CHEST I 96 11 I JULY, 1989 I Supplement 47S 32 Cohen AM, Creviston S, LiPuma JP, Bryan PJ, et al. Nuclear magnetic resonance imaging of the mediastinum and hila: early impressions of its efficacy. AJR 1983; 141:1163-69 33 Gamsu C, Webb WR, Sheldon P, Kaufman L, et al. Nuclear magnetic resonance imaging of the thorax. Radiology 1983; 147:473-80 34 Cohen AM, Creviston S, LiPuma JP, Bryan PJ, et a...