According to the World Health Organization, strokes are the second most common cause of death worldwide. Of the 15 million patients annually, one-third die and another third are left with permanent disabilities. A new design for a portable MRI scanner has the potential to make a major impact on those numbers.Medical imaging is essential in diagnosing a stroke. Strokes have two major causes, and the difference is critical. Ischemic strokes are caused by a blockage of blood vessels in the brain, a...