公开(公告)号：US20140062484A1

公开(公告)日：2014-03-06

申请号：US13915859

申请日：2013-06-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jun Suk KWAK ,  Sung Il KIM ,  Seung Je CHOI

IPC: G01R33/38

CPC classification number: G01R33/3804 ,  G01R33/3802 ,  G01R33/3873 ,  G01R33/4215 ,  Y10T29/4902

Abstract: A magnetic resonance imaging (MRI) apparatus and method of manufacture including shims provided in outermost or an innermost part of a gradient coil unit. The MRI apparatus includes: a static coil unit configured to form a static field in a subject; and a gradient coil unit configured to form a gradient field in the static field, wherein the gradient coil unit includes one or more shims in an outermost part or an innermost part.

Abstract translation: 磁共振成像（MRI）装置和制造方法，包括设置在梯度线圈单元的最外侧或最内侧的垫片。 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; 以及梯度线圈单元，被配置为在所述静态场中形成梯度场，其中所述梯度线圈单元包括在最外部或最内部的一个或多个垫片。

公开(公告)号：US20140218031A1

公开(公告)日：2014-08-07

申请号：US14172136

申请日：2014-02-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dae Ho LEE ,  Seung Je CHOI ,  Joon Soo KIM

IPC: G01R33/387

CPC classification number: G01R33/56518

Abstract: A magnetic resonance imaging apparatus includes a magnetic assembly including a main magnet and a gradient coil unit and forming a static magnetic field and a gradient magnetic field in the bore thereof, and a gradient controller applying a test gradient waveform to the magnetic assembly, and compensating for a distortion of the magnetic field gradients, caused by eddy currents, by reflecting the actual shape of the applied test gradient waveform.

Abstract translation: 磁共振成像装置包括：磁性组件，包括主磁体和梯度线圈单元，并在其孔中形成静磁场和梯度磁场;以及梯度控制器，将测试梯度波形应用于磁组件，并补偿 通过反映所应用的测试梯度波形的实际形状，由涡流引起的磁场梯度失真。

公开(公告)号：US20140084929A1

公开(公告)日：2014-03-27

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: G01R33/28 ,  G01R33/00

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。