ObjectiveTo explore the clinical value of combined 64 slice spiral CT and echocardiography in the diagnosis of complex congenital heart disease (CCHD). Methods88 cases of CCHD patients in our hospital were selected. 64 layers of spiral CT and echocardiography were used to examine patients, and with the results of the operation as the gold standard. Evaluation of the diagnostic efficacy of 64-slice spiral CT, echocardiography, and two combined detection of cardiac malformation. Results146 deformities in 88 cases of the patients were found, there were 52 parts of the cardiac malformation, 31 deformities of the heart and large vascular junction, 63 major vascular malformations. A total of 133 deformities were detected by 64 slice spiral CT and the results were consistent with the operation. The diagnostic coincidence rate was 91.10%. A total of 129 deformities detected by echocardiography and coincidence with surgery. The diagnostic coincidence rate was 88.36%. Combined examination of 64 layers of spiral CT and echocardiography to detect 142 deformities and the coincidence of operation. The diagnostic coincidence rate was 97.26% (P＞0.05). There was no significant difference between the diagnostic coincidence rate of 64 slice spiral CT and The diagnostic coincidence rate of echocardiography(P＞0.05). The diagnostic coincidence rate of the two combined examination of diagnostic malformation was significantly higher than that of 64 slice spiral CT or echocardiography. The difference was statistically significant (P＜0.05). Conclusion64 layers spiral CT and echocardiography are used to diagnose CCHD, which is noninvasive, accurate, fast, and inexpensive. Combined diagnosis can significantly improve the accuracy of the diagnosis. It has high clinical value.

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