Abstract: An asymmetric magnet for use in performing MRI of a patient's head. The magnet has a patient end. The magnet provides an offset imaging volume (35) in a recess with an isocentre that is positioned closer to the patient end than an opposite end. The magnet has at least three groups of coils (44, 45, 46) in a generally tapering arrangement. The magnet also has an additional group of coils (47). A first group of coils (44) overlaps the additional group of coils (47), such that a bottom portion (47?) of the additional group of coils (47) is positioned closer to the patient end of the magnet than a top portion (44?) of the first group of coils (44).

Abstract: A polymer composition for impregnating a high temperature superconductor (HTS) coil, the composition comprising: a polymer resin, a plurality of particles of a first filler material, and a plurality of particles of a second filler material; wherein the median particle size of the second filler material is less than the median particle size of the first filler material. The polymer composition may be used to prepare a polymer impregnated HTS coil having a predetermined turn-to-turn spacing. A property of the polymer composition may also be modified, for example, the coefficient of thermal contraction and/or resistivity of the composition. Also disclosed is a polymer impregnated HTS coil and a method for preparing the coil.

Abstract: The invention relates to a stabilising head support for use by a patient during MRI scanning. The head support includes a shell and an inflatable bladder that is located at least partially within the shell. During use, the shell is located within an MRI magnet and the bladder is inflated about the patients head to help hold the head steady during imaging.

Abstract: A magnet (7) for use in an apparatus (1) for performing magnetic resonance imaging (MRI) of a patient's head is an asymmetric magnet (7) comprising a plurality of coils (45, 46, 47) that are aligned along a cylindrical axis (29) to provide a magnetic field on the cylindrical axis (29). The magnet (7) has a patient end (23) arranged to be positioned adjacent or against a patient's shoulders with the patient's shoulders outside the magnet (7). The magnet has a recess (27) for receipt of the patient's head and extending into the magnet (7) from the patient end (23). The magnet (7) is configured to provide an imaging volume (35) that is positioned along the cylindrical axis (29) of the magnet (7) in the recess (27), and at least a major part of the imaging volume (35) has a substantially linear non-zero magnetic field gradient along the cylindrical axis (29).

Abstract: An asymmetric magnet for use in performing MRI of a patient's head. The magnet has a patient end. The magnet provides an offset imaging volume (35) in a recess with an isocentre that is positioned closer to the patient end than an opposite end. The magnet has at least three groups of coils (44, 45, 46) in a generally tapering arrangement. The magnet also has an additional group of coils (47). A first group of coils (44) overlaps the additional group of coils (47), such that a bottom portion (47?) of the additional group of coils (47) is positioned closer to the patient end of the magnet than a top portion (44?) of the first group of coils (44).

Abstract: A magnet (7) for use in an apparatus (1) for performing magnetic resonance imaging (MRI) of a patient's head is an asymmetric magnet (7) comprising a plurality of coils (45, 46, 47) that are aligned along a cylindrical axis (29) to provide a magnetic field on the cylindrical axis (29). The magnet (7) has a patient end (23) arranged to be positioned adjacent or against a patient's shoulders with the patient's shoulders outside the magnet (7). The magnet has a recess (27) for receipt of the patient's head and extending into the magnet (7) from the patient end (23). The magnet (7) is configured to provide an imaging volume (35) that is positioned along the cylindrical axis (29) of the magnet (7) in the recess (27), and at least a major part of the imaging volume (35) has a substantially linear non-zero magnetic field gradient along the cylindrical axis (29).