公开(公告)号：US10261148B2

公开(公告)日：2019-04-16

申请号：US15675944

申请日：2017-08-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Oh Soo Kwon ,  Dong Keun Park ,  Jun Suk Kwak

IPC: G01R33/38 ,  G01R33/385 ,  G01R33/3873

Abstract: The MRI apparatus includes a main magnet forming a static magnetic field in a bore, and a gradient coil assembly which forms a magnetic field gradient in the static magnetic field and includes a plurality of shim trays arranged therein at a predefined interval and at least one first shim token provided between the shim trays.

公开(公告)号：US09482727B2

公开(公告)日：2016-11-01

申请号：US13954344

申请日：2013-07-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seung Je Choi ,  Dong Keun Park ,  Gyu Wan Hwang

IPC: G01R33/385 ,  G01R33/565 ,  G01R33/28 ,  G01R33/00 ,  G01R33/38 ,  G01R33/381

CPC classification number: G01R33/28 ,  G01R33/0052 ,  G01R33/3802 ,  G01R33/381 ,  G01R33/3858 ,  G01R33/56518 ,  Y10T29/49004

Abstract: A magnetic resonance imaging (MRI) method and apparatus in which conductors are installed in the space between a static coil unit and a gradient coil unit to eliminate asymmetry of eddy current induced in the static coil unit. The structure permits a symmetrical distribution of eddy current when the concentric arrangement of the static coil unit and gradient coil unit has deviated. The MRI apparatus includes: a static coil unit configured to form a static field in a subject; a gradient coil unit configured to form a gradient field in the static field; and one or more conductors installed in the space between the static coil unit and the gradient coil unit, and configured to symmetrically distribute eddy current induced in the static coil unit.

Abstract translation: 一种磁共振成像（MRI）方法和装置，其中导体安装在静态线圈单元和梯度线圈单元之间的空间中，以消除在静态线圈单元中感应的涡流的不对称性。 当静态线圈单元和梯度线圈单元的同心布置已经偏离时，该结构允许涡流的对称分布。 MRI装置包括：静电线圈单元，被配置为在受试者中形成静态场; 梯度线圈单元，被配置为在静态场中形成梯度场; 以及一个或多个导体，其安装在静态线圈单元和梯形线圈单元之间的空间中，并且构造成对称地分布在静态线圈单元中感应的涡流。

公开(公告)号：US20170343632A1

公开(公告)日：2017-11-30

申请号：US15675944

申请日：2017-08-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Oh Soo Kwon ,  Dong Keun Park ,  Jun Suk Kwak

IPC: G01R33/3873 ,  G01R33/385 ,  G01R33/38

CPC classification number: G01R33/3873 ,  G01R33/3804 ,  G01R33/3856

Abstract: The MRI apparatus includes a main magnet forming a static magnetic field in a bore, and a gradient coil assembly which forms a magnetic field gradient in the static magnetic field and includes a plurality of shim trays arranged therein at a predefined interval and at least one first shim token provided between the shim trays.

公开(公告)号：US09759791B2

公开(公告)日：2017-09-12

申请号：US14458896

申请日：2014-08-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Oh Soo Kwon ,  Dong Keun Park ,  Jun Suk Kwak

IPC: G01R33/3873 ,  G01R33/38 ,  G01R33/385

CPC classification number: G01R33/3873 ,  G01R33/3804 ,  G01R33/3856

Abstract: The MRI apparatus includes a main magnet forming a static magnetic field in a bore, and a gradient coil assembly which forms a magnetic field gradient in the static magnetic field and includes a plurality of shim trays arranged therein at a predefined interval and at least one first shim token provided between the shim trays.