公开(公告)号：US20160245934A1

公开(公告)日：2016-08-25

申请号：US14627436

申请日：2015-02-20

Applicant: General Electric Company

Inventor： Arie Shahar ,  Mark David Fries ,  Yaron Glazer ,  Jeffrey Michael Levy ,  Avishai Ofan ,  Rotem Har-Lavan

IPC: G01T7/00 ,  G01T1/161 ,  G01T1/24

CPC classification number: G01T7/005 ,  G01J1/4228 ,  G01J2001/442 ,  G01T1/249

Abstract: A radiation detector assembly is provided including a semiconductor detector, pixelated anodes, and at least one processor. The pixelated anodes are disposed on a surface of the semiconductor detector, and configured to generate a primary signal responsive to reception of a photon and a secondary signal responsive to an induced charge caused by reception of a photon by at least one adjacent anode. The at least one processor is operably coupled to the pixelated anodes, and configured to define sub-pixels for each pixelated anode; acquire primary signals and secondary signals from the pixelated anodes; determine sub-pixel locations for acquisition events using the primary and secondary signals; generate a sub-pixel energy spectrum for each sub-pixel; apply at least one energy calibration parameter to adjust the sub-pixel energy spectra for each pixelated anode; and, for each pixelated anode, combine the adjusted sub-pixel energy spectra to provide a pixelated anode spectrum.

Abstract translation: 提供了包括半导体检测器，像素化阳极和至少一个处理器的辐射检测器组件。 像素化阳极设置在半导体检测器的表面上，并且被配置为响应于接收光子和响应于由至少一个相邻阳极接收光子而引起的感应电荷的次级信号而产生主信号。 所述至少一个处理器可操作地耦合到所述像素化阳极，并且被配置为为每个像素化的阳极定义子像素; 从像素化阳极获取主信号和次信号; 使用主信号和次信号确定采集事件的子像素位置; 为每个子像素生成子像素能谱; 施加至少一个能量校准参数以调整每个像素化阳极的子像素能量谱; 并且对于每个像素化的阳极，组合经调整的子像素能谱以提供像素化阳极光谱。

公开(公告)号：US09696440B2

公开(公告)日：2017-07-04

申请号：US14627436

申请日：2015-02-20

Applicant: General Electric Company

Inventor： Arie Shahar ,  Mark David Fries ,  Yaron Glazer ,  Jeffrey Michael Levy ,  Avishai Ofan ,  Rotem Har-Lavan

IPC: H01L27/146 ,  G01T7/00 ,  G01T1/24 ,  G01J1/42 ,  G01J1/44

CPC classification number: G01T7/005 ,  G01J1/4228 ,  G01J2001/442 ,  G01T1/249

Abstract: A radiation detector assembly is provided including a semiconductor detector, pixelated anodes, and at least one processor. The pixelated anodes are disposed on a surface of the semiconductor detector, and configured to generate a primary signal responsive to reception of a photon and a secondary signal responsive to an induced charge caused by reception of a photon by at least one adjacent anode. The at least one processor is operably coupled to the pixelated anodes, and configured to define sub-pixels for each pixelated anode; acquire primary signals and secondary signals from the pixelated anodes; determine sub-pixel locations for acquisition events using the primary and secondary signals; generate a sub-pixel energy spectrum for each sub-pixel; apply at least one energy calibration parameter to adjust the sub-pixel energy spectra for each pixelated anode; and, for each pixelated anode, combine the adjusted sub-pixel energy spectra to provide a pixelated anode spectrum.

公开(公告)号：US09927539B2

公开(公告)日：2018-03-27

申请号：US15613998

申请日：2017-06-05

Applicant: General Electric Company

Inventor： Arie Shahar ,  Mark David Fries ,  Yaron Glazer ,  Avishai Ofan

IPC: H01L27/146 ,  G01T7/00 ,  G01T1/24 ,  G01T1/29

CPC classification number: G01T7/005 ,  G01J1/4228 ,  G01J2001/442 ,  G01T1/249 ,  G01T1/2928

Abstract: A radiation detector assembly is provided that includes a semiconductor detector having a surface, plural pixelated anodes, and at least one processor. The pixelated anodes are disposed on the surface. Each pixelated anode is configured to generate a primary signal responsive to reception of a photon by the pixelated anode and to generate at least one secondary signal responsive to an induced charge caused by reception of a photon by at least one adjacent anode. The at least one processor is operably coupled to the pixelated anodes. The at least one processor configured to define sub-pixels for each pixelated anode; acquire signals corresponding to acquisition events from the pixelated anodes; determine sub-pixel locations for the acquisition events using the signals; and apply at least one calibration parameter on a per sub-pixel basis for the acquisition events based on the determined sub-pixel locations.

公开(公告)号：US20170018099A1

公开(公告)日：2017-01-19

申请号：US15282419

申请日：2016-09-30

Applicant: General Electric Company

Inventor： Floribertus P.M. Heukensfeldt Jansen ,  Mark David Fries ,  Tuoyu Cao

IPC: G06T11/00 ,  G01T1/20 ,  G06K9/00 ,  G01T1/164

CPC classification number: G06T11/008 ,  G01T1/17 ,  G01T1/40 ,  G06K9/0053

Abstract: A radiation detection system includes a detector unit and at least one processor. The detector unit is configured to generate signals responsive to radiation. The at least one processor is operably coupled to the detector unit and configured to receive the signals from the detector unit. The at least one processor is configured to obtain, during an imaging process, a first count for at least one of the signals corresponding to a first intrinsic energy window, the first energy window corresponding to values higher than an intrinsic peak value; obtain a second count for the at least one of the signals corresponding to a second intrinsic energy window, the second energy window corresponding to values lower than the intrinsic peak value; and adjust a gain applied to the signals based on at least the first count and the second count.

Abstract translation: 辐射检测系统包括检测器单元和至少一个处理器。 检测器单元被配置为产生响应于辐射的信号。 所述至少一个处理器可操作地耦合到所述检测器单元并且被配置为从所述检测器单元接收信号。 所述至少一个处理器被配置为在成像处理期间获得对应于第一固有能量窗口的信号中的至少一个的第一计数，所述第一能量窗对应于高于所述固有峰值的值; 获得对应于第二固有能量窗口的至少一个信号的第二计数，所述第二能量窗对应于低于所述固有峰值的值; 并且至少基于第一计数和第二计数来调整施加到信号的增益。

公开(公告)号：US09151851B2

公开(公告)日：2015-10-06

申请号：US13929006

申请日：2013-06-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Mark David Fries ,  David Leo McDaniel

IPC: G01T1/161 ,  G01T1/29 ,  G01T1/164 ,  G01T1/172

CPC classification number: G01T1/2985 ,  G01T1/161 ,  G01T1/1647 ,  G01T1/172

Abstract: A multiplexing circuit for a positron emission tomography (PET) detector includes a delay circuit and a multiplexer communicating with the delay circuit. The delay circuit configured to receive a plurality of timing pickoff (TPO) signals from a plurality of positron emission tomography (PET) detector units, add a delay time to at least one of the plurality of TPO signals, and transmit the TPO signals based on the delay time to the multiplexer, the multiplexer configured to a multiplex the TPO signals and output a single TPO signal from the plurality of TPO signals to a Time-to-Digital Convertor (TDC). A method of operating a multiplexer and a imaging system including a multiplexer are also provided.

Abstract translation: 用于正电子发射断层摄影（PET）检测器的复用电路包括延迟电路和与延迟电路通信的复用器。 延迟电路被配置为从多个正电子发射断层摄影（PET）检测器单元接收多个定时检测（TPO）信号，将延迟时间添加到多个TPO信号中的至少一个，并且基于 多路复用器的延迟时间，多路复用器被配置为对TPO信号进行复用，并将单个TPO信号从多个TPO信号输出到时间到数字转换器（TDC）。 还提供了一种操作多路复用器和包括多路复用器的成像系统的方法。

公开(公告)号：US20170269240A1

公开(公告)日：2017-09-21

申请号：US15613998

申请日：2017-06-05

Applicant: General Electric Company

Inventor： Arie Shahar ,  Mark David Fries ,  Yaron Glazer ,  Avishai Ofan

IPC: G01T7/00 ,  G01T1/24

CPC classification number: G01T7/005 ,  G01J1/4228 ,  G01J2001/442 ,  G01T1/249 ,  G01T1/2928

Abstract: A radiation detector assembly is provided that includes a semiconductor detector having a surface, plural pixelated anodes, and at least one processor. The pixelated anodes are disposed on the surface. Each pixelated anode is configured to generate a primary signal responsive to reception of a photon by the pixelated anode and to generate at least one secondary signal responsive to an induced charge caused by reception of a photon by at least one adjacent anode. The at least one processor is operably coupled to the pixelated anodes. The at least one processor configured to define sub-pixels for each pixelated anode; acquire signals corresponding to acquisition events from the pixelated anodes; determine sub-pixel locations for the acquisition events using the signals; and apply at least one calibration parameter on a per sub-pixel basis for the acquisition events based on the determined sub-pixel locations.

公开(公告)号：US09734603B2

公开(公告)日：2017-08-15

申请号：US15282419

申请日：2016-09-30

Applicant: General Electric Company

Inventor： Floribertus P. M. Heukensfeldt Jansen ,  Mark David Fries ,  Tuoyu Cao

IPC: G06K9/00 ,  G06T11/00 ,  G01T1/17 ,  G01T1/40

CPC classification number: G06T11/008 ,  G01T1/17 ,  G01T1/40 ,  G06K9/0053

Abstract: A radiation detection system includes a detector unit and at least one processor. The detector unit is configured to generate signals responsive to radiation. The at least one processor is operably coupled to the detector unit and configured to receive the signals from the detector unit. The at least one processor is configured to obtain, during an imaging process, a first count for at least one of the signals corresponding to a first intrinsic energy window, the first energy window corresponding to values higher than an intrinsic peak value; obtain a second count for the at least one of the signals corresponding to a second intrinsic energy window, the second energy window corresponding to values lower than the intrinsic peak value; and adjust a gain applied to the signals based on at least the first count and the second count.

公开(公告)号：US09508165B1

公开(公告)日：2016-11-29

申请号：US14755536

申请日：2015-06-30

Applicant: General Electric Company

Inventor： Floribertus P. M. Heukensfeldt Jansen ,  Chang Lyong Kim ,  Mark David Fries ,  Timothy Wayne Deller ,  Mohammad Mehdi Khalighi

IPC: G06K9/00 ,  G06T11/00

CPC classification number: G06K9/0053 ,  G01T1/17 ,  G01T1/40

Abstract: A radiation detection system includes a detector unit and at least one processor. The detector unit is configured to generate signals responsive to radiation events. The at least one processor receives the signals, and is configured to obtain a first count for at least one of the signals corresponding to a first energy window, the first energy window corresponding to values higher than a nominal peak value; obtain a second count for the at least one of the signals corresponding to a second energy window, the second energy window corresponding to values lower than the nominal peak value; obtain at least one auxiliary count for the at least one of the signals corresponding to at least one auxiliary energy window; and adjust a gain applied to the signals based on the first count, the second count, and the at least one auxiliary count.

Abstract translation: 辐射检测系统包括检测器单元和至少一个处理器。 检测器单元被配置为产生响应于辐射事件的信号。 所述至少一个处理器接收所述信号，并且被配置为获得对应于第一能量窗口的信号中的至少一个的第一计数，所述第一能量窗对应于高于标称峰值的值; 获得对应于第二能量窗口的信号中的至少一个信号的第二计数，所述第二能量窗对应于低于标称峰值的值; 获得与至少一个辅助能量窗对应的至少一个信号的至少一个辅助计数; 并且基于所述第一计数，所述第二计数和所述至少一个辅助计数来调整施加到所述信号的增益。

公开(公告)号：US20150001399A1

公开(公告)日：2015-01-01

申请号：US13929006

申请日：2013-06-27

Applicant: General Electric Company

Inventor： Mark David Fries ,  David Leo McDaniel

IPC: G01T1/208 ,  G01T1/29 ,  G01T1/202

CPC classification number: G01T1/2985 ,  G01T1/161 ,  G01T1/1647 ,  G01T1/172

Abstract: A multiplexing circuit for a positron emission tomography (PET) detector includes a delay circuit and a multiplexer communicating with the delay circuit. The delay circuit configured to receive a plurality of timing pickoff (TPO) signals from a plurality of positron emission tomography (PET) detector units, add a delay time to at least one of the plurality of TPO signals, and transmit the TPO signals based on the delay time to the multiplexer, the multiplexer configured to a multiplex the TPO signals and output a single TPO signal from the plurality of TPO signals to a Time-to-Digital Convertor (TDC). A method of operating a multiplexer and a imaging system including a multiplexer are also provided.

Abstract translation: 用于正电子发射断层摄影（PET）检测器的复用电路包括延迟电路和与延迟电路通信的复用器。 所述延迟电路被配置为从多个正电子发射断层摄影（PET）检测器单元接收多个定时检测（TPO）信号，将延迟时间添加到所述多个TPO信号中的至少一个，并且基于 多路复用器的延迟时间，多路复用器被配置为对TPO信号进行复用，并将单个TPO信号从多个TPO信号输出到时间到数字转换器（TDC）。 还提供了一种操作多路复用器和包括多路复用器的成像系统的方法。