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CT机是使用X射线结合计算机技术的设备,如何使其应用过程更为合理,是摆在我们面前的又一个重要问题。 一、X射线危害 据联合国原子辐射效应科学委员会最新报告,医疗照射已成为公众所受电离辐射照射的最大人工来源。由卫生部组织开展的“‘九五’全国医疗照射水平调查研究”显示:我国仅各种X射线诊断检查,1998年就已多达2.45亿人次。少“吃”一次射线,就能降低一分诱发癌症的风险。不合理的医疗照射会给人体带来确定性效应和随机性效应。如由辐射诱发的放射性白内障等一类放
CT machine is the use of X-ray technology combined with computer equipment, how to make its application process more reasonable, is placed in front of us another important issue. I. X-RAY HAZARD According to the latest report of the United Nations Scientific Committee on the Effects of Atomic Radiation, medical exposure has become the largest source of artificial exposure to ionizing radiation to the public. The “Nineth Five-Year Plan of National Medical Exposure Survey” organized by the Ministry of Health shows that only a total of 245 million person-times in 1998 were available for various kinds of X-ray diagnostic tests in China. Less “eat” a ray, you can reduce the risk of cancer by one point. Irrational medical exposure will give the human body a deterministic and random effects. Such as radiation-induced radiation cataract and so on