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US 11,959,989 B2Granted
Apparatus and method for magnetic resonance imaging with electropermanent magnets
AssigneeWeinberg Medical Physics LLC
InventorsIrving Weinberg, Oleg Udalov
Life of this patent
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Abstract
Apparatuses and methods for MRI take advantage of properties of electropermanent magnet module arrays to change the magnetic state of their magnetizable material during a spin echo.
Claims12
An apparatus for producing magnetic resonance images of an object of interest, the apparatus comprising:
- one or more arrays of electropermanent magnets in a vicinity of the object of interest,
- one or more sensors of electromagnetic radiation, and
- circuitry configured to supply power to, and to control, the one or more arrays and sensors to change magnetic configurations of the one or more arrays,
- wherein magnetic configurations are produced by the one or more electropermanent arrays, and wherein a computer changes the magnetic configurations during one or more spin echoes from a first magnetic field having a static field and a first encoding gradient to a second magnetic field which is a complete inversion of the first magnetic field, and
- wherein the computer implements net spin magnetization by changing the magnetic configurations during a spin echo using the one or more electropermanent magnet arrays in the vicinity of the object of interest.
2 more elements
A method for producing magnetic resonance images comprising:
- providing one or more arrays of electropermanent magnets in a vicinity of an object of interest, one or more sensors of electromagnetic radiation, and circuitry configured to supply power to, and to control, the one or more arrays and sensors,
- producing and changing a magnetic configuration of the one or more arrays from a first magnetic field having a static field and a first encoding gradient to a second magnetic field which is a complete inversion of the first magnetic field to produce echoes, and
- reconstructing an image based on the echoes, and
- wherein a net spin magnetization is implemented by changing magnetic configurations during a spin echo using one or more electropermanent magnet arrays in the vicinity of the object of interest.
1 more element
Dependencies are inferred from the claim text.