chapter  28
24 Pages

Computed Tomographic Arteriography of the Upper and Lower Extremities

ByJeffrey C Hellinger

Following the introduction of computed tomographic (CT)

angiography in the early 1990s,1 applications were limited

for evaluating the upper and lower extremity vasculature.

This was directly related to the length of the complete upper

and lower extremity trees and the thin sections required

to robustly display the proximal (8-12 mm diameter), mid

(5-7 mm diameter), and distal (1.5-4 mm diameter) arteries

and veins. Slow scan speeds with single detector-row CT

scanners precluded thin section acquisitions in the entire

Z-axis of the extremity vascular systems. While CT angiog-

raphy (CTA) was embraced for aortic, pulmonary, head and

neck, mesenteric, and renal peripheral vascular applications,

catheter angiography remained the diagnostic modality of

choice for the upper and lower extremity vasculature.