Uniform radio frequency magnetic fields in the body for high field MRI
AssigneeVanderbilt University
InventorsAdam W. Anderson, John Gore
Life of this patent
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Abstract
Methods for operating a magnetic resonance apparatus and systems therefrom are provided. A method includes generating, via a coil former surrounding a subject or object of interest and disposed in the magnetic resonance apparatus, a plurality of field modes external to the subject or object, measuring for each of the plurality of external field modes, an associated internal field produced within the subject or object, generating, via the coil former a combination of external modes to produce a target internal field in the subject or object, and measuring nuclear magnetic resonance signals due to the resulting field from the combination to acquire an image or spectrum of the subject or object.
Claims24
A method for operating a magnetic resonance apparatus, comprising the steps of:
- generating, via a coil former surrounding a subject or object of interest and disposed in the magnetic resonance apparatus, a plurality of external field modes;
- measuring for each of the plurality of external field modes, an associated internal RF magnetic field produced within the subject or object;
- generating, via the coil former, a combination of external modes, using information from the measuring step, to produce a target internal RF magnetic field in the subject or object;
- and
- measuring a nuclear magnetic resonance signal due to the combination of external modes to acquire an image or spectrum of the subject or object.
A magnetic resonance apparatus, comprising:
- an apparatus body comprising a bore and a scanner;
- a coil former disposed in the bore and configured for surrounding a subject or object of interest in the bore;
- and
- a control system coupled to at least the coil former and the apparatus body, wherein the processor comprises a processor and a computer-readable medium having stored thereon a plurality of instructions for causing the processor to perform steps comprising:
- generating, via the coil former, a plurality of external field modes;
- measuring, via the scanner, for each of the plurality of external field modes, an associated internal RF magnetic field produced within the subject or object;
- generating, via the coil former, a combination of external modes, using information from the measuring step, to produce a target internal RF magnetic field in the subject or object;
- and
- measuring, via the scanner, the resulting signal due to the combination of external modes to acquire an image or spectrum of the subject or object.
A non-transitory computer-readable medium, having stored thereon a computer program executable by a computing device for operating a magnetic resonance apparatus, the computer program comprising a plurality of code sections for causing the computing device to perform steps comprising:
- generating, via a coil former surrounding a subject or object of interest and disposed in the magnetic resonance apparatus, a plurality of external field modes;
- measuring for each of the plurality of external field modes, an associated internal RF magnetic field produced within the subject or object;
- generating, via the coil former, a combination of external modes, using information from the measuring step, to produce a target internal RF magnetic field in the subject or object;
- and
- measuring a nuclear magnetic resonance signal due to the combination of external modes to acquire an image or spectrum of the subject or object.
Dependencies are inferred from the claim text.