Myocardial perfusion was followed up after 500-1000 muCi 201TI-chloride injection at a gamma camera Pho-Gamma HP, Nuclar, Chicago with 4060 channel analyser and the images, according to the programmes of the authors, were processed with a computer type EC 1020. Some of the patients were examined by removing the detector, aiming at magnifying of the image and enhancing the differentiation ability under I cm. In some borderline cases, the patients were examined under physical loading and at rest for the differentiation of the normal from the disperfusion myocardial zones. Ninety patients were examined with myocardial infarction, obs. myocardial infarction, stenocardia and left bundle branch block. New additional data were obtained, in all the patients as: infarction zones, hypoperfusion foci, mosaic image of myocardium, vizualization of microinfarction, etc. The processing of the images of the regional myocardial perfusion with 201TI from gamma camera by computer, is a new, considerably higher stage of radioisotope diagnostics.
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