Abstract: NMR apparatus for achieving construction of improved patient access desirably including a generally C-shaped yoke, and devices for reducing the field asymmetry caused by the C-shaped yoke.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: A magnetic resonance imaging (MRI) magnet in combination with a mobile patient-positioning device, including a patient support and a method of using same for positioning patients for MRI scanning. The patient support is rotatable through a range of orientations from a horizontal to a vertical position, including being lockable at any oblique angle with respect to the horizontal. The patient disposed on the patient-positioning device in a predetermined orientation can then be moved horizontally into and out of a patient-receiving space in the MRI magnet at the predetermined angle or orientation. A preferred embodiment includes a plurality of patient-positioning devices in which a series of patients can be placed in a ready state while one patient is within the patient-receiving space. As an alternative embodiment, the patient may be moved vertically into position for MRI scanning by way of an elevator which is actuatable from the floor below the patient receiving space.

Abstract: A magnetic resonance imaging (MRI) magnet in combination with a mobile patient-positioning device, including a patient support and a method of using same for positioning patients for MRI scanning. The patient support is rotatable through a range of orientations. The patient disposed on the patient-positioning device in a predetermined orientation can then be moved horizontally into and out of a patient-receiving space in the MRI magnet at the predetermined angle or orientation. A preferred embodiment includes a plurality of patient-positioning devices in which a series of patients can be placed in a ready state while one patient is within the patient-receiving space. As an alternative embodiment, the patient may be moved vertically into position for MRI scanning by way of an elevator which is actuatable from the floor below the patient receiving space. This elevator also may be used in combination with the patient-positioning device.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: A magnetic resonance imaging (MRI) magnet in combination with a mobile patient-positioning device, including a patient support and a method of using same for positioning patients for MRI scanning. The patient support is rotatable through a range of orientations from a horizontal to a vertical position, including being lockable at any oblique angle with respect to the horizontal. The patient disposed on the patient-positioning device in a predetermined orientation can then be moved horizontally into and out of a patient-receiving space in the MRI magnet at the predetermined angle or orientation. A preferred embodiment includes a plurality of patient-positioning devices in which a series of patients can be placed in a ready state while one patient is within the patient-receiving space. As an alternative embodiment, the patient may be moved vertically into position for MRI scanning by way of an elevator which is actuatable from the floor below the patient receiving space.

Abstract: A magnetic resonance imaging (MRI) magnet in combination with a mobile patient-positioning device, including a patient support and a method of using same for positioning patients for MRI scanning. The patient support is rotatable through a range of orientations. The patient disposed on the patient-positioning device in a predetermined orientation can then be moved horizontally into and out of a patient-receiving space in the MRI magnet at the predetermined angle or orientation. A preferred embodiment includes a plurality of patient-positioning devices in which a series of patients can be placed in a ready state while one patient is within the patient-receiving space. As an alternative embodiment, the patient may be moved vertically into position for MRI scanning by way of an elevator which is actuatable from the floor below the patient receiving space. This elevator also may be used in combination with the patient-positioning device.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: A magnetic resonance imaging magnet for examining a patient comprises ferromagnetic pole pieces defining a patient-receiving gap for examining a patient. Coil assemblies for producing a magnetic field include at least one coil mounted adjacent to at least one thermally conductive member.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: NMR apparatus for achieving construction of improved patient access. Facilities and methods of mobile and fixed site scanning.

Abstract: NMR apparatus for achieving construction of improved patient access. Faciliites and methods for mobile and fixed site NMR scanning.

Abstract: A magnet for use in medical magnetic resonance studies and having a pair of ferromagnetic pole pieces supported by a ferromagnetic yoke which establishes a flux return path. columns of the yoke are configured to maintain the magnetic field within the columns approximately constant in every cross section of the columns and to maximize access to the magnet gap.

Abstract: A magnet for use in medical magnetic resonance studies and having a pair of ferromagnetic pole pieces supported by a ferromagnetic yoke which establishes a flux return path. Columns of the yoke are configured to maintain the magnetic field within the columns approximately constant in every cross section of the columns and to maximize access to the magnet gap.

Abstract: A medical NMR scanner having a primary field magnet assembly is disclosed. The scanner includes a ferromagnetic frame defining a patient-receiving space adapted to receive a human body. It also includes a pair of opposed polar regions aligned on a polar axis. The polar regions are disposed on opposite sides of the patient-receiving space. Structure including either electrical windings or a permanent magnet is provided in each of the polar regions for producing a magnetic field within the patient-receiving space. Windings positioned in proximity to each of the polar regions are provided for producing gradients in the magnetic field, when energized. A plurality of ferromagnetic elements positioned in side-by-side relation to one another in each of the polar regions is provided for limiting eddy current generation in the polar regions when the gradient producing auxiliary coils are energized. Each of the ferromagnetic elements has its shortest dimension oriented generally perpendicular to the polar axis.