Search results
Results From The WOW.Com Content Network
Computed tomography angiography (also called CT angiography or CTA) is a computed tomography technique used for angiography—the visualization of arteries and veins—throughout the human body. Using contrast injected into the blood vessels, images are created to look for blockages, aneurysms (dilations of walls), dissections (tearing of walls ...
Fluoroscopic image of an aorta affected by Leriche's syndrome. In medicine, aortoiliac occlusive disease is a form of central artery disease involving the blockage of the abdominal aorta as it transitions into the common iliac arteries.
Coronary CT angiography (CTA or CCTA) is the use of computed tomography (CT) angiography to assess the coronary arteries of the heart.The patient receives an intravenous injection of radiocontrast and then the heart is scanned using a high speed CT scanner, allowing physicians to assess the extent of occlusion in the coronary arteries, usually in order to diagnose coronary artery disease.
The size cut off for aortic aneurysm is crucial to its treatment. A thoracic aorta greater than 4.5 cm is generally defined as aneurysmal, while a size greater than 5.5 cm is the distinction for treatment, which can be either endovascular or surgical, with the former reserved for pathology at the descending aorta. [12] [13]
Aortic rupture is the breakage of all walls of the aorta, the largest artery in the body. Aortic rupture is a rare, extremely dangerous condition that is considered a medical emergency . [ 1 ] The most common cause is an abdominal aortic aneurysm that has ruptured spontaneously.
In the ascending aorta (the portion of the aorta which is almost vertical), one mechanism of injury is torsion (a two-way twisting). [5] There are clinical predictors of an aortic injury. [ 6 ] The predictors include if a patient is older than 50, was an unrestrained patient, has hypotension, has a thoracic injury requiring thoracotomy, has a ...
By far the most common site for tearing in traumatic aortic rupture is the proximal descending aorta, near where the left subclavian artery branches off from the aorta. [7] The tethering of the aorta by the ligamentum arteriosum makes the site prone to shearing forces during sudden deceleration.
Aortography involves placement of a catheter in the aorta and injection of contrast material while taking X-rays of the aorta.The procedure is known as an aortogram. The diagnosis of aortic dissection can be made by visualization of the intimal flap and flow of contrast material in both the true lumen and the false lumen.