<classify> Wɔ afe 1970 mu no, Raymond Damadian, a ɔyɛ oduruyɛfo ne nhwehwɛmu ho nyansapɛfo, huu nea enti a wɔde twebo ho dede ho mfonini yɛ adwinade a wɔde yɛ nyarewa mu nhwehwɛmu.  <topic>: sciencetechnology 