An inclined-magnetic-field generating device (3) of an MRI device has at least a pair of conductor rings (5) provided in an arrangement region which is an inside part of the inclined-magnetic-field generating device (3), an end-part side of the inclined-magnetic-field generating device (3) in a homogeneous magnetic field direction, and outside of inclined-magnetic-field generating sources (3a, 3b) in the radial direction of a static-magnetic-field generating source. In a cross-section where an at least single-turn coil pattern (341b) positioned in contiguity in the radial direction of the conductor ring (5) is cut in a plane including the radial direction and the homogeneous magnetic field direction (z-axis direction), a dimension in the radial direction is smaller than a coil pattern (342b) of another turn of the same coil as the at least single turn, and a dimension in the homogeneous magnetic field direction is larger. Through this configuration, an MRI device having an inclined-magnetic-field generating device is provided whereby degradation of a tomographic image can be suppressed while leakage magnetic fields are reduced, and whereby wall thickness is reduced, short axis is lengthened in the case of a horizontal-magnetic-field-type device, and the radial-direction dimension is shortened in the case of a vertical-magnetic-field-type device.Linvention concerne un dispositif de génération de champ magnétique incliné (3) dun dispositif dIRM qui a au moins une paire danneaux conducteurs (5) situés dans une région dagencement qui est une partie intérieure du dispositif de génération de champ magnétique incliné (3), un côté partie dextrémité du dispositif de génération de champ magnétique incliné (3) dans une direction de champ magnétique homogène, et à lextérieur de sources de génération de champ magnétique incliné (3a, 3b) dans la direction radiale dune source de génération de champ magnétique statique. Dans une section transversale dans laquelle au moins un motif
