Mitral valve flow measured with cine MR velocity mapping in XXXX with ischemic heart disease: comparison with Doppler echocardiography.

@entity1 @entity583 @entity11632 @entity453 @entity46726
Diastolic function is an important element of overall left ventricular function. The pattern of flow across the mitral valve is commonly used as a measure of diastolic ventricular function. Magnetic resonance (MR) velocity mapping of blood flow across the mitral valve was compared with Doppler echocardiography. Nineteen @entity1 with known @entity453 (mean age, 62 years; 11 with previous @entity583 ) were studied. The mean value of peak early filling velocity (+/- standard deviation) was 60.1 cm/sec +/- 14.3 with the MR method and 59.4 cm/ @entity46726 .7 with echocardiography (P = .732). The mean difference between the two measurements (95% confidence interval) was -0.8 cm/sec (-5.2 cm/sec, +2.2 cm/sec). The mean value of early deceleration was 4.3 m/ @entity11632 +/- 1.5 with the MR method and 4.0 m/ @entity11632 +/- 1.5 with echocardiography (P = .073). The mean difference was -0.4 cm/ @entity11632 (-0.92 cm/ @entity11632 , +0.05 cm/ @entity11632 ). The mean value of peak atriosystolic velocity was 51 cm/sec +/- 14.6 with the MR method and 62 cm/sec +/- 17.2 with echocardiography (P = .002). The mean difference was -11 cm/sec (-18.1 cm/sec, -3.45 cm/sec). Peak atrial filling was consistently lower with the MR method than with echocardiography. Time-averaged measurements of ventricular filling with MR velocity mapping are an accurate measure of early diastolic filling but underestimate the velocity of atriosystolic filling.
