Clinical Study Of 64 Slice Computed Tomography In The Diagnosis Of Complex Congenital Heart Disease

Objective To determine the clinical value of 64-slice compute tomography (64SCT) with contrast enhancement scan and three-dimensional reconstructed techniques for the diagnosis of complex congenital heart disease (CCHD), and to compare the diagnosis of the application and the non of the electrocardiographically-gating technic in 64SCT imaging of scan.Methods The 64SCT date of 39 patients confirmed by operation were retrospectively analyzed. 64SCT scanning of the application of the electrocardiographically-gating technic was done in 8 cases, and 64SCT scanning of the non-application was done in 31 cases. All the patients were compared with transthoracic echocardiograms (TTE) in the group before surgery.Results A total of 102 cardiac deformities confirmed by operation were studied. In 47 intracardiac deformities, the accuracys of 64SCT, TTE in detecting cardiac deformities were 85. 1%, 95.7%, respectively (40 righted by 64SCT, 45 righted by TTE.) There was no obvious difference among 64SCT and TTE in the diagnosis of intracardiac deformities (x~2=2. 68, P>0. 05). In 55 extracardiac anomalies, the definite diagnosis rate of 64SCT, TTE were 98.2%, 78.2% , respectively. 64SCT was superior to TTE in the indenti-fication of extracardiac deformties (x~2=14. 64, P<0. 01). 64SCT combined with TTE could increase the diagnostic accuracy rate to 99%. The accuracys of the application and the non of the electrocardiographically-gating technic in detecting cardiac deformities were 90. 9%, 100%, respectively. There was no obvious difference among the application and the non in 64SCT imaging of scan in the diagnosis of cardiac deformities (x~2=1.84, P>0. 05).Conclusion 64SCT may be used to display clearly the pathologic anatomy of CCHD and is superior to TTE remarkably in the diagnosis of extracardiac anomalies. Therefore, as a non-invading technique, 64SCT has a preferable value in diagnosis of CCHD. There was no obvious difference in the diagnosis of cardiac deformities of 64SCT among the application and the non of the electrocardiographically-gating technic.