Objective:To explor e the application value of late gadolinium enhancement-cardiac magnetic resonance imaging(LGE-CMR)on evaluating the function of patients with dilated cardiomyopathy(DCM).Methods:Eighty-seven patients with DCM admitted to the hospital from January 2020 to May 2023 were enrolled and underwent cardiac magnetic resonance imaging(CMR),including cine imaging and LGE-CMR.The scan results were analyzed to evaluate the relationship of absence or presence of LGE with New York Hearth Association(NYHA)cardiac function grading and CMR cardiac function parameters.Results:The positive rate of LGE in 87 patients was 41.38％(36/87).The patients with LGE(+)had 161 segments of delayed myocardial enhancement,and the most involved segments were the anterior and inferior walls of the base,and the morphology was mainly intermuscular linear.NYHA cardiac function grading of patients with LGE(+)was worse than that of patients with LGE(-)(P＜0.05),and left ventricular end diastolic volume index(LVEDVI)and left ventricular end systolic volume index(LVESVI)were significantly higher than those of patients with LGE(-)(P＜0.05)while left ventricular ejection fraction(LVEF),left ventricular fraction shortening(LVFS)and left ventricular sphericity index(LVSI)were significantly lower than those of patients with LGE(-)(P＜0.05).The number of LGE(+)segments was positively correlated with NYHA cardiac function grading,LVEDVI and LVESVI(r=0.645,0.494,0.532,P＜0.05),and was negatively correlated with LVEF,LVFS and LVSI(r=-0.518,-0.574,-0.461,P＜0.05).Conclusion:LGE(+)identified by LGE-CMR reflects myocardial fibrosis,and LGE(+)is related to structural function impairment after left ventricular remodeling.The more LGE(+)involved segments,the worse cardiac function.
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