Quantitative Investigation of the X-Ray Absorption Coefficient in Computed Tomography
From printout data of 50 normal and 50 abnormal scans of a brain slice picking up the basal ganglia, the numerical values of SD and DC were obtained and those values lying inside M + 2σ were arbitrarily regarded as normal. By these criteria two cases (4%) were diagnosed as false negative and three cases (6%) as false positive, with a misdiagnosis rate of 5%.
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