Dynamic change in mitral regurgitant orifice area: comparison of color doppler echocardiographic and electromagnetic flowmeter-based methods in a chronic animal model

STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENT

1986 • 45,881 citations

Akufo and Ibarapa

1965 • 16,925 citations

Color Doppler assessment of mitral regurgitation with orthogonal planes.

1987 • 1,227 citations

Quantitative assessment of mitral regurgitation by doppler color flow imaging: Angiographic and hemodynamic correlations

1989 • 395 citations

A new method for quantitation of mitral regurgitation based on color flow Doppler imaging of flow convergence proximal to regurgitant orifice.

1991 • 353 citations

A new method for quantification of regurgitant flow rate using color Doppler flow imaging of the flow convergence region proximal to a discrete orifice. An in vitro study.

1991 • 313 citations

Review of hydrodynamic principles for the cardiologist: Applications to the study of blood flow and jets by imaging techniques

1988 • 305 citations

Effective regurgitant orifice area: A noninvasive Doppler development of an old hemodynamic concept

1994 • 296 citations

Dynamics of mitral regurgitant flow and orifice area. Physiologic application of the proximal flow convergence method: clinical data and experimental testing.

1994 • 281 citations

Transesophageal Doppler echocardiography of pulmonary venous flow: A new marker of mitral regurgitation severity

1991 • 207 citations

Doppler color flow “proximal isovelocity surface area” method for estimating volume flow rate: Effects of orifice shape and machine factors

1991 • 206 citations

Application of color Doppler flow mapping to calculate effective regurgitant orifice area. An in vitro study and initial clinical observations.

1993 • 195 citations

Quantification of jet flow by momentum analysis. An in vitro color Doppler flow study.

1990 • 164 citations

When should doppler-determined valve area be better than the Gorlin formula?: Variation in hydraulic constants in low flow states

1987 • 152 citations

Impact of finite orifice size on proximal flow convergence. Implications for Doppler quantification of valvular regurgitation.

1992 • 148 citations

Sources of variability for doppler color flow mapping of regurgitant jets in an animal model of mitral regurgitation

1989 • 123 citations

Influence of orifice geometry and flow rate on effective valve area: An in vitro study

1990 • 114 citations

Quantification of mitral regurgitation with the proximal flow convergence method: A clinical study

1992 • 100 citations

A new method for noninvasive quantification of valvular regurgitation based on conservation of momentum. In vitro validation.

1989 • 94 citations

Comparison of Valvular Resistance, Stroke Work Loss, and Gorlin Valve Area for Quantification of Aortic Stenosis

1995 • 88 citations

Noninvasive estimation of regurgitant flow rate and volume in patients with mitral regurgitation by doppler color mapping of accelerating flow field

1993 • 71 citations

Dynamic changes in the canine mitral regurgitant orifice area during ventricular ejection.

1979 • 64 citations

Evaluation of mitral regurgitation using a digitally determined color Doppler flow convergence 'centerline' acceleration method. Studies in an animal model with quantified mitral regurgitation.

1994 • 61 citations

Color Doppler echocardiographic determination of mitral regurgitant flow from the proximal velocity profile of the flow convergence region

1993 • 56 citations

Color Doppler Determination of Regurgitant Flow: From Proximal Isovelocity Surface Areas to Proximal Velocity Profiles: An In Vitro Study

1992 • 50 citations

Experimental Studies to Define the Geometry of the Flow Convergence Region: Laser Doppler Particle Tracking and Color Doppler Imaging

1992 • 49 citations

Value of acceleration flows and regurgitant jet direction by color Doppler flow mapping in the evaluation of mitral valve prolapse.

1990 • 48 citations

Determination of the most appropriate velocity threshold for applying hemispheric flow convergence equations to calculate flow rate: selected according to the transorifice pressure gradient. Digital computer analysis of the Doppler color flow convergence region.

1993 • 45 citations

Flow Velocity Acceleration in the Left Ventricle: A Useful Doppler Echocardiographic Sign of Hemodynamically Significant Mitral Regurgitation

1990 • 40 citations

Accuracy of flow convergence estimates of mitral regurgitant flow rates obtained by use of multiple color flow Doppler M-mode aliasing boundaries: An experimental animal study

1993 • 39 citations

Blood flow and blood velocity measurementin vivo by electromagnetic induction

1984 • 32 citations

Color Doppler diagnosis of mechanical prosthetic mitral regurgitation: Usefulness of the flow convergence region proximal to the regurgitant orifice

1990 • 31 citations

Cardiac motion can alter proximal isovelocity surface area calculations of regurgitant flow

1993 • 22 citations

Estimation of regurgitant flow volume based on centerline velocity/distance profiles using digital color M-Q Doppler: Application to orifices of different shapes

1994 • 18 citations

A mathematical model for the quantification of mitral regurgitation. Experimental validation in the canine model using contrast echocardiography.

1992 • 17 citations

Left ventricular function in experimental mitral regurgitation with intact chordae tendineae

1993 • 10 citations

Aortic valve morphology influences regurgitant volume in aortic regurgitation: in vivo evaluation

1991 • 9 citations