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Clinical application of ejection fraction by gated MRI
1Department of Radiology, Veterans General Hospital-Taichung, Taiwan, R.O.C.
Zhonghua Yi Xue Za Zhi = Chinese Medical Journal; Free China Ed
|September 1, 1992
Summary
Magnetic resonance imaging (MRI) provides accurate left ventricular ejection fraction (LVEF) measurements. This study found MRI
Area of Science:
- Cardiovascular Imaging
- Medical Physics
Background:
- Left ventricular ejection fraction (LVEF) is a critical indicator of cardiac function.
- Accurate LVEF assessment is essential for diagnosing and managing heart conditions.
Purpose of the Study:
- To assess the clinical accuracy of LVEF calculated using magnetic resonance imaging (MRI).
- To compare MRI-derived LVEF with established methods like angiocardiography and nuclear medicine.
Main Methods:
- Twenty-five adult patients underwent EKG-gated MRI within days of coronary angiography.
- Spin-echo images were acquired in end-systole and end-diastole.
- Area-length method was used for volume and LVEF calculations.
Main Results:
- MRI-derived LVEF showed reasonable correlation with angiocardiography (r=0.753) and nuclear medicine (r=0.783).
- Statistical analysis indicated significant agreement between the methods (p=0.009 and p'=0.002).
Conclusions:
- Electrocardiogram-gated MRI is a clinically accurate method for calculating left ventricular ejection fraction.
- MRI offers a reliable alternative for LVEF assessment compared to traditional techniques.