Using the technique of nuclear magnetic resonance nmr mr mri the first images displaying pathology in humans were published in 1980 1 since then there has been a rapid extension in the use of the technique with an estimated 225 machines in use in the usa at the end of 1985 2 considerable enthusiasm has been expressed for this new imaging technique 3 although awareness of its high cost in the present economic climate has led to reservations being expressed in other quarters 2 the . Using the technique of nuclear magnetic resonance nmr mr mri the first images displaying pathology in humans were published in 19801 since then there has been a rapid extension in the use of the technique with an estimated 225 machines in use in the usa at the end of 19852 considerable enthusiasm has been expressed for this new imaging technique3 although awareness of its high cost in the present economic climate has led to reservations being expressed in other quarters2 . If the address matches an existing account you will receive an email with instructions to reset your password. Mri is a medical application of nuclear magnetic resonance nmr which can also be used for imaging in other nmr applications such as nmr spectroscopy while the hazards of ionizing radiation are now well controlled in most medical contexts citation needed an mri may still be seen as a better choice than a ct scan