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The basis of NMR imaging is examined in terms of water and mobile proton content in biological and other systems. Relaxation time effects are also discussed and their importance as additional spin parameters examined. The generalised principles of NMR imaging are discussed using the reciprocal space approach. The timing details of the common imaging methods, together with a number of image examples are presented. A discussion of image quality and imaging time is given. Other matters of practical importance in obtaining good quality images are also considered. Some general comments concerning present day imaging and future perspectives are presented.
P. Mansfield (Fri,) studied this question.