Assessment of global and regional left ventricular function in XXXX using ultrafast computed tomography.

@entity1 @entity851 @entity583 @entity910 @entity2845 @entity5048 @entity741 @entity1162
Contrast-enhanced ultrafast computed tomography (CT) of the left ventricle was done in the @entity1162 and @entity851 within one day of cardiac catheterization in 14 males with @entity741 and a mean age of 58 years. Imaging was R wave-triggered at 58-msec intervals (13/level). Left ventriculography was performed in 30 degrees right anterior oblique (RAO) and 60 degrees left anterior oblique (LAO) caudal 12 degrees. CT left ventricular ejection fraction was measured using a modified Simpson's reconstruction of end-systolic and end-diastolic slices. Catheterization left ventricular ejection fraction was measured by area-length method. Six left ventricular segments (septal, apex, anterior, lateral, inferior, and posterior) were scored by different paired observers as follows: dyskinesis (-1), akinesis (0), moderate-severe hypokinesis (1), mild hypokinesis (2), and normal (3). Correlations of left ventricular ejection fraction for catheterization vs. long-axis CT and short-axis CT were r = .83 and r = .86, respectively. Seven of eight @entity1 with transmural @entity583 were identified on CT by @entity2845 / @entity910 segments. Eighty-four segments were scored. There was agreement (normal vs. abnormal) in 76 (90%). CT detected 47 normal segments vs. 51 by catheterization (92%), 11 @entity2845 / @entity910 segments (92%), and 14 @entity5048 segments vs. 21 (67%). Wall motion scores between CT and catheterization differed by greater than 1 in 6 of 84 segments (7%). Therefore, ultrafast CT can accurately assess global and regional left ventricular function.
