Combined first-pass-/equilibrium radionuclide ventriculography for non-invasive evaluation of aortic valve incompetence
Creators
- 1. Frankfurt Univ. (Germany, F.R.). Abt. fuer Kardiologie
- 2. Frankfurt Univ. (Germany, F.R.). Abt. fuer Allgemeine Nuklearmedizin
Description
In 15 patients with pure aortic valve incompetence and 5 patients with normal valvular function we determined cardiac output by first-pass-radionuclide ventriculography. In addition, left ventricular stroke volume was evaluated by equilibrium radionuclide ventriculography. The difference between those two volumes in relation to left ventricular stroke volume is the regurgitant fraction. Stroke volume index was calculated as the ratio of enddiastolic-endsystolic count differences of left and right ventricle. Patients with aortic insufficiency demonstrated a regurgitant fraction between 20 and 88%, whilst controls never exceeded 10% (on average -2%). Sensitivity therefore was 100%. In contrast, 2 of 15 patients with aortic valve incompetence showed a stroke volume index within normal range (sensitivity 87%). Regurgitant fraction correlated well with aortographically determined severity of valvular incompetence (r=0.94). We conclude that combined first-pass-/ equilibrium radionuclide ventriculography is highly sensitive quantitative method for evaluation of aortic insufficiency. (orig.)
Abstract (German)
Bei 15 Patienten mit Aorteninsuffizienz und 5 Kontrollpatienten wurde mittels First-Pass-Radionuklid-Ventrikulographie das effektive Kreislaufvolumen und, nach Aequilibrierung, das Schlagvolumen des linken Ventrikels bestimmt. Die Differenz, bezogen auf das Schlagvolumen des linken Ventrikels, ergab die Regurgitationsfraktion. Es zeigte sich ein enger Zusammenhang zwischen der angiographisch beurteilten Schwere und der Regurgitationsfraktion (r=0,94). Waehrend die Regurgitationsfraktion bei den Kontrollpatienten immer unter 10% lag, wiesen Patienten mit Aorteninsuffizienz Werte zwischen 20 und 88% auf. Das Verfahren ist sensitiver (100%) als die Bestimmung des Links-rechts-Quotienten der Zaehlratendifferenzen zwischen enddiastolischem und endsystolischem Volumen (in unserem Patientengut 87%). (orig.)Additional details
Additional titles
- Original title (German)
- Kombinierte First-Pass-/Aequilibrium-Radionuklid-Ventrikulographie zur nichtinvasiven Beurteilung der Schwere einer Aorteninsuffizienz
Publishing Information
- Journal Title
- Z. Kardiol.
- Journal Volume
- 71
- Journal Issue
- 10
- Series
- CODEN: ZKRDA.;Z. Kardiol.
- Journal Page Range
- 661-664
- ISSN
- 0300-5860
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 14761669
- Subject category
- S62: RADIOLOGY AND NUCLEAR MEDICINE;
- Descriptors DEI
- BIOLOGICAL FUNCTIONS; BLOOD CIRCULATION; CARDIOVASCULAR DISEASES; DIAGNOSIS; DYNAMIC FUNCTION STUDIES; HEART; IMAGES; ISOMERIC NUCLEI; PATIENTS; SCINTISCANNING; TECHNETIUM 99; VOLUME
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BODY; CARDIOVASCULAR SYSTEM; COUNTING TECHNIQUES; DIAGNOSTIC TECHNIQUES; DISEASES; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ORGANS; RADIOISOTOPE SCANNING; RADIOISOTOPES; TECHNETIUM ISOTOPES; YEARS LIVING RADIOISOTOPES