Title :
A 0.6-tesla superconducting magnet for magnetic resonance imaging
Author :
Zhang, C.J. ; Lin, M.H. ; Chen, H.S. ; Zhou, X.T. ; Liu, Q.N.
Author_Institution :
China Kejian Corp. Ltd., Shenzhen, China
fDate :
1/1/1992 12:00:00 AM
Abstract :
The authors introduce the first superconducting magnet system for whole body magnetic resonance imaging built in China. The character and composition of the system are described in detail. The warm bore diameter of the magnet system is 1.08 m; the length is 2.55 m; and the total weight is 7000 kg. The main 0.6-T magnet is composed of six superconducting coils. The coils are wound with NbTi wire with a 1-mm diameter, and the rated current is 142.6 A. Passive shims are used to correct the central field and achieve a uniformity of 2.5 ppm in 30 cm DSV. The cryostat system is equipped with an LHe and LN2 closed-loop refrigerator
Keywords :
biomedical NMR; biomedical equipment; magnetic resonance spectrometers; spectrometer components and accessories; superconducting magnets; 0.6 T; 142.6 A; NbTi wire; closed-loop refrigerator; cryostat system; passive shims; rated current; superconducting coils; superconducting magnet system; whole body magnetic resonance imaging; Boring; Helium; Magnetic resonance imaging; Refrigeration; Superconducting coils; Superconducting filaments and wires; Superconducting magnets; Switches; Temperature; Wounds;
Journal_Title :
Magnetics, IEEE Transactions on
