title: [Assessing heart function of patients with single left ventricular valvalar insufficiency leision using 64-slice multi-detector row CT angiography].
abstract: OBJECTIVE
  To evaluate the accuracy of results of heart functions determined by 64-slice multidetector row computed tomography (64-MDCT) in patients with single valvular insufficiency leision in left ventricle.
  
  
  METHODS
  58 patients with single valvular insufficiency leision in left ventricle were enrolled in this study. Their heart functions were assessed by magnetic resonance imaging (MRI), 64-MDCT and echocardiography (Echo) respectively. The assessed parameters included left ventricular end-diastolic and end-systolic volume (LVEDV, LVESV), stroke volume (LVSV), ejection fraction (LVEF), and effective ejection fraction (eLVEF). The correlations between eLVEF and some clinical indicators, such as cardiopulmonary bypass time (CPBT), ventilation time (VT), vasoactive drug used time (VDUT), and length of ICU stay (ICUST) were analyzed.
  
  
  RESULTS
  No significant differences were found in the parameters measured by 64-MDCT, Echo and MRI. A strong correlation between 64-MDCT and MRI (r: 0.79-0. 92) was found with all of the parameters. The eLVEF measured by 64-MDCT and MRI correlated with CPBT, VT, VDUT and ICUST well (r: 0.56-0. 84).
  
  
  CONCLUSIONS
  64-MDCT is a rapid, accurate and cheap choice for assessing heart functions of patients with single valvular insufficiency leision in left ventricle. eLVEF is a good predictor for the outcomes of operations.
authors: Deparment of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu 610041, China.
authors: Tai-Ming
authors: TM
authors: Zhang
authors: Deparment of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu 610041, China.
authors: Li
authors: L
authors: Dong
authors: Deparment of Cardiac Surgery, Daping Hospital of Third Military Medical University, Chongqing 400042, China.
authors: Ye
authors: Y
authors: Yuan
authors: Deparment of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu 610041, China.
authors: Jiang-Long
authors: JL
authors: Hou
authors: Deparment of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
authors: Zhi-Gang
authors: ZG
authors: Yang
authors: Deparment of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
authors: Ying-Kun
authors: YK
authors: Guo
mesh_terms: D000792:Angiography; D003971:Diastole; D004452:Echocardiography; D006352:Heart Ventricles; D006801:Humans; D008279:Magnetic Resonance Imaging; D013318:Stroke Volume; D013599:Systole; D014057:Tomography, X-Ray Computed; D018487:Ventricular Dysfunction, Left / Q000503:physiopathology*