Evaluation of left ventricular function using volumetric computed tomography in the clinical setting

Archivos de cardiología de México
Erasmo de la Peña-AlmaguerSu Min Chang

Abstract

To correlate the left ventricular parameters obtained with 64-slice Volumetric Computed Tomography (VCT) with those obtained with the reference standard, cardiovascular magnetic resonance (CMR) imaging. VCT and a 3.0T MRI scanner were used. Results from both studies were independently evaluated by two cardiologists. A linear correlation and a paired Student's t test were used to analyze the data with a P<0.05 being considered significant. Thirty consecutive patients were evaluated with VCT and CMR. The left ventricular indices for CMR and VCT were, respectively, mass 86.4±25.8 vs. 82.7±27.6g (P=0.31); ESV 45.5±27.8 vs. 48.7±40.4ml (P=.405); EDV 101.3±32.7 vs. 105.1±44.0ml (P=0.475); SV 55.9±16.1 vs. 56.8±15.6ml (P=0.713); LVEF 57.5±13.2% vs. 56.9±12.4% (P=0.630). No differences in intraobserver variability for both methods were found, CT r=0.96, r(2)=0.92 P<0.0001 and MR r=0.96 r(2)=0.93 P<0.0001. There was no significant statistical difference in the presence of artifacts. There is a close correlation between CMRI and VCT in the evaluation of LV function. VCT is as useful as 3T CMR, and could be incorporated as another resource for evaluating LV function.

References

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