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Bypassing a bubble in the brain Add to ...

Toronto Western's Michael Tymianski uses a laser system to perform bypass surgery in the brain, a procedure that doesn't require cutting off the blood supply to the artery that is being repaired and dramatically lessens the risk of a stroke during surgery. He uses it to treat complicated brain tumours and aneurysms, a bulge or ballooning in the wall of an artery. It can involve one artery, as shown below, or two.

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