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History:
47 year old Korean female with known history of Takayasu arteritis and
bilateral iliac stents for stenoses. Follow-up aorto iliac CT
angiogram was performed at Main Street Radiology
utilizing a 16-detector spiral CT.
Findings:
3D CT angiography images were generated with and without the skeleton
(Figures 1 and 2). Lateral view of the abdominal aorta (Figure 3)
demonstrates focal stenosis (arrow). Frontal view of the iliac
arteries (Figure 4) shows occlusion of the left iliac stent and common
femoral artery (yellow arrows), and near complete occlusion of the
right common femoral artery (green arrow). Collateral vessels are
present bilaterally (white arrows).
Discussion:
Takayasu arteritis is an
idiopathic granulomatous inflammatory process affecting the aorta,
major aortic branches, and pulmonary artery. It usually affects young
(<50 y.o.) females (8:1 F:M) from East Asia. Long or short
segmental stenoses are present, especially near the origins of major
branches. Fusiform or saccular aneurysms can also be seen in 10-15% of
the cases. MSR is the first facility in Queens to
install a 16-detector spiral CT. Due to its unprecedented speed,
sub-millimeter images of the entire body can be obtained with a single
breath-hold. High-resolution 3D CT angiography can be performed to
image virtually any arterial system, including the brain (circle of
Willis), coronary arteries, hands, and feet.
