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Figure 4


Figure 4 Plots show average changes in signal intensity (SI) ratio after administration of the intravascular agent in acute and chronic infarctions with inversion recovery gradient echo (top) and T1–turbo spin echo (bottom) magnetic resonance imaging. On both sequences, the intravascular agent significantly increased the SI ratio in acute but not chronic infarctions. *p < 0.01 compared with baseline SI ratio in acute infarctions; +p < 0.01 compared with SI ratio at 10 min; #p < 0.01 SI ratio of chronic compared with acute infarctions.





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