Brain Scanning with the Anger Multiplane Tomographic Scanner as a Second Examination

Abstract

One hundred and one patients (43 abnormal, 58 normal) were reexamined with a commercial prototype of the Anger multiplane tomographic scanner after brain scintigraphy. The studies were interpreted independently by 4 observers of varying experience. Observer performance, in terms of ROC [receiver operating characteristics] curves, was substantially better when interpreting the tomographic brain scans and camera scintigrams together or the tomographic scans alone than when interpreting the camera images alone. Reexamination with the scanner increases the accuracy of brain scintigraphy (observer performance) in patients in which there is difficulty distinguishing intracranial [neoplastic] lesions from superficial foci of activity by camera scintigraphy alone.