Simulated construction of miniaturized magnetic particle imaging system based on superconductor
TIAN Yushen
MA Shaohua
WANG Chengsong
FAN Lin
Abstract：Aiming at the problem that magnetic particle imaging(MPI)has been stayed in the laboratory mouse-scale stage,due to the conventional coils being incapable of constructing a high-strength gradient magnetic field for human use within an acceptable size,a method based on superconductor was proposed to develop miniaturized MPI system with a high-strength magnetic field.High-temperature superconductor MgB2 coils were employed to replace the conventional copper coils to construct selection and drive fields of magnetic particles.The results show that under the condition of achieving the same order of magnetic flux,the total weight of two functional modules decreases to 0.01 kg,and the equipment volume decreases to 7 L due to the superconductor MPI.On this basis,the superconductor coils can provide a gradient magnetic field with a steeper slope of change,contributing to a clear and regular boundaries of field-free scanning region and more stable shape during the moving process with an average diameter narrows by about 50%.
Keywords：magnetic particle imagingminiaturized equipmentgradient magnetic fieldfield free regionhigh-temperature superconductorMgB2 coilselection fielddrive field
Publication Date：2024-03-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 138-143 )