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公开(公告)号：EP0297818A3
公开(公告)日：1991-01-30
申请号：EP88305851.3
申请日：1988-06-28
CPC分类号： H03G3/3052 , H03G3/00
摘要： Improved data converter circuitry for a CT data acquisition system is disclosed which makes use of a programmable gain amplifier whose gain is set according to the magnitude of a detector input signal by selecting one of several resistor voltage-divider paths at the input of a fixed gain amplifier. An auto-zero loop uses an integrating op-amp to provide periodic correction to offset voltage of the fixed gain amplifier. In a modified embodiment, an auto-zero loop is provided for correction of both the fixed gain amplifier and a serially-connected A/D converter.
摘要翻译： 公开了用于CT数据采集系统的改进的数据转换器电路，其利用可编程增益放大器，其增益根据检测器输入信号的幅度设置，通过在固定增益的输入处选择若干电阻分压器路径中的一个 放大器。 自动归零循环使用积分运算放大器为固定增益放大器的偏移电压提供周期性校正。 在修改的实施例中，提供自动归零环路用于校正固定增益放大器和串行连接的A / D转换器。
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2.发明公开Methods and apparatus for troubleshooting scaleable multislice imaging system 审中-公开对于故障排除scalierbareren多层成像系统的方法和装置
公开(公告)号：EP0982659A3
公开(公告)日：2005-09-21
申请号：EP99306580.4
申请日：1999-08-20
摘要： The present invention, in one form, is an imaging system (10) which, in one embodiment, alters the configuration of a detector array (18) and a data acquisition system (32) to determine degraded component performance and generate fault isolation information. More specifically, by altering the configuration to include different combinations of detector array cells, interconnections, and one or more data acquisition channels, fault isolation information is generated.
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公开(公告)号：EP0473296B1
公开(公告)日：1997-04-16
申请号：EP91307057.9
申请日：1991-08-01
CPC分类号： A61B6/032 , A61B6/4021 , A61B6/405 , A61B6/482
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公开(公告)号：EP0994428A3
公开(公告)日：2003-10-29
申请号：EP99306595.2
申请日：1999-08-20
CPC分类号： A61B6/06 , A61B6/027 , A61B6/032 , A61B6/4078 , A61B6/4233 , A61B6/56 , Y10S378/901
摘要： A scalable data acquisition system (SDAS) (42) that may be used in connection with both single slice and multislice imaging systems (10) is described. Generally, the SDAS (42) in configured for use in a computed tomography system (10) and converts the low level electrical current signal from the x-ray detector (18) to digital values for image reconstruction, display and archive. The SDAS (42) also includes an anti-alias filter for each cell prior to analog to digital conversion (ADC). More specifically, the analog current signals from the detector (18) are supplied to the SDAS input channels via shielded ribbon or flex cables (62). The cables (62) are connected to the SDAS (42) at the SDAS backplane (102). The SDAS Converter boards (104) are also plugged into the SDAS backplane (102).
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公开(公告)号：EP0473296A3
公开(公告)日：1992-10-28
申请号：EP91307057.9
申请日：1991-08-01
CPC分类号： A61B6/032 , A61B6/4021 , A61B6/405 , A61B6/482
摘要： A data acquisition filter (19) for a dual beam CT machine uses two spectral filters (74,76) for alternately receiving the signal (64) from each detector (26) depending on the state of the x-ray beam (24). When one filter is filtering the detector signal, the other filter is in a "hold" state where its output and internal values are frozen. Each filter effectively filters only the signal occurring during one beam state without being effected by the signal occurring during the other beam state or by the passage of time during the other beam state The output of the filter in the holding state is constant and may be sampled at any time during this period.
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公开(公告)号：EP0994428A2
公开(公告)日：2000-04-19
申请号：EP99306595.2
申请日：1999-08-20
IPC分类号： G06F17/40
CPC分类号： A61B6/06 , A61B6/027 , A61B6/032 , A61B6/4078 , A61B6/4233 , A61B6/56 , Y10S378/901
摘要： A scalable data acquisition system (SDAS) (42) that may be used in connection with both single slice and multislice imaging systems (10) is described. Generally, the SDAS (42) in configured for use in a computed tomography system (10) and converts the low level electrical current signal from the x-ray detector (18) to digital values for image reconstruction, display and archive. The SDAS (42) also includes an anti-alias filter for each cell prior to analog to digital conversion (ADC). More specifically, the analog current signals from the detector (18) are supplied to the SDAS input channels via shielded ribbon or flex cables (62). The cables (62) are connected to the SDAS (42) at the SDAS backplane (102). The SDAS Converter boards (104) are also plugged into the SDAS backplane (102).
摘要翻译： 描述了可以与单片和多片成像系统（10）结合使用的可伸缩数据采集系统（SDAS）（42）。 通常，配置用于计算机断层摄影系统（10）并且将来自X射线检测器（18）的低电平电流信号转换成用于图像重建，显示和归档的数字值的SDAS（42）。 SDAS（42）还包括在模数转换（ADC）之前的每个单元的抗混叠滤波器。 更具体地，来自检测器（18）的模拟电流信号通过屏蔽带状或挠性电缆（62）提供给SDAS输入通道。 电缆（62）在SDAS背板（102）处连接到SDAS（42）。 SDAS转换器板（104）也被插入到SDAS背板（102）中。
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公开(公告)号：EP0982740A2
公开(公告)日：2000-03-01
申请号：EP99306630.7
申请日：1999-08-20
IPC分类号： H01B7/42
CPC分类号： H01B7/29
摘要： A cable for a computed tomography system is described. In one embodiment, the cable (60) electrically connects a detector module to a data acquisition system. The cable (60) includes a conductor layer, an insulating layer and a shield layer (68) having a thermal barrier (100). The thermal barrier (100) reduces the amount of heat which is transferred from the data acquisition system to the detector module.
摘要翻译： 描述了用于计算机断层摄影系统的电缆。 在一个实施例中，电缆（60）将检测器模块电连接到数据采集系统。 电缆（60）包括导体层，绝缘层和具有热障（100）的屏蔽层（68）。 热障（100）减少从数据采集系统传送到检测器模块的热量。
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8.发明公开Methods and apparatus for troubleshooting scaleable multislice imaging system 审中-公开对于故障排除scalierbareren多层成像系统的方法和装置
公开(公告)号：EP0982659A2
公开(公告)日：2000-03-01
申请号：EP99306580.4
申请日：1999-08-20
IPC分类号： G06F11/22
摘要： The present invention, in one form, is an imaging system (10) which, in one embodiment, alters the configuration of a detector array (18) and a data acquisition system (32) to determine degraded component performance and generate fault isolation information. More specifically, by altering the configuration to include different combinations of detector array cells, interconnections, and one or more data acquisition channels, fault isolation information is generated.
摘要翻译： 本发明中，在一种形式中，是成像系统（10），其在一个实施方式中，年龄的检测器阵列（18）和一个数据采集系统（32），以确定矿的结构劣化成分的性能和产生故障隔离信息。 更具体地，通过改变配置，以包括检测器阵列单元，互连和一个或多个数据采集通道，则产生故障隔离信息的不同组合。
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公开(公告)号：EP0994428B1
公开(公告)日：2005-11-30
申请号：EP99306595.2
申请日：1999-08-20
CPC分类号： A61B6/06 , A61B6/027 , A61B6/032 , A61B6/4078 , A61B6/4233 , A61B6/56 , Y10S378/901
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公开(公告)号：EP0982740A3
公开(公告)日：2000-12-27
申请号：EP99306630.7
申请日：1999-08-20
IPC分类号： H01B7/42
CPC分类号： H01B7/29
摘要： A cable for a computed tomography system is described. In one embodiment, the cable (60) electrically connects a detector module to a data acquisition system. The cable (60) includes a conductor layer, an insulating layer and a shield layer (68) having a thermal barrier (100). The thermal barrier (100) reduces the amount of heat which is transferred from the data acquisition system to the detector module.
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