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Fig. 4B. —Bar graphs show percentage of signal increase resulting from contrast agent in each acquisition for hand displayed in Figure 3A,3B,3C. Distal soft-tissue percentage of signal increase of individual digits at various times after injection of contrast agent. Each group shows, left to right, digits 1, 2, 3, 4, and 5. Venous enhancement and enhancement of AVM were always greater than arterial enhancement. Delayed and reduced enhancement of digits is seen compared with healthy hand (Figs. 1A,1B,1C,1D and 2A,2B).

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