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Figure 5


Fig. 5. (A) Time-of-flight magnetic resonance image (MRI) from dolphin WEN demonstrating anterior blood flow through arteries of the brain outlined by the box. (B) Fused MRI and SPECT images from co-registered scans made in the same dolphin. The colored region corresponds to a reduction in blood flow; the color bar indicates the relative degree of blood flow reduction with red indicating maximum reductions in blood flow. The yellow arrow indicates the central venous sinus. The red arrows indicate the homolog cerebral artery on the right side of the brain that does not show blood flow reduction. Registration, image analysis and fusion were performed with ANALYZE.





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