title: Quantitative investigation of the x-ray absorption coefficient in computed tomography. An approach to numerical diagnosis.
abstract: 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 + 2sigma 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%.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001927:Brain Diseases / Q000000981:diagnostic imaging*; D002648:Child; D002675:Child, Preschool; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D013223:Statistics as Topic; D014057:Tomography, X-Ray Computed