In patients with dilated cardiomyopathy, the late gadolinium enhancement rate correlated significantly with both cardiac magnetic resonance ejection fraction (R2 = 0.23, P<0.001) and deceleration time (R2 = 0.35, P<0.001).
Cross-Sectional (n=17)
No
In patients with dilated cardiomyopathy, the extent of myocardial fibrosis assessed by late gadolinium enhancement MRI correlates significantly with both left ventricular systolic dysfunction and diastolic dysfunction.
Effect estimate: R2 = 0.23 (CMREF) and R2 = 0.35 (DT)
p-value: p=<0.001
BACKGROUND: The distribution of left ventricular (LV) fibrosis and the percent fibrosis in patients with dilated cardiomyopathy (DCM) were evaluated using late gadolinium enhanced (LGE) MRI. Then the relation with the LV ejection fraction (EF) and deceleration time (DT), an index of diastolic function obtained using echocardiography, was investigated. METHODS AND RESULTS: LGEMRI at 20 min after intravenous injection of Gd-DTPA (0.15 +/-0.03 mmol/kg) was performed in 17 patients with DCM. The distribution of the LV enhanced area and LGE rate (%) were calculated. EF, as well as E/A ratio and DT were obtained using echocardiography. LGE was observed in 15 out of 17 patients (88%) and the enhanced region appeared to represent myocardial fibrosis. The LV fibrosis was often found in the intraventricular septum (IVS), but there were no differences in its distribution. The LGE rate (%) had a correlation between cardiac magnetic resonance ejection fraction (CMREF) (Y = 51.7 - 2.1X R(2) = 0.23, P<0.001) and DT (Y = 162.2 +12.0X R(2) = 0.35, P<0.001). CONCLUSIONS: The LV fibrosis is often found in the IVS with DCM. A correlation exists between LGE rate (%) to EF on CMR and DT on echocardiography in patients with DCM.
Nanjo et al. (Thu,) conducted a cross-sectional in Dilated cardiomyopathy (n=17). Late gadolinium enhancement (LGE) on MRI was evaluated on Correlation between LGE rate (%) and cardiac magnetic resonance ejection fraction (CMREF) or deceleration time (DT) (R2 = 0.23 (CMREF) and R2 = 0.35 (DT), p=<0.001). In patients with dilated cardiomyopathy, the late gadolinium enhancement rate correlated significantly with both cardiac magnetic resonance ejection fraction (R2 = 0.23, P<0.001) and deceleration time (R2 = 0.35, P<0.001).