By Agwuna, Kennedy Kenechukwu, and Anyanwu, G. E.
Objective of study: To determine the relevance of the transverse aortic arch diameter in the evaluation of early aortic and cardiac enlargements.
Subject and method: A total of 1818 chest radiographs of male and female normotensive and hypertensive Nigerians of age range 4-80 and 10-80 years respectively were used for this study. Ages of subjects were obtained and transverse aortic arch, chest and heart diameters were determined.