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Design and Comparison of Superconducting Magnets with Circular Coil Elements for Magnetic Resonance Imaging  

Kim, Yong-Gwon (Konyang University)
Hyun, Jung-Ho (Korea University)
Seo, Jeung-Hoon (Korea University)
Kim, Hyug-Gi (Korea University)
Oh, Chang-Hyun (Korea University)
Publication Information
Abstract
This paper proposed a method which is the three types of magnet model for improving field inhomogeneity of superconducting magnet. The length of coil wire was compared for the optimized current pattern using minimum power methods and field inhomogeneity under the specific simulation condition in case of same magnet field strength about each magnet type field inhomogeneity. Length of wire and field inhomogeneity were compared under the same condition(18 target points, 20cm DSV). According to the simulation results, the smaller target points can reduce the wire length but it can not improve the field inhomogeneity. Length of wire and low field inhomogeneity can not improve in same time. However, small DSV and reducing target points can overcome the these problem. And to conclude, if it processes shimming as reducing target points in case of magnet model which is open to space, about the size of same imaging region it needs a lot of current values(or the length of wire) and decreases field homogeneity but it is useful to get small ROI.
Keywords
Magnet design; Magnet shim; Magnetic field homogeneity; Superconducting magnet; Magnetic Resonance Imaging;
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