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Fig. 1A. —67-year-old man with claudication. Time-resolved
2D-projection MR angiogram obtained with blood pressure cuff on right thigh
shows contrast travel time of 16 sec (s) to left popliteal artery trifurcation
without compression and travel time of 24 sec to right popliteal artery
trifurcation with compression. Note at 22 sec, muscle enhancement is seen on
left side but not on right side with thigh compression. At 60 sec, right calf
shows much less soft-tissue enhancement than left calf.
