A magnetic particle imaging scanner based on halbach array and birdcage coil

CN116035551BActive Publication Date: 2026-06-26CHONGQING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV OF POSTS & TELECOMM
Filing Date
2023-01-04
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing magnetic particle imaging scanners suffer from high power consumption and the inability to flexibly adjust the selected field gradient and magnetic field strength, resulting in high equipment costs and unreliable performance.

Method used

The structure combines a Halbach quadrupole ring with a birdcage coil. By adjusting the rotation angle of the Halbach quadrupole ring and the amplitude and phase of the excitation source of the birdcage coil, the selective field gradient intensity can be flexibly adjusted. In addition, the detection accuracy is improved by combining it with a differential receiving coil.

Benefits of technology

A magnetic particle imaging scanner with simple structure, low cost, reliable performance, and low power consumption has been developed. It has flexible scanning modes and high detection sensitivity, and is suitable for imaging needs of various parts of the human body.

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Abstract

The application relates to a magnetic particle imaging scanner based on a Halbach array and a birdcage coil, and belongs to the technical field of medical imaging detection. The magnetic particle imaging scanner comprises a Halbach quadrupole ring, a birdcage coil and a differential receiving coil. The Halbach quadrupole ring is located outside the birdcage coil and is used for generating a selection field of the magnetic particle imaging scanner; the birdcage coil is located outside the differential receiving coil and is used for generating a driving field of the magnetic particle imaging scanner, so that a magnetic field free point moves on a specific track to meet the scanning requirements required by imaging; and the differential receiving coil is located outside an imaging target area of the magnetic particle imaging scanner and is used for receiving a magnetic particle imaging signal. The application has the advantages of simple structure, low cost, high detection precision, adjustable flexibility of lines and height, and the like, and can realize magnetic particle imaging scanning of various parts of a human body.
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