MDCT in diagnosis of double outlet right ventricle / 中国医学影像技术

ABSTRACT

Objective To observe the value of MDCT in diagnosis of double outlet right ventricle (DORV). Methods Clinical and imaging data of 36 patients with DORV confirmed with operation or cardioangiography were retrospectively analyzed. The preoperative results of MDCT and echocardiography (Echo) were compared with surgical findings. Results MDCT definitely diagnosed 34 patients with DORV, while 2 patients were misdiagnosed, and the accurate diagnostic rate was 94.44% (34/36).The accurate diagnostic rate of Echo was 75.00% (27/36), and the difference was statistically significant (P=0.022). Moreover, in the relationship of ventricular septal defect (VSD) with large artery and the special relationship of the large artery in DORV, the diagnostic accuracy of MDCT was 100% (36/36), of Echo was 80.56% (29/36), and the difference was statistically significant (P=0.017). For totally 119 intracardiac and extracardiac malformations in all 36 patients, no significant statistical difference of diagnostic accuracy for detecting intracardiac malformation was found between MDCT and Echo (P=0.474), whereas for extracardiac malformations, the diagnostic accuracy of MDCT (98.72% [77/78]) was higher than that of Echo (69.23% [54/78], P<0.001). Conclusion MDCT could diagnose DORV and combined malformation definitely, therefore providing important guidance for surgical planning.