HOLLOW-CORE TYPE MAGNET FOR NUCLEAR MAGNETIC RESONANCE IMAGE PICK-UP APPARATUS

摘要

PURPOSE:To make it possible to perform the correction of the uniformity degree of a magnetic field, by devising the arrangement and wiring of single coils each formed by single pan cake winding when the mutual wiring of said coils is performed. CONSTITUTION:Two pan cake shaped single coils (a), (b) [wherein the coil (b) is in backside-out state to the coil (a)] are used and superposed so as to be made symmetrical to a Y-axis while one terminals 2a of two coils are connected to each other. The wiring part 21 mutually connecting the coil terminals 2a becomes opposite to the other part in the direction of a current. A pair of thus formed single coils are further superposed on a plurality of other coils on the same axis so as to be connected thereto in series and four coils are arranged at predetermined intervals and these four coils are further connected in series to obtain the magnet for a nuclear magnetic resonance apparatus. Then, by appropriately adjusting the shift angle in the superposition of two similarly wound single pan cake shaped coils, the position of the part 21 coming to a linear shape is shifted and the uniformity degree of a magnetic field can be adjusted.