Abstract：Objective: To study the value of 16-slice helical CT(MSCT) and three-dimensional(3D) reconstructions in the diagnosis of extracardial vascular deformities in patients with congenital heart disease(CHD). Methods: To analyse extracardial vascular abnormalities in 26 patients confirmed by surgery. All patients were examined by contrast-enhanced MSCT and subsequent 3D reconstruction at work-station. Correlative evaluations were performed with 26 echocardiograms(UCG) and 13 cineangiocardiograms(CAG). Results: Eighty-three extracardial vascular abnormalities were confirmed. The denifite rate of diagnosis of MSCT, UCG and CAG were 98.8%, 89.2%, 100% respectively. MSCT and CAG were superior to UCG in the identification of extracardial vascular abnormalities（χ2=4.76, P<0.05）; (χ2=4.11, P<0.05）, the diagnostic accuracy of MSCT and CAG showed no difference（χ2=0.43, P>0.05）. Conclusions: MSCT(short acquisition time of image) with 3D reconstruction were superior to UCG for the assessment of extracardial vascular abnormalities in patients with CHD and could demonstrate the pathological morphology. This combination was a good noninvasive diagnostic way in preoperative evaluation and selecting operative modality. The combination of MSCT and UCG was a substitution for invasive CAG in great extent.
2007, Vol. 18 
