A resistive magnet, operating at 1.2 T, intended to magnetic resonance spectroscopy in man was set up and evaluated in the hospital of Chamonix. Drusch S.A. in collaboration with Institut d' Electronique fondamentale built the system with the following characteristics: weight: 12 t, pole diameter: 55 cm, distance between coils: 36 cm. Cooling the magnet was provided by water flowing at 50 l/min. The magnetic field homogeneity was 3 X 10(-7) in a 60 mm diameter sphere. Stability was regulated at +/- 1 mGs. Five correcting circuits were used (X, Y, Z, Z2, XY). For experiments in man useful window was 120 X 20 cm and allowed measurements in brain and limbs. With this type of magnet, 1H, 31P and 23Na NMR spectra equalled in quality those obtained with superconducting magnets which work at a very higher cost.
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