Blood flow in coronary artery bypass vein grafts: volume versus velocity at cardiovascular MR imaging.

Abstract:

:Forty-nine patients with previous bypass surgery underwent coronary angiography and cardiovascular magnetic resonance (MR) imaging of single-vein bypass grafts. Volume flow and velocity analyses were performed and compared on MR velocity maps. Bland-Altman analysis showed close agreement between the two types of analysis. Comparison of areas under the receiver operating characteristic curve revealed no significant differences between the analyses for detection of stenoses of 70% or greater. Diagnostic accuracy for volume flow and velocity parameters was 92% and 93%, respectively. Velocity analysis appears to be the preferred method, because it is less time-consuming and has a similar diagnostic accuracy to volume flow analysis.

journal_name

Radiology

journal_title

Radiology

authors

Salm LP,Langerak SE,Vliegen HW,Jukema JW,Bax JJ,Zwinderman AH,van der Wall EE,de Roos A,Lamb HJ

doi

10.1148/radiol.2323030289

subject

Has Abstract

pub_date

2004-09-01 00:00:00

pages

915-20

issue

3

eissn

0033-8419

issn

1527-1315

pii

2323030289

journal_volume

232

pub_type

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