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Dual-imaging technique useful before -- and during -- brain surgery

o speech, movement and vision, and diffusion tensor imaging data to map critical “white-matter tracts”—the electrical connections between different parts of the brain that should be avoided during surgery.

Leach says the detailed, easy-to-understand images produced from functional MRI data also help patients understand what is happening in their head and how the surgery will be conducted.

“We can essentially show patients a color-coded picture of their brain and explain to them where their tumor is in relation to areas that control critical functions like expressive speech, movement and vision,” says Leach. “This can help alleviate the patient’s apprehension and help explain what will happen during surgery.”

Although researchers expect this dual-imaging technique to become standard practice across the United States in the next five years, there are still limitations. For example, explains Leach, patients with limited vision may not demonstrate as much activity in the brain in areas linked to vision during functional MRI testing.

“That doesn’t necessarily mean that there’s no function there—it may just be that functional MRI is not sensitive enough to detect it,” says Leach.
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Source:University of Cincinnati


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