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《Chinese Journal of Medical Imaging Technology》 2011-01
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Assessment on right ventricular function of patients with acute pulmonary embolism with CT pulmonary artery obstruction index

ZHOU Xin-wei1,WANG Jian-guo1,LIU Dong2,ZHU Li3,MA Qin-hua1,GUO You-min4(1.Department of Radiology,Shenzhen luohu People's Hospital,Shenzhen 518001,China;2.Intensive Care Unit,Shenzhen Children's Hospital,Shenzhen 518040,China;3.Imaging Center,the Affiliated Hospital of Ningxia Medical College,Yinchuan 750004,China;4.Department of PET/CT Room,the First Hospital of Medical College of Xi'an Jiaotong University,Xi'an 710061,China)  
Objective To semi-quantitatively evaluate the right ventricular function in patients with acute pulmonary embolism(APE) with CT pulmonary artery obstruction index(PAOI).Methods Totally 117 patients with APE diagnosed with spiral computed tomography were retrospectively analyzed and selected as being non-severe of underlying cardiopulmonary disease.PAOI was estimated on the basis of the degree of obstruction and location of the thrombus on CT imaging according to the method described by Mastora etc.The patients were divided into mild,moderate or severe categories according to PAOI 30%,30%-50%,50%.The differences of cardiovascular parameters among the three groups were calculated.Results There were 65,32 and 20 patients in mild,moderate and severe groups,respectively.Comparison of cardiovascular parameters between mild and moderate groups showed significant differences in right ventricle diameter(RV_d) and right ventricle square(RV_s),left ventricle diameter(LV_d) and left ventricle square(LV_s),right ventricle/left ventricle diameter ratio(RV_d/LV_d) and right ventricle/left ventricle square(RV_s/LV_s),main pulmonary artery(MPA),left pulmonary artery(LPA),interventricular septum deviation(IVSD),as well as in reflux of the inferior vena cava(IVCR).Comparison of mild and severe groups showed significant differences in RV_d,LV_d,RV_d/LV_d,RV_s,LV_s,RV_s/LV_s,SVC,MPA,right pulmonary artery(RPA),LPA,IVSD,IVCR and reflux of the azygos vein(AZR).Comparison of moderate and severe groups showed significant differences in LV_d,RV_d/LV_d and RV_s/LV_s.Conclusion CTPA obstruction index can reflect the right heart function of acute pulmonary embolism,being prompt to confirm the extent of APE in the first time.
【Fund】: 罗湖区软科学研究计划项目(2009007)
【CateGory Index】: R563.5
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