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Dosimetry and Risk Analyses in Diagnostic Radiology: Computerized Tomography

机译：诊断放射学的剂量学和风险分析：计算机断层扫描

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The use of ionizing radiation for medical purposes is increasing every year. A very popular method recently added to diagnostic x-ray procedures is computerized tomography (CT), a radiological imaging method with high accuracy for the determination of the spatial distribution of x-ray attenuation in the region examined. The asymmetric motion of the x-ray source (translation and rotation) in CT necessitates the use of rather different exposure measurement techniques than those used for conventional diagnostic x-ray sources. Patient skin dose varies considerably from region to region during a scan due to the motion of an x-ray source. The average skin dose to the patient is generally used in evaluating exposure to the patient. Risk factors developed by the BEIR committee can be used to estimate the risk to the population due to the exposure incurred through medical radiography. In this paper, these risk factors are employed to obtain an estimate of risk due to radiation exposure from CT. (ERA citation 06:001388)

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