MITRAL-VALVE FLOW MEASURED WITH CINE MR VELOCITY MAPPING IN PATIENTS WITH ISCHEMIC-HEART-DISEASE - COMPARISON WITH DOPPLER-ECHOCARDIOGRAPHY

Citation
Sp. Karwatowski et al., MITRAL-VALVE FLOW MEASURED WITH CINE MR VELOCITY MAPPING IN PATIENTS WITH ISCHEMIC-HEART-DISEASE - COMPARISON WITH DOPPLER-ECHOCARDIOGRAPHY, Journal of magnetic resonance imaging, 5(1), 1995, pp. 89-92
Citations number
NO
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
ISSN journal
1053-1807
Volume
5
Issue
1
Year of publication
1995
Pages
89 - 92
Database
ISI
SICI code
1053-1807(1995)5:1<89:MFMWCM>2.0.ZU;2-W
Abstract
Diastolic function is an important element of overall left ventricular function, The pattern of flow across the mitral valve is commonly use d as a measure of diastolic ventricular function, Magnetic resonance ( MR) velocity mapping of blood flow across the mitral valve was compare d with Doppler echocardiography. Nineteen patients with known coronary artery disease (mean age, 62 years; ii with previous myocardial infar ction) 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/sec +/- 13.7 with echocardiography (P =.732), The mean differe nce 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/sec(2) +/- 1.5 with the MR method and 4.0 m/sec(2) +/- 1.5 w ith echocardiography (P =.073), The mean difference was -0.4 cm/sec(2) (-0.92 cm/sec(2), +0.05 cm/sec(2)), The mean value of peak atriosysto lic 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 c m/sec (-18.1 cm/sec, -3.45 cm/sec), Peak atrial filling was consistent ly lower with the MR method than with echocardiography. Time-averaged measurements of ventricular filling with MR velocity mapping are an ac curate measure of early diastolic filling but underestimate the veloci ty of atriosystolic filling.