Imaging Tests for PAD

Imaging tests for PAD

Ultrasound CT Angiogram MR Angiogram Contrast Angiogram
Radiation? No Yes No Yes
Injected Dye? No Yes
(iodine)
Yes
(gadolinium*)
Yes
<iodine)></iodine)>
Magnetic Field? No No Yes No
Invasive? No No No Yes
Enclosed Space? No No Yes No
Time Up to 2 hours 30 min or less Up to 1 hour 30 to 45 min
Accuracy Slightly less accurate than other tests, Less reliable in lower legs More detailed than ultrasound and MRA, Less established than MRA More detailed than ultrasound, Poses risk in women with metal implants (pacemaker, ICD) Most accurate but carries risks
*Less likely to cause an allergic reaction or kidney damage than iodine dye, but still carries risks

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