[Quantitative radiocardiography in the differential diagnosis and follow-up of cardiac disease (author's transl)].

Gated blood pool studies have been performed in about 400 patients, evaluating the regional motility and, by Fourier analysis, the following functional parameters: ejection fraction, peak ejection rate and its time, peak filling rate and its time. Wih the calibration procedure used during the first passage, we measured also the endsystolic and endiastolic volume of the left ventricle and the cardiac outpout. The changes of the different parameters caused by various diseases of the heart are discussed. It can be shown tha the measured values allow important conclusions to be made concerning the differential diagnosis. The examinations before and after surgery facilitate evaluation of therapeutic results.