'Radioisotope section scan versus E.M.I. Scan' 'Radioisotope section scan versus E.M.I. Scan' was written by W.I Keyes, Department of Medical Physics, University of Aberdeen and published as a letter to the editor in the British Journal of Radiology, Vol. 48, 1975. There are two copies of this article, one is a photocopy, the other is an offprint with a handwritten note "with compliments W.I. Keyes". 1975