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Angiology
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Determinants of Left Ventricular Ejection Fraction by Ultrafast Computed Tomography

Robert M. MacMillan

Department of Cardiology, Deborah Heart and Lung Center, Affiliate of the University of Medicine and Dentistry of New Jersey, Browns Mills, NJ

Michael R. Rees

Department of Cardiology, Deborah Heart and Lung Center, Affiliate of the University of Medicine and Dentistry of New Jersey, Browns Mills, NJ

Twenty-seven patients had left ventricular ejection fraction (LVEF) mea sured by catheterization, single-plane angiography, and ultrafast computed to mography (cine CT). Twelve patients (mean age sixty-two years) had LVEF measured by use of the cine CT long-axis view LAV), and 15 patients (mean age fifty-eight years) had LVEF measured by use of the cine CT transaxial view (TAV). Cine CT LVEF was measured by means of two methods of edge detection (M1 and M2). A significant correlation was found between single-plane angiogra phy and cine CT LAV LVEF (M1, r=.96; M2, r=.93). A lesser correlation was found for catheterization vs TAV cine CT LVEF (M1, r=.77; M2, r=.81). There was no significant difference between the two methods of edge detection for determining LVEF (M1 vs M2: LAV, r=.98; TAV, r=.94); however, there was significant variability in cavity volumes. Therefore, the LAV is superior to the TAV for measurement of LVEF by cine CT; however, different methods of edge detection, though affecting volumes, may not affect LVEF.

Angiology, Vol. 39, No. 3, 203-210 (1988)
DOI: 10.1177/000331978803900301
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