-ray Doses Measured Exploration
陈智维 1姚升宇 1张铁宁 1胡喆恺 1朱振华1
作者信息
- 1. 上海交通大学附属第一人民医院,肿瘤科,上海200080
- 折叠
摘要
Abstract
Objective In this study,we discussed the feasibility of fabricating a practical X-ray dose detector accord with clinical practice by MOSFET which were sensitive to X radiation.Methods ①Built the MOSFET working circuit,namely, by confirming the Drain Voltage-VDS, and the Drain Resistance DR,and measuring the voltage VDR on the DR to make sure the MOSFET's sensitivity to X-ray. ② Chose different types of MOSFET in market and irradiating on them in standard condition and measuring the VDR , to make sure whether all the MOSFET have the same radiation effects. ③With the same X-ray exposure,compare the VDR measured in MOSFET and the dose measured by ionization chamber and find out their functional relationship.④Determining the MOSFET's durability by large exposure. Results The MOSFET sold in market that have same radiation effects of X-ray; the measured VDR and the measured dose was well linear correlation; the MOSFET can afford 1000 cGy X-ray exposure. Conclusion The selected MOSFET can fully used to measure the relative dose of X-ray.关键词
场效应晶体管/X射线/电离室/剂量监测/探测器Key words
MOSFET/ X-ray/ ionization chamber/ dose monitoring and confirmation/ detector分类
信息技术与安全科学引用本文复制引用
陈智维,姚升宇,张铁宁,胡喆恺,朱振华..MOSFET用作临床X射线剂量测量的研究[J].中国医疗设备,2011,26(5):63-68,6.
