Purpose:Left ventricular function (LVF) represents the most important prognostic factor in short and long term in most cardiac pathologies. For decades, Echocardiography only has been used for LVF assessment although impaired by errors that stemmed mainly from foreshortened views and inaccurate geometric modeling. The advent of MDCT-CA allows an accurate evaluation of the coronaries but also, due to the synchronization to the cardiac cycle, a valid study regarding the ventricular function.The purpose of the present study was to compare global LV systolic function assessment by MDCT with US in a routine cardiology practice setting. Methods and Materials:116 consecutive patients studied with MDCT-CA and 2D echo were considered. The following parameters were compared between the two techniques by two blinded operators: septum thickness, inferior wall thickness, ascending aorta diameter, end-systolic and end-diastolic volume and diameters, ejection fraction, stroke volume, cardiac output, cardiac mass. Results:Overall interobserver agreement was high (r=0.782). A good correlation was found in the comparison between MDCT-CA and 2D-ECHO considering septum thickness, (r=0.470, p=0.001), ascending aorta diameter (r=0.777, p<0.001), end diastolic diameters (r=0.375, p=0.054) and end-systolic diameters (r=0.703, p<0.001) and cardiac mass (r=0.419, p=0.006); a low correlation was found considering inferior wall thickness, stroke volume and cardiac output. As a global indicator of the LVF, Ejection Fraction excellently correlates between the 2 techniques (r=0.626, p<0.001) Conclusions:MDCT-CA obtains left ventricular functions parameters similar to those retrieved with 2D echo, thus adding important informations beyond the coronaries which are useful for the diagnostic work-up of patients with coronary and cardiac diseases.
MDCT-CA vs 2D echocardiography: function beyond the coronaries
MALAGO', Roberto;POZZI MUCELLI, Roberto
2011-01-01
Abstract
Purpose:Left ventricular function (LVF) represents the most important prognostic factor in short and long term in most cardiac pathologies. For decades, Echocardiography only has been used for LVF assessment although impaired by errors that stemmed mainly from foreshortened views and inaccurate geometric modeling. The advent of MDCT-CA allows an accurate evaluation of the coronaries but also, due to the synchronization to the cardiac cycle, a valid study regarding the ventricular function.The purpose of the present study was to compare global LV systolic function assessment by MDCT with US in a routine cardiology practice setting. Methods and Materials:116 consecutive patients studied with MDCT-CA and 2D echo were considered. The following parameters were compared between the two techniques by two blinded operators: septum thickness, inferior wall thickness, ascending aorta diameter, end-systolic and end-diastolic volume and diameters, ejection fraction, stroke volume, cardiac output, cardiac mass. Results:Overall interobserver agreement was high (r=0.782). A good correlation was found in the comparison between MDCT-CA and 2D-ECHO considering septum thickness, (r=0.470, p=0.001), ascending aorta diameter (r=0.777, p<0.001), end diastolic diameters (r=0.375, p=0.054) and end-systolic diameters (r=0.703, p<0.001) and cardiac mass (r=0.419, p=0.006); a low correlation was found considering inferior wall thickness, stroke volume and cardiac output. As a global indicator of the LVF, Ejection Fraction excellently correlates between the 2 techniques (r=0.626, p<0.001) Conclusions:MDCT-CA obtains left ventricular functions parameters similar to those retrieved with 2D echo, thus adding important informations beyond the coronaries which are useful for the diagnostic work-up of patients with coronary and cardiac diseases.
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