Abstract Magnetic nanoparticle imaging (MPI) is a new detection technology. It has the advantages of safety, fast detection and high accuracy in imaging. Field-free line scanning can image the magnetic nanoparticles distribution inside the measured object, which has important research significance. Due to small detection area and accuracy in the MPI, here an open bore MPI method is proposed. The field-free line (FFL) and its rotation mode for open magnetic particle tomography are studied. The way of the electric drive is designed to realize the rotation of FFL under the open structure. The simulation results show that the detection aperture of the system structure is 200mm high and leaving sides open,the rotation angle error of field-free line is less than 0.025 9°, the width of FFL is less than 0.95mm, single scan time is 3.6ms. The open bore MPI system designed in this paper effectively expands the detection aperture and fitting the submillimeter precision to image the magnetic particle distribution and millisecond detection speed.
Zu Wanni,Ke Li,Du Qiang等. Electronically Rotated Field-Free Line Generation for Open Bore Magnetic Particle Tomography Imaging[J]. Transactions of China Electrotechnical Society, 2020, 35(19): 4161-4170.
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2020, Vol. 35 
