Title: The application of dual-jourse computed tomotraphy to eraluate the global left ventricular function in aortic valve replacement
Abstract: Objective:To evaluate diagnostic accuracy of dual source computed tomography(DSCT) for evaluation of left ventricular(LV) function quantification in aortic valve replacement,with magnetic resonance imaging(MRI) as the reference standard.Methods:We evaluated a total of 21 patients(9 men,12 women;mean age years 56.7) who underwent both DSCT and MRI.Patients with aortic valve disease who were scheduled to undergo aortic valve replacement(AVR).Left ventricular ejection fraction,end-diastolic volume,endsystolic volume,stroke volume weremanually assessed for each patient by two blinded readers.Intraobserver variability was calculated using paired-samples t-test and interobserver variability was calculated using analysis of variance of repeated measure.Their agreement was measured using the intraclass correlation coefficient(ICC). Results:There was no significant difference among the measurements for DSCT and MRI of the ventricular function parameters.A strong correlation between DSCT and MRI(r=0.85~0.94) was found for all parameters.However,EDV,ESV,SVand EF were overestimated with DSCT compared to ICC in MRI(EDV,ESV,SV,EF) was 0.8~1,in DSCT(EDV,ESV,SV,EF) was 0.6~0.75,respectively.Conclusion:A strong correlation between DSCT and MRI is found for all parameters ECG-gated DSCT angiography can evaluate the coronary tree,whereas the analysis of left ventricular parameters provides additional information of cardiac function without further radiation exposure or scan time.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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