Fig. 19From: Pictorial review of the pulmonary vasculature: from arteries to veinsBronchial artery anatomy. Coronal CT of the chest shows a dilated right bronchial artery (5Â mm) arising from the intercostal bronchial artery trunk (ICBAT) (white arrow) of the postero-lateral thoracic aorta at the level of T6. Please note that the normal bronchial artery is less than 2Â mm in diameter. While ICBAT origin is the most typical of the right bronchial artery, the left bronchial arteries usually arise directly from the aortaBack to article page