公开(公告)号：US09599683B2

公开(公告)日：2017-03-21

申请号：US14358938

申请日：2012-11-14

Applicant: UWM Research Foundation, Inc.

Inventor： Brian S. R. Armstrong ,  Todd P. Kusik ,  Robert T. Barrows

IPC: G01R33/28 ,  H04N5/225 ,  H04N5/232 ,  G01R33/567

CPC classification number: G01R33/283 ,  G01R33/5673 ,  H04N5/2254 ,  H04N5/2256 ,  H04N5/23241

Abstract: A camera assembly for use in a MRI machine. The camera assembly includes a Faraday cage defining a shielded cavity and an optical path mount constructed of a highly stiff, dense, and non-electrically-conductive material in the shielded cavity. The camera imager and lens are mounted to the optical path mount. The camera assembly includes a capacitor-based power regulation circuit. The optical path mount is not subject to eddy currents because it is non-electrically-conductive. The capacitor-based power regulation circuit includes very little ferrous material and is within the shielded cavity, to reduce eddy currents. The resulting camera assembly reduces vibrations and shaking in the magnetic field environment of the MRI machine.

公开(公告)号：US20140354282A1

公开(公告)日：2014-12-04

申请号：US14358938

申请日：2012-11-14

Applicant: UWM Research Foundation, Inc.

Inventor： Todd P. Kusik ,  Brian S. R. Armstrong ,  Robert T. Barrows

IPC: G01R33/28 ,  H04N5/225 ,  H04N5/232

CPC classification number: G01R33/283 ,  G01R33/5673 ,  H04N5/2254 ,  H04N5/2256 ,  H04N5/23241

Abstract: A camera assembly for use in a MRI machine. The camera assembly includes a Faraday cage defining a shielded cavity and an optical path mount constructed of a highly stiff, dense, and non-electrically-conductive material in the shielded cavity. The camera imager and lens are mounted to the optical path mount. The camera assembly includes a capacitor-based power regulation circuit. The optical path mount is not subject to eddy currents because it is non-electrically-conductive. The capacitor-based power regulation circuit includes very little ferrous material and is within the shielded cavity, to reduce eddy currents. The resulting camera assembly reduces vibrations and shaking in the magnetic field environment of the MRI machine.

Abstract translation: 用于MRI机器的相机组件。 相机组件包括限定屏蔽空腔的法拉第笼，以及由屏蔽腔中的高刚性，致密和非导电材料构成的光路安装座。 相机成像器和镜头安装到光路安装座。 相机组件包括基于电容器的功率调节电路。 光路安装不受涡流的影响，因为它是非导电的。 基于电容器的功率调节电路包括非常少的铁质材料，并且在屏蔽腔内，以减少涡流。 所得到的相机组件减少MRI机器的磁场环境中的振动和振动。