Magnetic particle imaging scanner based on Halbach array

• Main Authors: CHEN WEIXU, CHEN XU, HE ZHONGHUA, SU YUYI
• Format: Patent
• Language: Chinese; English
• Published: 21.10.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; DIAGNOSIS; ELECTRIC DIGITAL DATA PROCESSING; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY

The invention relates to a magnetic particle imaging scanner based on a Halbach array, and belongs to the technical field of medical electromagnetic detection. The scanner is composed of a Halbach quadrupole ring, a Halbach dipole ring, an exciting coil and a receiving coil, the Halbach quadrupole ring comprises an outer quadrupole ring and an inner quadrupole ring which are nested, and the Halbach dipole ring is also nested and comprises an outer dipole ring and an inner dipole ring. The quadrupole ring generates a selection field, the dipole ring generates a driving field, the excitation coil generates an excitation magnetic field, and the receiving coil receives an imaging signal. The gradient intensity of a selection field can be adjusted by adjusting the rotation angles of the two quadrupole rings, and the magnetic flux density of a driving field can also be adjusted by adjusting the rotation angles of the two dipole rings, so that flexibility and adjustability are achieved; meanwhile, the power consumpt