Open AccessSimultaneous contrast imaging of the left ventricle by two‐dimensional echocardiography and standard ventriculography
Author(s) -
Barrett M. J.,
Jacobs L.,
Gomberg J.,
Horton L.,
Wolf N. M.,
Meister S. G.
Publication year - 1982
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960050302
Subject(s) - medicine , ventricle , contrast (vision) , ejection fraction , stroke volume , cardiology , volume (thermodynamics) , radiology , nuclear medicine , heart failure , artificial intelligence , computer science , physics , quantum mechanics
Simultaneous contrast two‐dimensional echocardiograms and contrast ventriculograms were analyzed for 19 cardiac cycles in 6 patients. Ventriculographic volume was underestimated by 40 ± 4.5% (p <.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° 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.