Results 181 to 190 of about 3,618 (199)
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American Heart Journal, 1991
The determinants of the aortic regurgitant velocity profile have been investigated using computer and in vitro simulations in which regurgitant orifice area, ventricular and aortic compliance, and systemic vascular resistance could be independently varied.
B P, Griffin +4 more
openaire +2 more sources
The determinants of the aortic regurgitant velocity profile have been investigated using computer and in vitro simulations in which regurgitant orifice area, ventricular and aortic compliance, and systemic vascular resistance could be independently varied.
B P, Griffin +4 more
openaire +2 more sources
The International Journal of Cardiovascular Imaging
Computational fluid dynamics (CFD) was used to identify factors influencing the accuracy of the hemispherical proximal isovelocity surface area (PISA) method in calculating the effective regurgitant orifice area (EROA) for patients with functional mitral regurgitation (FMR).
Hongning, Song +7 more
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Computational fluid dynamics (CFD) was used to identify factors influencing the accuracy of the hemispherical proximal isovelocity surface area (PISA) method in calculating the effective regurgitant orifice area (EROA) for patients with functional mitral regurgitation (FMR).
Hongning, Song +7 more
openaire +2 more sources
Changgeng yi xue za zhi, 1994
Traditional Doppler pressure half-time (T1/2) method (mitral valve area = 220/T1/2) is widely used for evaluating the mitral orifice area in patients with mitral stenosis (MS). However, the effect of mitral regurgitation (MR) and aortic regurgitation (AR) on the calculation of the mitral valve area by this method is still controversial.
K C, Chang +5 more
openaire +1 more source
Traditional Doppler pressure half-time (T1/2) method (mitral valve area = 220/T1/2) is widely used for evaluating the mitral orifice area in patients with mitral stenosis (MS). However, the effect of mitral regurgitation (MR) and aortic regurgitation (AR) on the calculation of the mitral valve area by this method is still controversial.
K C, Chang +5 more
openaire +1 more source
2012
Effective regurgitant orifice area (EROA) in mitral regurgitation (MR) is difficult to quantify. Clinically it is measured using the proximal isovelocity surface area (PISA) method, which is intrinsically not automatable because it requires the operator to manually identify the mitral valve orifice.
openaire +1 more source
Effective regurgitant orifice area (EROA) in mitral regurgitation (MR) is difficult to quantify. Clinically it is measured using the proximal isovelocity surface area (PISA) method, which is intrinsically not automatable because it requires the operator to manually identify the mitral valve orifice.
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The Journal of heart valve disease, 1998
The aortic regurgitant jet is frequently eccentric, and Doppler color flow mapping techniques of the distal jet is influenced by this eccentricity. The aim of the present study was to determine whether the effective regurgitant orifice area (EROA), determined by the proximal isovelocity surface area (PISA) method using multiplane transesophageal ...
Y, Sato +9 more
openaire +1 more source
The aortic regurgitant jet is frequently eccentric, and Doppler color flow mapping techniques of the distal jet is influenced by this eccentricity. The aim of the present study was to determine whether the effective regurgitant orifice area (EROA), determined by the proximal isovelocity surface area (PISA) method using multiplane transesophageal ...
Y, Sato +9 more
openaire +1 more source
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, 1999
A 3D computational model has been implemented for the evaluation of the hemodynamics of the double orifice repair. Critical issues for surgical decision making and echo-Doppler evaluation of the results of the procedure are investigated.A parametric 3D computational model of the double-orifice mitral valve based on the finite elements model has been ...
MAISANO F. +5 more
openaire +3 more sources
A 3D computational model has been implemented for the evaluation of the hemodynamics of the double orifice repair. Critical issues for surgical decision making and echo-Doppler evaluation of the results of the procedure are investigated.A parametric 3D computational model of the double-orifice mitral valve based on the finite elements model has been ...
MAISANO F. +5 more
openaire +3 more sources
European Heart Journal - Cardiovascular Imaging
Abstract Background The threshold value of the effective regurgitant orifice area (EROA) that identifies patients with secondary tricuspid regurgitation (STR) at high risk of events during follow-up remains unclear.
C Pece +14 more
openaire +1 more source
Abstract Background The threshold value of the effective regurgitant orifice area (EROA) that identifies patients with secondary tricuspid regurgitation (STR) at high risk of events during follow-up remains unclear.
C Pece +14 more
openaire +1 more source
Changes in Effective Regurgitant Orifice Throughout Systole in Patients With Mitral Valve Prolapse
Circulation, 1995Maurice Enriquez-Sarano +2 more
exaly