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Arrangement and method for influencing and/or detecting magnetic particles in a region of action

A technology of active area and magnetic particles, applied in the directions of diagnostic recording/measurement, application, medical science, etc., can solve the problems of expensive, increased cost of known equipment, large size, etc., to achieve low additional noise, easy adjustment, and low series resistance. Effect

Active Publication Date: 2009-10-21
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Description
  • Claims
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Problems solved by technology

The use of passive filter stages adds a lot of cost to known devices; since high power is often involved and high quality filters are often required, such known devices become bulky and expensive

Method used

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  • Arrangement and method for influencing and/or detecting magnetic particles in a region of action
  • Arrangement and method for influencing and/or detecting magnetic particles in a region of action
  • Arrangement and method for influencing and/or detecting magnetic particles in a region of action

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Embodiment Construction

[0034] The present invention will be described with respect to particular embodiments and with reference to certain drawings but the invention is not limited thereto but only by the claims. The drawings described are only schematic and not restrictive. In the drawings, the size of some elements may be exaggerated and not drawn on scale for illustrative purposes.

[0035] Where an indefinite or definite article is used when referring to a singular noun eg "a", "the", this includes plurals of this noun unless otherwise stated otherwise.

[0036] Furthermore, the terms first, second, third etc. in the description and claims are used to distinguish between similar elements and not necessarily to describe a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

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Abstract

An arrangement for influencing and / or detecting magnetic particles, a method for adjusting such an arrangement and a method for influencing and / or detecting magnetic particles in a region of action isdisclosed, which arrangement comprises selection means for generating a magnetic selection field having a pattern in space of its magnetic field strength such that a first sub-zone having a low magnetic field strength and a second sub-zone having a higher magnetic field strength are formed in the region of action, drive means for changing the position in space of the two sub-zones in the region of action by means of a magnetic drive field so that the magnetization of the magnetic particles changes locally, receiving means for acquiring signals, which signals depend on the magnetization in theregion of action, which magnetization is influenced by the change in the position in space of the first and second sub-zone, wherein the receiving means comprises a first compensation means and a second compensation means the first and second compensation means comprising each a compensation coil.

Description

technical field [0001] The invention relates to a device for influencing and / or detecting magnetic particles in an active area. Furthermore, the invention relates to a method for influencing and / or detecting magnetic particles in a region of action and a method for adjusting a device according to the invention. Background technique [0002] Such a device and method are known from German patent application DE 101 51 778 A1. In the case of the method described in this publication, first a magnetic field is generated with a spatial distribution of the magnetic field strength such that a first subregion with a relatively low magnetic field strength and a second subregion with a relatively high magnetic field strength are formed in the examination region. sub-area. The spatial position of the sub-regions in the examination zone is then shifted such that the magnetization of the particles in the examination zone varies locally. recording signals that depend on the magnetization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/05
CPCA61B5/0515A61B5/05
Inventor B·格莱希J·魏岑埃克
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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