Aortic diameters in infants and young children: normative angiographic data.

Cineangiographic measurements, in the left anterior oblique view, of the diameter of the ascending aorta, arch, isthmus, postisthmic region, and descending aorta were made in 18 infants and children with no detectable cardiac anomaly and in 47 with congenital heart disease that did not involve the aorta. Results are tabulated according to age and body surface area. They provide normative data from which variations from usual can be judged.