Patent ID: 11931135
Assignee: BEIJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 5:
6. A human-scale closed-bore MPI method based on a radial-Cartesian trajectory scanning, implemented through the human-scale closed-bore MPI device based on the radial-Cartesian trajectory scanning according to claim 5, and comprising:
S100: moving the examination object along the axial direction of the imaging hole to the preset position;
S200: constructing, based on the two circular permanent magnets, the two curved rectangular coils, and the first cylindrical coil, the field-free point and a dynamic magnetic field for radial-Cartesian trajectory scanning;
S300: acquiring, based on the second cylindrical coil, the third cylindrical coil, and the fourth cylindrical coil, the nonlinear magnetization response signal of the magnetic particles;
S400: reconstructing, based on the acquired nonlinear magnetization response signal of the magnetic particles, the spatial distribution image of the physical feature of the magnetic particles through a preset imaging algorithm; and
S500: moving the examination object along the axial direction of the imaging hole, and repeating steps S200 to S400 until the imaging of all examination regions of the examination object is completed.