#{149} Be able to work up a trauma patient to exclude or detect thoracic aortic injury. #{149} Be familiar with general and specific radiographic signs of mediastinal hematoma and several pitfalls in evaluating trauma chest radiogr-aphs. #{149} Understand the difference between direct and indirect CT signs of aortic injury. #{149} Be able to identify vat-i-OtiS angiographic findings in aortic injury and distinguish between traumatic pseudoaneurysm and duetus diverticulum. #{149} Realize the significance of chronic posttraumatic pseudoaneurysm and its propensity to rupture and know the surgicaltechniques used to repair aortic injury.