MR angiography is well suited in the evaluation of the aorta and it’s major branches. The high quality of the images obtained provides a noninvasive means to replace catheter based angiography in a wide variety of situations.
A simple I.V. injection of a safe contrast agent (gadolinium-DTPA) allows detailed visualization of common abnormaliites previously requiring placement of a catheter. The fact that this contrast agent is not toxic to the kidneys makes MR angiography the initial test of choice in patients with impaired renal function.
On the 1.5 Tesla state of the art Siemens Symphony MR scanner operated by Turville Bay MR Center at St. Mary’s Hospital, a MR fluoroscopically triggered acquisition produces reproducible high quality images sufficient for diagnosis and surgical planning.
Common indications include: thoracic aortic aneurysm within the chest or abdomen, coarctation, aortic dissection, subclavian steal, thoracic outlet syndrome, vasculitis, congenital abnormalities and atherosclerotic stenoses.
Please review the cases below for typical examples: