Decreased venous contamination on 3D gadolinium-enhanced bolus chase peripheral mr angiography using thigh compression

AJR. American Journal of Roentgenology
Hong Lei ZhangM R Prince

Abstract

We evaluated the potential for improving bolus chase peripheral MR angiography in patients with fast arterial flow using thigh compression to prevent venous contamination. We performed bolus chase peripheral MR angiography in 32 consecutive patients in whom the travel time for a contrast agent to reach the popliteal artery trifurcation was less than 25 sec. Thigh compression was applied by a tourniquet (n = 13) or blood pressure cuff inflated to 60 mm Hg (n = 19). We compared the results with those of 36 consecutive patients who underwent angiography without thigh compression. The effect of thigh compression on arterial flow and tissue enhancement was assessed in patients with symmetric travel time in both legs by applying compression to one leg during the time-resolved 2D-projection MR angiography with 6 mL of gadolinium. On 3D bolus chase MR angiography, thigh compression was applied bilaterally. Venous contamination on the 3D images of the calf was graded as 0, none; 1, trace; 2, mild; 3, moderate; and 4, severe. Signal-to-noise ratio was measured in the popliteal artery. Thigh compression slowed the arterial travel time by a mean +/- SD of 4.7 +/- 2 sec (p < 0.001) with a blood pressure cuff and 3.1 +/- 1 sec (p < 0.001) wi...Continue Reading

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Citations

Jan 21, 2011·Pediatric Radiology·Terence S HongPaul S Babyn
May 21, 2008·European Radiology·Harald KramerJoerg Barkhausen
Sep 17, 2003·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Kunihiro YoshiokaKouhei Kawazoe
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