A Simple Means of Anatomic Correlation of the Photo Dot Scan

Abstract

THE especial usefulness of isotopic brain scanning with gamma emitters stems from its simplicity and high degree of accuracy, which rivals that of the technically more difficult procedures of angiography and air-contrast studies.^{1 , 2} Occasionally, the scan detects a lesion that is not manifested by the other more precise diagnostic studies, and then the scan along with the clinical findings must provide the basis for a therapeutic decision. When surgery is indicated precise anatomic localization is necessary. Superimposition of the scan over the routine radiograph provides a convenient but cumbersome means of anatomically localizing detected lesions. The distortion due to projectional . . .