Magnetic resonance imaging apparatus capable of automatically determining RF coil positions
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorsYoshio Machida, Nobuyasu Ichinose
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Abstract
A magnetic resonance imaging apparatus includes an array coil in which a plurality of element coils are arranged to receive magnetic resonance signals from a subject, a calculation unit which calculates projection data for the element coils regarding an arrangement direction of the plurality of element coils on the basis of the plurality of magnetic resonance signals received by the plurality of element coils, and a determination unit which determines the positions of the plurality of element coils or the position of the array coil on the basis of the projection data for the plurality of element coils.
Claims29
A magnetic resonance imaging (MRI) apparatus comprising:
- an array RF coil in which a plurality of element RF coils are arranged along an array axis to receive magnetic resonance signals from a subject;
- a calculation unit which calculates projection data for each of the element coils along said array axis based on magnetic resonance signals received by the plurality of element coils;
- and
- a determination unit which determines the positions of each of the plurality of element coils or the position of the array coil using the projection data for itself and others of the plurality of element coils.
A magnetic resonance imaging apparatus comprising:
- an array coil in which a plurality of element coils are arranged to receive magnetic resonance signals from a subject;
- a calculation unit which calculates projection data for the element coils regarding an arrangement direction of the plurality of element coils on the basis of the plurality of magnetic resonance signals received by the plurality of element coils;
- and
- a determination unit which determines the positions of the plurality of element coils or the position of the array coil on the basis of the projection data for the plurality of element coils and known information regarding the arrangement of the plurality of element coils.
A magnetic resonance imaging apparatus comprising:
- an array coil in which a plurality of element coils are arranged to receive magnetic resonance signals from a subject;
- a scan controller which applies gradient magnetic fields with twisters at different strengths in a multispin echo method, and, at the same time, performs a sequence of causing the plurality of element coils to receive the magnetic resonance signals under the application of the plurality of gradient magnetic fields at different strengths;
- a calculation unit which calculates projection data regarding the plurality of element coils on the basis of a particular magnetic resonance signal among the plurality of magnetic resonance signals received under the application of the plurality of gradient magnetic fields;
- and
- a determination unit which determines the positions of each of the plurality of element coils or the position of the array coil on the basis of the projection data for itself and other of the plurality of element coils.
A magnetic resonance imaging apparatus comprising:
- an array coil in which a plurality of element coils are arranged to receive magnetic resonance signals from a subject;
- a movement unit which moves the subject or the array coil;
- a scan controller which performs a sequence causing the plurality of element coils to receive magnetic resonance signals while moving the subject or the array coil by the movement unit;
- a calculation unit which calculates projection data for the element coils regarding an arrangement direction of the plurality of element coils on the basis of the plurality of magnetic resonance signals received by the plurality of element coils;
- and
- a determination unit which determines the positions of each of the plurality of element coils or the position of the array coil on the basis of the projection data for itself and other of the plurality of element coils.
Dependencies are inferred from the claim text.