Proceedings of the British Institute of Radiology Proceedings of the British Institute of Radiology, volume 57, number 682, October 1984 with a paper entitled ' A comparison of brain images obtained with 123I-labelled amphetamine with those obtained using 99Tcm-Pertechnetate, NMR and X-ray CT in patients with intra-cranial tumour or CVA' by H.G.Gemmell, N.T.S. Evans, P.F.Sharp, F.W.Smith and T.Hope, Department of Bio-Medical Physics and Bio-Engineering, University of Aberdeen. This copy is a photocopy. October 1984