Differentiating senile dementia of alzeimer type and multi-infarct dementia by proton NMR imaging Letter to the Lancet entitled 'Differentiating senile dementia of alzeimer type and multi-infarct dementia by proton NMR imaging' by J.A.O.Besson, F.M.Corrigan, E. Iljon Foreman, G.W.Ashcroft, *L.M.Eastwood and **F.W.Smith, Department of Mental Health, Royal Cornhill Hospital *Department of Bio-Medical Physics, University of Aberdeen and **Department of Nuclear Medicine, Aberdeen Royal Infirmary. Published in The Lancet, 1 October 1983. Q1-635. This copy is a photocopy. 1 October 1983