Comparison Of Left Ventricular Ejection Fraction By Single Photon Computed Tomographic Myocardial Perfusion Imaging Versus Coronary Computed Tomography Angiography
ARCHIVES OF MEDICAL SCIENCE(2009)
Abstract
Introduction: Measurement of left ventricular (LV) ejection fraction by coronary computed tomography angiography (CTA) vs. single photon computed tomographic myocardial perfusion imaging (MPI) needs to be investigated.Material and methods: Myocardial perfusion imaging and CTA were performed in 292 patients because of chest pain or dyspnea. The patients included 178 men and 114 women, mean age 66 +/- 11 years.Results: The mean LV ejection fraction was 61 +/- 12% for the MPI tests and 65 +/- 11% for CTA (p <0.001). The LV ejection fraction was >= 50% in 250 of 292 patients (86%) with MPI testing and in 266 of 292 patients (91%) with CTA (p < 0.05). The LV ejection fraction was 36-49% in 31 of 292 patients (11%) with MPI testing and in 22 of 292 patients (8%) with CTA (p not significant). The LV ejection fraction was <= 35% in 11 of 292 patients (4%) with MPI testing and in 4 of 292 patients (1%) with CTA (p not significant). Pearson correlation coefficient was R = 0.67, p < 0.001.Conclusions: The resting LV ejection fraction is significantly higher in patients measured by CTA than in patients measured by MPI testing when both tests are performed in the same patients.
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Key words
left ventricular ejection fraction, myocardial perfusion imaging, coronary computed tomography angiography
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