A rising number of Canadian facilities are using mobile brain scanners to help patients, by offering MRIs mid-surgery in hospital or diagnosing stroke right on the roadside. So what's the future of this game-changing technology? When Dave Evans underwent surgery to remove a pituitary gland tumour last October, his surgical team worked within an area roughly the size of a thumbnail. In that tiny space near the base of Evans’s brain, neurosurgeon Dr. Neil Duggal and other clin... [7745 chars]