Method for local heating by means of magnetic particles
AssigneeKoninklijke Philips Electronics N.V.
InventorBernhard Gleich
Life of this patent
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Abstract
The invention relates to a method as well as to a system for the local heating of a target region of an object by varying the magnetization of magnetic or magnetizable substances. A magnetic field is then generated whose magnetic field strength varies in space in such a manner that a first sub-region (301) of low magnetic field strength and a second sub-region (302) which encloses the first sub-region and has a higher magnetic field strength are formed in the target region. Subsequently, the position in space of the two sub-regions in the target region is varied with a given frequency for so long that the particles are heated to a desired temperature due to frequent variation of the magnetization.
Claims14
A method for the heating of magnetic particles which are present in a target region, which method includes the steps of
- a) generating a magnetic field whose magnetic field strength varies in space in such a manner that a first sub-region (301) having a low magnetic field strength and a second sub-region (302) having a higher magnetic field strength are formed in the target region,
- b) changing the position in space of the two sub-regions in the target region in a nonrotational manner for so long and with such a frequency that the target region is heated.
An arrangement for the heating of magnetic particles which are present in a target region, the arrangement comprising
- a) means for generating a magnetic field whose magnetic field strength varies in space in such a manner that a first sub-region (301) having a low magnetic field strength and a second sub-region (302) having a higher magnetic field strength are formed in the target region,
- b) means for changing the position in space of the two sub-regions in the target region in a nonrotational manner for so long and at such a frequency that the target region is heated.
Dependencies are inferred from the claim text.