Magnetic particle imaging system based on magnetic field-free line scanning

A magnetic particle imaging, non-magnetic field technology, used in medical science, sensors, diagnostic recording/measurement, etc. Effect

Active Publication Date: 2019-10-25
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the above problems in the prior art, that is, in order to solve the problem that the sensitivity and resolution of the magnetic particle imaging system cannot meet the requirem

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  • Magnetic particle imaging system based on magnetic field-free line scanning

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than Full examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention...

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Abstract

The invention belongs to the field of magnetic particle imaging, particularly relates to a magnetic particle imaging system based on magnetic field-free line scanning and is intended to solve the problem that a magnetic particle imaging system has unsatisfactory sensitivity and resolution. The magnetic particle imaging system based on magnetic field-free line scanning comprises a magnet unit, an induction coil, an imaging table, and a control and imaging device; the magnet unit comprises two pairs of circular magnets in axial orthogonal arrangement and a tubular magnet; two circular magnets ineach pair of circular magnets are coaxial; the tubular magnet is arranged in an enclosure space of the two pairs of circular magnets, and the axis of the tubular magnet crosses through an orthogonalpoint of the axes of the two pairs of circular magnets and is perpendicular to a plane formed by the axes of the two pairs of circular magnets; the control and imaging device is used to control changes in magnetic fields of the magnets in the magnet unit according to set control instructions so that magnetic field-free line rotation and/or shift is achieved; magnetic particle imaging is performedon current signals generated in the induction coil according to an induction magnetic field. The magnetic particle imaging system has the advantages that magnetic particle positioning precision is improved and resolution is increased.

Description

technical field [0001] The invention belongs to the field of magnetic particle imaging, in particular to a magnetic particle imaging system based on non-magnetic field line scanning. Background technique [0002] In clinical diagnosis and detection, how to accurately and objectively locate tumors and other lesions has always been an international research hotspot and challenging issue. Existing medical imaging technologies such as CT, MRI, SPECT and other methods all have problems such as high harm, poor positioning, and low precision. In recent years, a new tracer-based imaging method—magnetic particle imaging (MPI) has been proposed. Using tomographic imaging technology, MPI can accurately locate tumors or targets by detecting the spatial concentration distribution of superparamagnetic iron oxide nanoparticles (SPIOs) that are harmless to the human body. It has three-dimensional imaging, high temporal and spatial resolution and high sensitivity. features. In addition, M...

Claims

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Application Information

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IPC IPC(8): A61B5/05
CPCA61B5/0515
Inventor 田捷惠辉张鹏王坤杨鑫
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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