[Semiquantitative assessment of myocardial scintigrams using 201Tl]

A program for an automated semiquantitative evaluation of myocardial scintigrams with 201Tl was proposed. Altogether 11 healthy subjects and 34 patients with acute myocardial infarction were examined. The patients have shown a significant decrease (p less than 0.01) in 201Tl accumulation in some segments of the myocardium as compared to the indices of healthy subjects irrespective of myocardial infarction site. The threshold values of reduced indicator accumulation have been deduced for the front straight and front left oblique 45 degrees projections. The proposed program provides for a sufficient accuracy and a good reproducibility of results.