Use of NMR-tomography in general and differential diagnosis of brain diseases, diseases of internal organs (liver, galbludder, pancreas, kidneys, adrenal glands, organs small pelvis, thoracic cavity, soft tissues and bone-jopint system) is shown. Physical-technical bases of getting NMR image are presented. Problems of reproducibility, accuracy and interpretation of investigation results are discussed. 253 refs.; 1 tab.