In color Doppler flow studies,“variance” is an important display modality for diagnosing
stenotic, regurgitant, and shunt lesions. Variance, a mathematical calculation based on the …

Two-dimensional color Doppler echocardiography enables delineation of the spatial and
temporal distribution of blood flow in the heart. In this study, the method was applied for …

Regurgitant blood flow of mitral valves was studied by transesophageal Doppler color flow
echocardiographic imaging in 11 healthy volunteers (Group 1), 25 cardiac patients with a …

The character of the color flow Doppler jet provides information on the mechanism and
pathologic elements of valve dysfunction. This has been useful in the evaluation of mitral …

These imaging methods provide valuable information concerning the severity of valvular
heart disease, its effect on ventricular function, and the presence or absence of various …

Intraoperative echocardiography of the mitral valve has evolved from a qualitative
assessment of flow-dependent variables to quantitative geometric analyses before and after …

Two hundred Carpentier-Edwards, Björk-Shiley, and Starr-Edwards prostheses in 173
patients were examined. Sixteen (16%) in the aortic and 24 (25%) in the mitral position were …

The role of the subvalvular apparatus in preserving left ventricular (LV) systolic function,
regional LV mechanics and three-dimensional contraction synergy has now been generally …

Surgical valve repair for mitral regurgitation has significant advantages over valve
replacement, but little is known about the mechanisms of its failure. This echocardiographic …

The strategy for the evaluation of valve disease has significantly changed with the
development of color Doppler echocardiography, which often reveals complete information …