Simultaneous contrast imaging of the left ventricle by two-dimensional echocardiography and standard ventriculography.
Simultaneous contrast two-dimensional echocardiograms and contrast ventriculograms were analyzed for 19 cardiac cycles in 6 patients. Ventriculographic volume was underestimated by 10 +/- 4.5% (p less than .001) by the contrast echocardiograms, despite good correlation (r = 0.88). Discrepancies could not be assigned to changes in volume between studies nor to a lack of precise endocardial definition. Simultaneous imaging demonstrated that the ultrasonic transducer was located 33 degrees cephalad to the cardiac apex. Although angiographic volume was severely underestimated, ejection fraction (r = 0.93) and stroke volume (r = 0.90) could be calculated from two-dimensional echocardiograms using regression equations.
Published In/Presented At
Barrett, M. J., Jacobs, L., Gomberg, J., Horton, L., Wolf, N. M., & Meister, S. G. (1982). Simultaneous contrast imaging of the left ventricle by two-dimensional echocardiography and standard ventriculography. Clinical cardiology, 5(3), 208–213. https://doi.org/10.1002/clc.4960050302
Medicine and Health Sciences
Department of Medicine