Accuracy of Matrix-Array Three-Dimensional Echocardiographic Measurements of Aortic Root Dilation and Comparison with Two-Dimensional Echocardiography in Pediatric Patients

Three-dimensional echocardiography compares favorably with 2DE in the evaluation of aortic root dilation in patients with known histories of aortic root disease. Three-dimensional echocardiography found that the largest diameter measured was significantly larger than on 2DE. The interobserver variability of 3DE is low, particularly in the AP dimension and in identifying the largest diameter. Three-dimensional echocardiography can be a useful technique in the periodic surveillance of patients with aortic root dilation.