Leif Salford celebrated his 80th birthday on December 7. An emeritus professor at Sweden’s Lund University and a noted neurosurgeon, Salford spent much of his career treating patients with brain tumors. Over the years, he became frustrated as, all too often, he was unable to save them with a scalpel.
In 1987, Salford came across a paper in Neuroscience Letters from a group at the University of Western Ontario, who had found that rats undergoing the equivalent of a routine MRI scan showed changes in their blood-brain barrier. The BBB is a membrane that keeps potentially toxic substances in the bloodstream from getting into the brain. It’s not a perfect barrier —it can leak. The Canadians reported that something about the electromagnetic exposures during the MRI scan had increased the permeability of the rats’ BBB. It had become more porous.
If microwaves used in the MRI were responsible, Salford thought....
