Donor's External Carotid Artery (IMAGE) Radiological Society of North America Caption This is a CT angiography after face transplantation. The donor's external carotid artery (pink) was successfully anastomosed to the recipient's vessel (rectangular area). Branches distal to the ligation (white line) receive blood flow from collateral vessels (arrows). Credit Radiological Society of North America Usage Restrictions May use with proper credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.