3DSTI、2DE和MRI检测扩张型心肌病患者左心室收缩功能结果的比较

Comparative study on the left ventricular systolic function by three dimensional speckle tracking imaging,two-dimensional echocardiography and magnatic resonance imaging in patients with dilated cardiomyopathy

目的:比较三维斑点追踪成像(3DSTI)、二维超声心动图(2DE)和磁共振成像(MRI)检测扩张型心肌病(DCM)患者左心室收缩功能的结果。方法:纳入22例DCM患者,在24h内分别运用MRI、3DSTI和2DE检测左室收缩末期容积(LVESV)、左室舒张末期容积(LVEDV)及左室射血分数(LVEF),分析比较各种检测方法所得结果之间的异同。结果:3种方法测得的LVESV、LVEDV和LVEF值组间比较均呈显著正相关。2DE组的LVEF值为(33.4±11.0)%,3DSTI组为(29.1±9.6)%,MRI组为(25.8±10.4)%,3组间差异有统计学意义(P<0.05);其中3DSTI组分别与2DE组和MRI组比较差异均无统计学意义(均P>0.05);MRI组较2DE组明显降低(P<0.05)。结论:在DCM患者中,与作为左室收缩功能检测金标准的MRI比较,3DSTI检测得到的LVEF值比2DE更为准确。

Objective：The three measurements for left ventricular systolic function by three dimensional speckle tracking imaging（3 DSTI）,two-dimensional echocardiography（2 DE）and magnatic resonance imaging（MRI）were comparatively studied in patients with dilated cardiomyopathy（DCM）.Method：End-diastolic volume（LVEDV）,end-systolic volume（LVESV）and ejection fraction（LVEF）of left ventricle in 22 patients with DCM were measured using the three kinds of methods in 24 hours,and the results were compared and analyzed.Result：The LVEDV,LVESV and LVEF in the patients with DCM were obviously positive correlation among the three groups.The LVEF were（33.4±11.0）%,（29.1±9.6）% and（25.8±10.4）%in 2 DE,3 DSTI and MRI groups respectively（P〈0.05）.The difference of LVEF between 3 DSTI and 2 DE groups was no statistical significance as well between 3 DSTI and MRI groups（P〉0.05）,other than between 2 DE group and MRI group（P〈0.05）.Conclusion：Compared with that of MRI,the golden standard of left ventricular systolic function detection,the result of LVEF detected using 3 DSTI is more accurate than that of 2 DE detection in patients of DMC.