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Zeljko D. Vujovic
Department of Chemistry, University of Belgrade, Belgrade, Serbia and Montenegro
Publications
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Research Article
Gradient Magnetic Field of MR Scanners
Author(s): Zeljko D. Vujovic*
The topic of this paper is parts of modern MR devices, in which the magnet windings are located. MR scanner magnets are made of four types of electromagnetic windings: The main magnet, made of superconducting material, creates a variable magnetic field; X coil, made of resistive material, creates a variable magnetic field, horizontally, from left to right, across scanning tube; Y coil creates a varying magnetic field, vertically, from bottom to top; Z coil creates varying magnetic field, longitudinally, from head to toe, within scanning tube. Superconductors, which create the main magnetic field, should be cooled by liquid helium and liquid nitrogen. Main magnets made of superconductors should use cryostat, with cooling vessels with liquid helium and liquid nitrogen, thermal insulation, and other protective elements of the magnet system. The types of magnets that exist in the basic co.. View more»