title: [Nuclear medical estimation of ejection fraction, cardiac output and time volume-differentials (author's transl)].
abstract: Gated blood pool investigation yield the ejection fraction as ratio of two volumes. To obtain absolut volumina (e.g. output volume in ml) the authors utilize the first transit of the tracer through the heart cava. Radionuclide output of the heart equals input during the first tracer passage, homogeneous infusion of the tracer provided. The resulting calibration factor makes possible the calculation of the stroke volume in the gated bloodpool procedure. Good correlation could be proven in 35 patients (r = 0.86 and 0.9, respectively).
mesh_terms: D002302:Cardiac Output; D002306:Cardiac Volume; D006321:Heart / Q000000981:diagnostic imaging* / Q000502:physiology; D006334:Heart Function Tests / Q000379:methods*; D006339:Heart Rate; D006801:Humans; D011877:Radionuclide Imaging; D013318:Stroke Volume; D013667:Technetium; D013997:Time Factors
chemical_list: D013667:Technetium
vernacular_title: Nuklearmedizinische Bestimmung der Ejektions-fraktion, des Herzminutenvolumens und zeitlichen Volumen-Differentials.