MAGNETIC RESONANCE IMAGING DEVICE AND SUPERCONDUCTING MAGNET

Provided are a magnetic resonance imaging device and a superconducting magnet capable of preventing generation of eddy currents accompanying vibration of a radiation shield and of reducing image quality deterioration. The superconducting magnet 1 for a magnetic resonance imaging device includes a su...

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Bibliographic Details
Main Authors IMAMURA YUKINOBU, KUROME AKIRA, YATSUO TAKESHI, FUJIKAWA TAKUYA, HOSHINO SHIN
Format Patent
LanguageChinese
English
Published 24.11.2020
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
TESTING
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Summary:Provided are a magnetic resonance imaging device and a superconducting magnet capable of preventing generation of eddy currents accompanying vibration of a radiation shield and of reducing image quality deterioration. The superconducting magnet 1 for a magnetic resonance imaging device includes a substantially cylindrical vacuum vessel 11, a substantially cylindrical radiation shield 12 that is provided inside the vacuum vessel 11, and a superconducting coil 10 that is provided inside the radiation shield 12. The radiation shield 12 has an inner cylinder 12a located radially inward of the superconducting coil 10. The inner cylinder 12a of the radiation shield 12 is provided with an annular rib 17 formed in a circumferential direction about the central axis 8 of the inner cylinder 12a. 本发明提供能抑制伴随辐射屏蔽件的振动而产生涡流并能减少画像质量降低的磁共振成像装置及超导磁铁。磁共振成像装置用的超导磁铁(1)具有大致圆筒形状的真空容器(11)、配置在真空容器(11)内的大致圆筒形状的辐射屏蔽件(12)、以及配置在辐射屏蔽件(12)内的超导线圈(10)。辐射屏蔽件(12)具有位于超导线圈(10)的径向内侧的内筒(12a)。在辐射屏蔽件(12)的内筒(12a)设有沿以该内筒(12a)的中心轴(8)为中心的圆周方向形成的圆环状的肋(17)
Bibliography:Application Number: CN202010082916