Victoria Link Limited

Benjamin John Parkinson

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 () 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 () in a generally tapering arrangement. The magnet also has an additional group of coils (). A first group of coils () overlaps the additional group of coils (), such that a bottom portion (″) of the additional group of coils () is positioned closer to the patient end of the magnet than a top portion (′) of the first group of coils ().

MRI magnet and apparatus

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

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Belmont, New Zealand

Benjamin John Parkinson