Extracellular volume fraction in @entity1563 XXXX .

@entity1 @entity296 @entity1563 @entity1188 @entity1562 @entity432 @entity2287
(1) To assess extracellular volume fraction (ECV) and regional systolic function in @entity1 presenting with @entity1563 ( @entity432 ) in areas without significant late @entity2287 enhancement (LGE), and (2) to investigate the correlation between angiography collateral flow and ECV in territories supplied by @entity432 vessels. A total of 50 angiographically documented @entity432 @entity1 and 15 age- and sex-matched normal controls were recruited to the study. Myocardial ECV, was calculated in @entity1188 and the entire @entity1562 respectively. Segmental ECV was calculated from @entity296 within the perfusion territory of a @entity432 vessel. The global and regional systolic function was evaluated using ejection fraction and percent systolic thickening. ECVs in global @entity1562 and global non-infarcted @entity1562 were significantly elevated in comparison with that in controls (29.1    4.2% and 26.6    2.6% vs. 23.3    2.0%, all P < 0.005). Global ECV significantly correlated with LV ejection fraction (r = -0.56, P < 0.001) and ECV inversely correlated with systolic thickening in global non-infarcted @entity1562 (r = -0.31, P < 0.05). The lower segmental ECV was associated with the presence of well-developed collaterals (P = 0.004), and multivariate binary logistic analysis demonstrated that mean segmental ECV and course of disease were the independent discriminator of collateral flow with overall diagnostic accuracy of 74.4%. In @entity1 with @entity432 , ECV is found to be increased beyond that observed with LGE, and correlates with LV regional wall motion abnormality, which appears to reflect diffuse @entity296 . Mean segmental ECV value, combined with course of disease, may serve as good predictors of collateral flow.
