Results 61 to 70 of about 5,766,879 (155)

Automated flow rate calculation based on digital analysis of flow convergence proximal to regurgitant orifice

, 1993
Objectives. The purpose of the study was to develop and validate an automated method for calculating regurgitant flow rate using color Doppler echocardiography.Background.
David H. Thoreau, J.Miguel Rivera, Arthur E. Weyman, Pieter M. Vandervoort, Robert A. Levine, James D. Thomas   +5 more
core   +1 more source

Understanding continuous-wave Doppler signal intensity as a measure of regurgitant severity

, 1997
Continuous-wave Doppler signal intensity is commonly expected to reflect the severity of mitral regurgitation. Physical principles predict that alignment of the imaging beam, flow velocity, and turbulence can also be important or even dominant ...
Bolger, A F, Loyd, Dan,, Ask, Per,, Eidenvall, L, Wranne, Bengt,   +4 more
core  

The effective regurgitant orifice area is predictive of survival in patients with organic mitral regurgitation

Journal of the American College of Cardiology, 2003
Enriquez-Sarano, Maurice L., Tajik, A.Jamil, Messika-Zeitoun, David, Avierinos, Jean-Francois, Bellamy, Michael, Tribouilloy, Christophe   +5 more
openaire   +1 more source

Analysis of Mitral Regurgitation from Slit Orifices By Ultrasonic Imaging

, 2011
An ultrasonic diagnostic imaging system is described which quantifies regurgitant flow through a plurality of pinhole leaks or a slit leak of a mitral valve.

core   +1 more source

Localization of Regurgitant Common Atrioventricular Valve Commissures in Atrioventricular Septal Defects Using Color Flow Doppler Echocardiography

, 1992
vii, 40 p.The commissures of the five-leaflet common atrioventricular (A V) valve characteristic of the atrioventricular septal defect (AVSD) can be seen en face using a subcostal 2-dimensional echocardiographic imaging plane. If color flow Doppler is
Yanock, Christa M.
core   +1 more source

Effect of empagliflozin with or without carvedilol on tricuspid regurgitation and right ventricular remodeling: PROVE trial. [PDF]

J Cardiovasc Imaging
Kim GY, Lim SM, Yang DH, Lee JE, Lee S, Park SJ, Hwang IC, Yoon YE, Shim CY, Kim HK, Yun SC, Song JM, Kang DH.   +12 more
europepmc   +1 more source

Contrasting effect of similar effective regurgitant orifice in mitral and aortic regurgitation: A quantitative doppler echocardiographic study

Journal of the American College of Cardiology, 1996
Sarano, Maurice E., Miller, Fletcher A., Seward, James B.   +2 more
openaire   +1 more source

Diagnostic Value of 3D Transesophageal Vena Contracta Area versus 2D Echocardiographic Assessment of Secondary Mitral Regurgitation. [PDF]

Echocardiography
Diab RA, Zaki ER, Elhalawany BAE.
europepmc   +1 more source

The effect of orifice shape on the normalized velocity distribution method for the quantification of mitral regurgitant orifice area

Journal of the American College of Cardiology, 2002
Deserranno, Dimitri, Richards, Kathryn E., Greenberg, Neil L., Thomas, James D., Garcia, Mario J.   +4 more
openaire   +1 more source

Non-circular orifice flowfields in valvular regurgitation

, 1995
The proximal flowfield (PFF) is a primary tool in quantifying valvular regurgitation when using Color Doppler Ultrasound (CDU) in-vivo. Regurgitant flow calculations are made using the proximal isovelocity surface area (PISA) method and the aliasing ...
Green, Derek W., Anayiotos, Andreas, Myers, Jerry G.   +2 more
core