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US 12,681,114 B2Granted
Gradient coil unit with separately drivable conductor pattern pairs
AssigneeSiemens Healthineers AG
InventorsAndreas Krug, Simon Bauer, Stefan Stocker, Peter Dietz
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Abstract
The disclosure relates to a gradient coil unit comprising a hollow cylindrical primary coil longitudinally surrounding a cylinder axis and designed to generate a magnetic field gradient in a first spatial direction, which primary coil comprises two primary conductor pattern pairs. Each primary conductor pattern pair of the two primary conductor pattern pairs is separately drivable, spans one half of the primary coil in each case, and comprises two spiral conductor patterns, which are formed by an electrical conductor implemented as a hollow conductor.
Claims20
Gradient coil circuitry, comprising:
- a hollow cylindrical primary coil longitudinally surrounding a cylinder axis and configured to generate a magnetic field gradient in a first spatial direction,
- wherein the hollow cylindrical primary coil comprises:
- two primary conductor pattern pairs, each one of the two primary conductor pattern pairs being driven separately and spanning one half of the hollow cylindrical primary coil;
- and
- two spiral conductor patterns that are formed by an electrical conductor configured as a hollow conductor, and
- wherein a portion of the electrical conductor of one of the two primary conductor pattern pairs corresponds to a spiral conductor pattern of the two spiral conductor patterns that is (i) subdivided into two serially interconnected sections, and (ii) arranged spirally in turns such that two adjacent turns of the electrical conductor correspond to two mutually different sections.
3 more elements
A gradient system, comprising:
- a hollow cylindrical primary coil longitudinally surrounding a cylinder axis and configured to generate a magnetic field gradient in a spatial direction, the hollow cylindrical primary coil comprising:
- two primary conductor pattern pairs, each one of the two primary conductor pattern pairs being driven separately and spanning one half of the hollow cylindrical primary coil;
- and
- two spiral conductor patterns that are formed by an electrical conductor configured as a hollow conductor;
- a first gradient amplifier;
- and
- a second gradient amplifier,
- wherein the first gradient amplifier is coupled to a first one of the two primary conductor pattern pairs,
- wherein the second gradient amplifier is coupled to a second one of the two primary conductor pattern pairs, and
- wherein a portion of the electrical conductor of one of the two primary conductor pattern pairs corresponds to a spiral conductor pattern of the two spiral conductor patterns that is (i) subdivided into two serially interconnected sections, and (ii) arranged spirally in turns such that two adjacent turns of the electrical conductor correspond to two mutually different sections.
7 more elements
A magnetic resonance apparatus, comprising:
- a main magnet;
- radio frequency (RF) antenna circuitry;
- gradient coil circuitry, comprising a hollow cylindrical primary coil longitudinally surrounding a cylinder axis and configured to generate a magnetic field gradient in a spatial direction, the hollow cylindrical primary coil comprising (i) two primary conductor pattern pairs, each one of the two primary conductor pattern pairs being driven separately and spanning one half of the hollow cylindrical primary coil, and (ii) two spiral conductor patterns that are formed by an electrical conductor configured as a hollow conductor;
- and
- a gradient controller coupled to the gradient coil circuitry and configured to control the gradient coil circuitry to generate a magnetic field gradient in the spatial direction,
- wherein a portion of the electrical conductor of one of the two primary conductor pattern pairs corresponds to a spiral conductor pattern of the two spiral conductor patterns that is (i) subdivided into two serially interconnected sections, and (ii) arranged spirally in turns such that two adjacent turns of the electrical conductor correspond to two mutually different sections.
3 more elements
Dependencies are inferred from the claim text.