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Determination of left ventricular ejection fraction using ultrafast computed tomography.
American Heart Journal
|August 1, 1986
Summary
Ultrafast CT accurately measures left ventricular ejection fraction in adults with heart disease. This non-invasive method shows excellent correlation with traditional ventriculography, offering a simpler diagnostic approach.
Area of Science:
- Cardiovascular Imaging
- Diagnostic Technology
Background:
- Left ventricular ejection fraction (LVEF) is a critical measure of cardiac function.
- Accurate LVEF assessment is vital for managing patients with congenital or acquired heart disease.
Purpose of the Study:
- To evaluate the efficacy of ultrafast computed tomography (CT) for measuring LVEF.
- To compare LVEF measurements obtained by ultrafast CT with those from cardiac catheterization (ventriculography).
Main Methods:
- Sixteen adult patients with heart disease underwent ultrafast CT scanning of the left ventricle.
- Contrast enhancement (Renografin-76) was used, with scanning timed for maximal left ventricular opacification.
- LVEF was calculated by measuring the change in left ventricular area from diastole to systole in a single mid-ventricular slice.
Main Results:
- The mean LVEF measured by ultrafast CT was 58.1 +/- 15.1%.
- LVEF measured by ventriculography was 59.6 +/- 12.3%.
- A strong correlation (r = 0.91, p < 0.001) was observed between LVEF by CT and ventriculography.
Conclusions:
- Ultrafast CT provides an accurate method for assessing left ventricular ejection fraction.
- The simple methodology of ultrafast CT makes it a valuable tool for cardiac diagnostics.