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Quantification of valvular regurgitation using radioisotopes
1Department of Nuclear Medicine, University of Liège, Hôpital de Bavière, Belgium.
European Heart Journal
|August 1, 1987
Summary
Radionuclide angiography quantifies mitral and aortic regurgitation by comparing left ventricular stroke volumes. This simple, reproducible technique effectively assesses moderate to severe valve regurgitation and its treatment response.
Area of Science:
- Cardiology
- Nuclear Medicine
- Medical Imaging
Background:
- Mitral and aortic regurgitations cause left ventricular volume overload.
- Radionuclide angiography offers advanced cardiac volume measurement.
- Valvular regurgitations and shunts require accurate assessment.
Purpose of the Study:
- To evaluate radionuclide angiography for detecting and quantifying mitral and aortic regurgitations.
- To assess the functional impact of valvular regurgitations.
- To determine the technique's utility in monitoring treatment effects.
Main Methods:
- Utilized radionuclide angiography to measure cardiac volumes, comparing total and effective left ventricular stroke volumes.
- Employed equilibrium measurements in the left anterior oblique position.
- Calculated stroke volume ratio and regurgitant fraction.
Main Results:
- The technique adequately quantifies moderate to severe mitral and aortic regurgitations.
- It allows for follow-up of left ventricular volume and regurgitant fraction.
- Effectiveness in assessing intervention impact was demonstrated.
Conclusions:
- Equilibrium scintigraphic measurement is a valuable technique for assessing valvular regurgitation due to its simplicity and applicability.
- It is suitable for moderate to severe cases but not mild regurgitation.
- Future improvements may come from gated tomographic acquisitions.