David W. Swenson MD, Presenter: Nothing to Disclose

Jamie Frost DO, Abstract Co-Author: Nothing to Disclose

Laureen Marie Sena MD, Abstract Co-Author: Nothing to Disclose

Purpose: 1. Review embryology of aortic arch development. 2. Draw on examples from 137 patients over 14 years with aortic arch anomalies to highlight CT and MRI findings that will accurately classify aortic arch anomalies and vascular ring status. 3. Focus on subtle but reproducible CT and MRI findings that aid understanding atypical vascular rings and guide surgical management. Particular attention will be paid to the location and significance of Kommerell’s diverticulum, and to both direct and indirect signs of the presence of ligaments that complete atypical rings.  

1. Edward’s Model of Arch Development 2. Imaging Examples of typical vascular rings - E.g. Double aortic arch, and right aortic arch with aberrant left subclavian 3. Focus on CT and MRI findings that confirm atypical aortic arch anatomy and vascular ring status - Double aortic arch with atretic left arch segment - Right aortic arch with aberrant left subclavian artery - Circumflex aortic arch 4. Signs of ligamentous tethering - Diverticulum of Kommerell – Mass effect and location of ductal ligament - Displacement, angulation, and/or tethering of vessels - Direct visualization of the tethering ligament on high resolution imaging - Tracheal and/or bronchial narrowing  

http://abstract.rsna.org/uploads/2014/14011607/14011607_9gmx.pdf

Swenson, D, Frost, J, Sena, L, Atypical Vascular Rings of the Aortic Arch: Subtle Findings on CT and MRI That Lead to Definitive Diagnoses and Guide Surgical Management.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14011607.html