Magnet for head and limb magnetic resonance imaging device

Abstract

The invention relates to a magnetic body for head- limb magnetic resonant imaging device, which comprises an open C type rack with two upright columns, a magnetic steel material, a cartridge, an anti-spinning disk, a shimming ring adjustment sheet, a shimming ring, low-temperature heating cables and a temperature probe, wherein the anti-spinning disk employs double layer alternating de-spinning disk, the top and bottom surfaces the cartridge element are provided with the shimming ring with inclination angle and shimming ring adjustment sheet of the corresponding number.

Description

Technical field [0001] The invention relates to a medical device, in particular to a permanent magnet type magnet for magnetic resonance imaging equipment for medical diagnosis of the head, limbs and children's whole body. Background technique [0002] Magnets are the key components of magnetic resonance equipment. To develop magnetic resonance equipment, magnets must be developed first. Magnets provide an MRI imaging system with a sufficiently uniform magnetic field in the imaging space. Its performance is directly related to the signal-to-noise ratio of the magnetic resonance equipment system. To a certain extent, it determines the clarity of the image. [0003] The disadvantages of traditional permanent magnets using ferrite magnetic materials are low field strength, heavy weight, bulky, closed and poor practicability. The early 3000 Gauss magnet weighed 100 tons, which brought great inconvenience to the later magnet transportation and installation. With the development...

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Problems solved by technology

However, since the above-mentioned products all adopt a split assembly structure in the overall structure, the yoke iron part is composed of multiple parts, and the parallelism of the upper and lower yoke irons of the magnet cannot be guaranteed during processing and assembly, so the index of the magnet has been affected to a certain extent. In particular, it increases the hidden dangers of mechanical strength, and at the same time affects the uniformity and smoothness of the magnetic circuit.

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