Diagnostic value of computer-assisted quantitative radioisotope angiocardiography

The cardiac cavities and large vessels were studied by radioisotope angiocardiography with 99mTc-labelled albumin, using a gamma-camera linked to Med-II, with subsequent digital scanning and analysis by coloured video unit (VDP2) of the areas of iso-activity. The results are illustrated of 8 cases selected from the aggregate case histories of 78 patients (1 normal, 4 congenital heart disease, 2 rheumatic, 1 cor pulmonale chronicum). The direct observation of the course of the bolus and the activity/time curves in areas of interest in the cardiac cavities and the lungs, together with the representation of the areas of iso-activity, were useful for diagnosis and physiopathological evaluation of the heart conditions in the patients.