The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2024
Filed:
Jun. 14, 2022
Fujifilm Healthcare Corporation, Kashiwa, JP;
Kengo Goto, Tokyo, JP;
Manabu Aoki, Tokyo, JP;
Taisuke Takayanagi, Tokyo, JP;
Shin Hoshino, Kashiwa, JP;
Yukinobu Imamura, Kashiwa, JP;
Hiroyuki Takeuchi, Kashiwa, JP;
Takeshi Nakayama, Kashiwa, JP;
FUJIFILM Healthcare Corporation, Chiba, JP;
Abstract
An MRI apparatus equipped with a magnetic shield structure to reduce flux leakage. The MRI apparatus includes: a pair of static magnetic magnets that are disposed on opposite sides of an imaging space; and a pair of gradient coils that are disposed on opposite sides of the imaging space. Each static magnetic magnet has a disk-shaped magnetic material poleand a ring-shaped magnetic material pole. Each gradient coil has a first coilthat applies a magnetic field gradient in a Z axis direction in an imaging region, and a laminatethat shields the disk-shaped magnetic material pole from magnetic flux produced in the first coil. The laminate has a smaller thickness in the Z axis direction on the ring-shaped magnetic material pole side than that in a center portion of the imaging space. A vertical lowest portion of a laminate end portion on the ring-shaped magnetic material pole side of the laminate is in a higher position than a position of a lowest portion of a laminate central portion on the imaging region side of the laminate.