[en] We developed a computer program to analyze videodensity changes due to contrast appearance within a given operator-designated rectangle using two-dimensional echocardiograms previously recorded on videotape. Videodensity curves have been obtained from two-dimensional echocardiographic recordings in 14 patients after a total of 32 injections of 5% dextrose solution into the left ventricle during cardiac catheterization. The resulting videodensity vs time curves have some characteristics of indicator-dilution curves. The decay phase of these curves is largely mono-exponential. Potential clinical applications of this technique in measurement of ejection fraction, cardiac output and shunt quantification are discussed, as well as some potential limitations.
Disciplines :
Cardiovascular & respiratory systems
Author, co-author :
Meltzer, R. S.
Roelandt, J.
Bastiaans, O. L.
Pierard, Luc ; Université de Liège - ULiège > Département des sciences cliniques > Cardiologie - Pathologie spéciale et réhabilitation
Serruys, P. W.
Lancee, C. T.
Language :
English
Title :
Videodensitometric processing of contrast two-dimensional echocardiographic data.
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