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Fig. 2. —Arterial and soft-tissue enhancement curves averaged for all patients with compression applied by blood pressure cuff (n = 15) showing right leg with compression (dashed lines) and left leg without compression (solid lines). To correct for temporal differences, we shifted time axis to define 2 sec before contrast arrival at left popliteal artery trifurcation as 0. Note that blood pressure cuff compression delays arterial peak and substantially suppresses background-tissue enhancement for entire duration of imaging. {blacktriangleup} = artery with compression, {blacksquare} = artery without compression, • = tissue with compression, {diamondsuit} = tissue without compression.