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Figure 4


Fig. 2A —Three-dimensional maximum-intensity-projection images of phantom. Image obtained in arterial phase (A) and image obtained 2 minutes after A (B) show active bleeding from simulated arteries (arrows) that was detected with cardiac output of 4 L/min and mean arterial pressure of 50 mm Hg. Tube on left has 100-µm hole, one in middle has 280-µm hole, and tube on right has no holes. For limitations of this model, see text.