MRI assessment of cardiac function in patients with single ventricle

Objective To assess the function of single ventricle by magnetic resonance(MR).Methods In 53 cases of sin- gle ventricle,there were 31 boys and 22 girls,with the mean age of(4.49±3.95)years.Forty-three patients underwent MRI preoperatively,and 10 patients did so postoperatively.Cardio angiography(CAG)was performed in all 53 patients simultaneously.End-diastolic volume(EDV),end-systolic volume(ESV),stroke volume(SV)and ejection fraetion(EF) were calculated,and the outcomes of MRI and CAG were compared.Results The mean EDV,ESV,SV and EF obtained with MRI was(101.61±33.61)ml/m~2,(40.31±16.56)ml/m~2,(62.59±22.66)ml/m~2 and(61.23±8.45)%,respective- ly,whereas withCAG,was(137.59±53.59)ml/m~2,(61.81±22.13)ml/m~2,(76.05±35.46)ml/m~2 and(53.61±9.68)%,respectively.No significant difference was found between MR and CAG on these indices.Conclusion MR is the best noninvasive modality to evaluate the function of single ventricle and a useful tool for following up.