320-multidetector cardiac computed tomography in the evaluation of conotruncal anomalies

Abstract

Abstract Background Multi-detector computed tomography (MDCT) has become an effective tool in the assessment of congenital heart disease in infants and children. Purpose To evaluate the role of 320-row MDCT in the assessment of conotruncal anomalies and compare it with echocardiography (echo) considering the operative and/or catheter findings as the gold standard. Methods The studied group included 50 patients having conotruncal anomalies. All patients were evaluated with 320-row MDCT angiography. Sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV) of MDCT and echo were calculated. The patient effective dose was reported. Results The overall sensitivity, specificity, accuracy, PPV and NPV for MDCT angiography in assessment of various abnormalities in patients with conotruncal anomalies were 98.97%, 100%, 99.75%, 100% and 99.67% for MDCT angiography. Sensitivity, specificity, PPV and NPV of MDCT angiography were 97.87%, 100%, 100% and 99.04% and 99.49%, 100%, 100% &99.86% for the detection of intracardiac defects and extracardiac vascular anomalies respectively. The mean absorbed radiation dose was 63.63 mGy-Cm per scan and the mean effective dose was 1.56±0.47 mSv. Conclusion 320-MDCT angiography offers an excellent diagnostic procedure in the preoperative evaluation of the complex anatomy of the conotruncal anomalies. Funding Acknowledgement Type of funding source: None