公开(公告)号：EP0980196A3

公开(公告)日：2001-09-05

申请号：EP99305708.2

申请日：1999-07-20

申请人： Marconi Medical Systems, Inc.

发明人： Resnick, Theodore A. ,  Mattson, Rodney A.

IPC分类号： H05G1/32 ,  H05G1/36

CPC分类号： H05G1/32

摘要： An x-ray radiation stabilization system is provided including an x-ray tube (20) which emits x-ray radiation (22) . The x-ray tube (20) has an anode (52) , a cathode (50) , and a vacuum envelope (54) which houses the anode (52) and the cathode (50) . A high-voltage generator (40) is connected to the x-ray tube (20) . It supplies a high-voltage electric potential between the cathode (50) and anode (52) such that an electron beam flows therebetween. The electron beam strikes the anode (52) producing the x-ray radiation (22) . A reference radiation detector (60) samples a representative portion of the x-ray radiation (22) emitted by the x-ray tube (20) and generates a signal in response to an intensity of the sampled x-ray radiation (22) . A feedback circuit (80) is connected between the reference radiation detector (60) and the high-voltage generator (40) . The feedback circuit (80) generates an error signal and in response thereto directs the high-voltage generator (40) to adjust the high-voltage electric potential supplied to the x-ray tube (20) so that in the x-ray radiation (22) ripple having a predetermined frequency range is substantially cancelled.

公开(公告)号：EP1086653A1

公开(公告)日：2001-03-28

申请号：EP00307960.5

申请日：2000-09-14

申请人： Marconi Medical Systems, Inc.

发明人： Herold, Mark D. ,  Resnick, Theodore A.

IPC分类号： A61B6/00

CPC分类号： A61B6/56

摘要： A computerized tomography system includes a stationary section ( A ) and a rotating section electrically linked by at least one interconnecting slip ring ( E ). On one side the slip ring ( E ) is configured as a series of electrically conductive segments separated by non-conductive interruptions. On the other side a like number of transmitters is in selective electrical contact with the conductive segments depending on a position of the rotating frame. Also included is a de-multiplexer which takes image data from the plurality of receivers and rearranges the image data in a determined sequence. Also provided is an angular encoder for providing angular displacement signals to the de-multiplexer for assistance in reconstructing the data channels in the determined sequence.

摘要翻译： 计算机断层摄影系统包括固定部分（A）和由至少一个互连滑环（E）电连接的旋转部分。 一方面，滑环（E）被配置为由非导电中断分开的一系列导电段。 另一方面，根据旋转框架的位置，相同数量的发射器与导电段选择性地电接触。 还包括去多路复用器，其从多个接收器获取图像数据并以确定的顺序重新排列图像数据。 还提供了一种角度编码器，用于向去多路复用器提供角位移信号，以帮助以确定的顺序重构数据信道。