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US 6,636,041 B2Granted
Magnetic resonance apparatus having an optical fiber with a Bragg grating for measuring mechanical deformations
AssigneeSiemens Aktiengesellschaft
InventorsWinfried Arz, Matthias Drobnitzky
Life of this patent
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Abstract
A magnetic resonance apparatus has at least one section of an optical fiber with at least one Bragg grating having a Bragg wavelength. The Bragg grating is arranged with respect to the magnetic resonance apparatus so that at least one deformation of the magnetic resonance apparatus can be acquired.
Claims74
A magnetic resonance apparatus comprising:
- a magnetic resonance data acquisition apparatus having a non-articulated cast component subject to mechanical deformation;
- and
- an optical fiber having an optical fiber section with a Bragg grating therein with a Bragg wavelength associated therewith, said optical fiber section being cast together with said cast component so that said deformation of said cast component alters said Bragg wavelength to allow measurement of said deformation.
A magnetic resonance apparatus comprising:
- a magnetic resonance data acquisition apparatus having an apparatus component subject to mechanical deformation, said apparatus component having a surface;
- and
- an optical fiber having an optical fiber section in which a Bragg grating is disposed, said Bragg grating having a Bragg wavelength associated therewith and said optical fiber section being disposed proximate to said surface of said apparatus at said surface component so that said deformation of said apparatus component alters said Bragg wavelength to allow measurement of said deformation.
A magnetic resonance apparatus comprising;
- a magnetic resonance data acquisition apparatus having a hollow-cylindrical gradient coil system subject to mechanical deformation, said gradient coil system having a longitudinal direction, a circumferential direction and a radial direction;
- and
- an optical fiber having an optical fiber section in which a Bragg grating, having a Bragg wavelength associated therewith, is disposed, said optical fiber section being mounted relative to said gradient coil system so that deformation of said gradient coil system alters said Bragg wavelength, and said optical fiber section being oriented in one of said longitudinal direction, said circumferential direction and said radial direction to allow measurement of said deformation.
A magnetic resonance apparatus comprising:
- a magnetic resonance data acquisition apparatus having a gradient coil system with an outer cylinder surface and an inner cylinder surface, said gradient coil system being subject to mechanical deformation;
- and
- an optical fiber having an optical fiber section in which a Bragg grating, having a Bragg wavelength associated therewith, is disposed, said optical fiber section being mounted relative to a surface of said gradient coil system, selected from the group consisting of said outer cylinder surface and said inner cylinder surface, so that deformation of said gradient coil system alters said Bragg wavelength to allow measurement of said deformation.
Dependencies are inferred from the claim text.