CARDIAC OUTPUT MEASURED BY ECHOCARDIOGRAPHY AND CARDIAC-GATED COMPUTED TOMOGRAPHY COMPARED TO THERMODILUTION

摘要

The accurate measurement of stroke volume and cardiac output (CO) has important applications in both clinical and research arenas. Invasively measured CO by thermodilution (TD) remains the gold standard method. To date, there are very few comparativestudies evaluating echocardiographic CO in dogs using noninvasive imaging modalities. There are no direct comparisons between noninvasive CO estimation using 64-slice multidetector computed tomography (MDCT) and TD in dogs. The aim of this study was to evaluate the accuracy of CO estimation by noninvasive methods (MDCT, 1-, 2-, and 3-dimensional echocardiography) compared to invasively measured CO obtained by TD.