Abstract: A magnetic resonance imaging apparatus includes a high-frequency coil and a coil supporting unit. The high frequency coil is disposed inside a gradient coil and that generates a high-frequency magnetic field in a static magnetic field. The coil supporting unit is formed with a substantially cylindrical shape and that supports the high-frequency coil. The coil supporting unit has a certain range including a magnetic field center and formed in parallel with an axial direction. Both ends of the coil supporting unit each have an internal circumference greater than the internal circumference of the certain range.

Abstract: A magnetic resonance imaging apparatus includes: a magnetostatic field magnet formed in the shape of a substantially circular cylinder; a gradient coil formed in the shape of a substantially circular cylinder on the inside of the magnetostatic field magnet; a cylindrical part that is formed in the shape of a substantially circular cylinder on the inside of the gradient coil and includes at least one selected from a sound absorbing material layer and a sound blocking material layer; and a ring part that is substantially ring-shaped, covers the space formed between the magnetostatic field magnet and the cylindrical part on at least one end face of a magnet structure being formed in the shape of a substantially circular cylinder and including the magnetostatic field magnet, the gradient coil, and the cylindrical part, and includes at least one selected from an sound absorbing material layer and a sound blocking material layer.

Abstract: A magnetic resonance imaging apparatus includes: a magnetostatic field magnet that is formed in the shape of a cylinder and generates a magnetostatic field in a space inside the cylinder; a gradient coil that is formed in the shape of a cylinder, is disposed in the cylinder of the magnetostatic field magnet, and applies a gradient magnetic field to the magnetostatic field; a bore tube that is formed in the shape of a cylinder and is disposed in the cylinder of the gradient coil; and an elastic member that is loop-shaped and hollow, is disposed in at least one selected from: a space between an inner circumferential side of the magnetostatic field magnet and an outer circumferential side of the gradient coil; and a space between an inner circumferential side of the gradient coil and an outer circumferential side of the bore tube, and thereby seals the space hermetically.

Abstract: In one embodiment, a gradient coil supporting implement includes three bearings and a mounting main body. At least one of the three bearings is a spherical bearing. Shafts of these bearings are fixed to a static magnetic field magnet of an MRI apparatus. One end side of the mounting main body is fixed to an outer periphery side of an end face of the static magnetic field magnet, at one position via one of the bearings. The other end side of the mounting main body is fixed to an inner periphery side of the end face of the static magnetic field magnet, at two positions via the other two bearings. The mounting main body supports the gradient magnetic field coil unit (installed inside the static magnetic field magnet) in the horizontal direction by being partially made in contact with the gradient magnetic field coil unit.

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes a gantry and a movable bed. A magnet, a gradient coil, and a radio frequency coil are built in the gantry. The movable bed is configured to be positioned to the gantry by a positioning mechanism having different structures at different positions in a longitudinal direction of the bed.

Abstract: A magnetic resonance imaging apparatus according to the present embodiments comprises a gantry device, a front light source and an exterior casing of the gantry device. The gantry device has a bore serving as a space where a magnetic resonance image is captured, with the gantry device being configured to acquire, when a subject placed on a couchtop has been moved into the bore by a couch device configured to move the couchtop, a magnetic resonance signal from the subject. The front light source is provided in surroundings of a front opening, with the front opening being an opening of the bore positioned at front of the couch device. The exterior casing of the gantry device, with a portion of the exterior casing being illuminated by light emitted from the front light source, is made of a transparent or translucent material.

Abstract: According to one embodiment, a top plate for a magnetic resonance imaging apparatus includes a placing plate and a supporting part. The placing plate is configured to place an object. The supporting part is provided to the placing plate at a position higher than a position of the placing plate. Further, a frame for a top plate set of a magnetic resonance imaging apparatus according to an embodiment includes a first supporting part and a second supporting part. The first supporting part is configured to support a top plate at a first supporting position. The second supporting part is configured to support the top plate at a second supporting position higher than the first supporting position. Further, a magnetic resonance imaging apparatus according to an embodiment includes the top plate, a bed and an imaging unit.

Abstract: According to one embodiment, an MRI apparatus (20) obtains a nuclear magnetic resonance signal from an RF coil device (100) which detects the nuclear magnetic resonance signal emitted from an object (P), and this MRI apparatus (20) includes a first radio communication unit (200), a second radio communication unit (300) and an image reconstruction unit (56). The first radio communication unit (200) obtains the nuclear magnetic resonance signal detected by the RF coil device (100), and wirelessly transmits the nuclear magnetic resonance signal in a digitized state via an induced electric field. The second radio communication unit (300) receives the nuclear magnetic resonance signal wirelessly transmitted from the first radio communication unit (200) via the induced electric field. The image reconstruction unit (56) reconstructs image data of the object (P) based on the nuclear magnetic resonance signal received by the second radio communication unit (300).

Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a static magnetic field magnet, a gradient coil, a bore tube and a sealed space forming unit. The gradient coil is formed to be approximately cylindrical, arranged in a cylinder of the static magnetic field magnet, and adds a gradient magnetic field to the static magnetic field. The bore tube is formed to be approximately cylindrical and arranged in the cylinder of the gradient coil. The sealed space forming unit forms a sealed space enclosing the gradient coil between an inner circumferential side of the static magnetic field magnet and an outer circumferential side of the bore tube. At least a part of at least one of the side ends of the gradient coil does not make contact with the sealed space.

Abstract: A radio frequency coil unit includes a chassis which has a tubiform inner cylinder, a plurality of flanges arranged apart from each other, each of the plurality of flanges provided in a state of protruding outwards from the inner cylinder while in contact with a whole outer circumference surface of the inner cylinder, and a tubiform external cylinder in which each of the plurality of flanges is provided in a state of contacting an inner surface thereof, wherein the chassis forms a flow path of cooling air as a space surrounded by the inner cylinder, the plurality of flanges and the external cylinder, and a radio frequency coil which is mounted on the inner cylinder or the external cylinder to be positioned in the space surrounded by the inner cylinder, the plurality flanges and the external cylinder.

Abstract: A magnetic resonance apparatus includes a static field magnet, a gradient field coil, a cover which forms, inside the static field magnet and the gradient field coil, an internal space in which a bed top and a subject placed on the bed top are to be inserted, a radio frequency coil unit which includes a cylindrical base portion and first electronic elements and second electronic elements and is placed in the internal space, a first flow path which is formed between the base portion and the cover to cool the first electronic elements, a second flow path which is formed between the base portion and the cover and communicates with the first flow path to cool the second electronic elements, and a cooling unit which cools the radio frequency coil unit by generating a cooling gas flow flowing from the first flow path to the second flow path.

Abstract: When an RF coil in a magnetic resonance imaging system includes a plurality of conductive members and circuit elements connected to the conductive members, at least part of each of the conductive members is formed to a thickness so as to dissipate heat generated from the circuit elements. Moreover, the magnetic resonance imaging system is configured to include a cooling unit that circulates cooling air over the surfaces of the circuit elements provided in the RF coil.

Abstract: An MRI apparatus has a gantry, a bed and a lighting unit collective including a plurality of lighting units. The gantry accommodates a static field magnet configured to generate a static field, a gradient coil configured to generate a gradient magnetic field, and an RF coil configured to transmit or receive an RF pulse as well as having an opening into which a person is inserted. The bed has a removable table-top for an inside and an outside of the opening. The lighting unit group is disposed at at least one of an inside position of the opening and an outside position from which an inside of the opening can be lighted so that the lighting units can carry out lighting such that an amount of emitting light increases bit by bit from a bedside to a counter bedside opposite to the bedside across the opening.

Abstract: A radio frequency coil unit includes a chassis which has a tubiform inner cylinder, a plurality of flanges arranged apart from each other, each of the plurality of flanges provided in a state of protruding outwards from the inner cylinder while in contact with a whole outer circumference surface of the inner cylinder, and a tubiform external cylinder in which each of the plurality of flanges is provided in a state of contacting an inner surface thereof, wherein the chassis forms a flow path of cooling air as a space surrounded by the inner cylinder, the plurality of flanges and the external cylinder, and a radio frequency coil which is mounted on the inner cylinder or the external cylinder to be positioned in the space surrounded by the inner cylinder, the plurality flanges and the external cylinder.

Abstract: A magnetic resonance imaging apparatus has a static field magnet, gradient coils, a gantry including an opening and storing the static field magnet the gradient coils, a bed structure for advancing and retreating a table-top, on which an object can be placed, with respect to the opening, a lower coil formed by a radio frequency coil disposed below the table-top, and a movement control unit configured to control the lower coil to be movable.

Abstract: A magnetic resonance imaging apparatus comprising: a magnet configured to form a static magnetic field in an imaging area; a cylindrical structure having a guide; a radio frequency coil configured to receive a nuclear magnetic resonance signal generated by transmitting a radio frequency signal into a object set in the static magnetic field; and a radio frequency coil drive structure configured to adjust a distance between the radio frequency coil and a body surface of the object by using a moving structure configured to move along with the guide, a wire configured to move the moving structure and a motor connected to the wire.

Abstract: A gradient magnetic field coil unit includes a main coil layer that has a main coil for generating a gradient magnetic field and is formed in a substantially cylindrical shape. A shield coil layer that is attached to the outside of the main coil layer and has a shield coil for generating a magnetic field which shields a leakage magnetic field from the main coil. A cooling layer is attached between the main coil layer and the shield coil layer and has a plurality of flow paths for refrigerant. The flow paths are arranged in a substantially circumferential shape with the central axis of the main coil layer set to the center thereof, and a plurality of shim tray holding sections which hold a shim tray for a magnetic body.

Abstract: A magnetic resonance imaging apparatus includes a gantry with a gradient coil which applies a gradient magnetic field to a subject in a static magnetic field, a bed which slides a top board in a longitudinal direction of the top board with the subject placed thereon, a high-frequency coil which applies the gradient magnetic field and a high-frequency pulse signal to the subject, and detects a magnetic resonance signal emitted from the subject, and a damping member which damps noise which occurs when the gradient coil is driven, or a support member which supports the gradient coil, the damping member or the support member providing an asymmetrical structure with respect to a plane perpendicular to the longitudinal direction.

Abstract: When an RF coil in a magnetic resonance imaging system includes a plurality of conductive members and circuit elements connected to the conductive members, at least part of each of the conductive members is formed to a thickness so as to dissipate heat generated from the circuit elements. Moreover, the magnetic resonance imaging system is configured to include a cooling unit that circulates cooling air over the surfaces of the circuit elements provided in the RF coil.

Abstract: A magnetic resonance apparatus includes a static field magnet, a gradient field coil, a cover which forms, inside the static field magnet and the gradient field coil, an internal space in which a bed top and a subject placed on the bed top are to be inserted, a radio frequency coil unit which includes a cylindrical base portion and first electronic elements and second electronic elements and is placed in the internal space, a first flow path which is formed between the base portion and the cover to cool the first electronic elements, a second flow path which is formed between the base portion and the cover and communicates with the first flow path to cool the second electronic elements, and a cooling unit which cools the radio frequency coil unit by generating a cooling gas flow flowing from the first flow path to the second flow path.