公开(公告)号：US20190101657A1

公开(公告)日：2019-04-04

申请号：US16208039

申请日：2018-12-03

Applicant: General Electric Company

Inventor： Arie Shahar

IPC: G01T1/24 ,  H01L27/146

Abstract: A detector assembly is provided that includes a semiconductor detector, a pinhole collimator, and a processing unit. The semiconductor detector has a first surface and a second surface opposed to each other. The first surface includes pixelated anodes. The pinhole collimator includes an array of pinhole openings corresponding to the pixelated anodes. Each pinhole opening corresponds to a corresponding group of pixelated anodes. The processing unit is operably coupled to the semiconductor detector and configured to identify detected events from the pixelated anodes. The processing unit is configured to generate a trigger signal responsive to a given detected event in a given pixelated anode, provide the trigger signal to a readout, and, using the readout, read and sum signals arriving from the given pixelated anode and anodes surrounding the given pixelated anode.

公开(公告)号：US09482764B1

公开(公告)日：2016-11-01

申请号：US14724022

申请日：2015-05-28

Applicant: General Electric Company

Inventor： Arie Shahar ,  Avishai Ofan ,  Yaron Glazer ,  Jeffrey Michael Levy

IPC: G01D18/00 ,  G12B13/00 ,  G01T7/00 ,  G01T1/24 ,  G01T1/29

CPC classification number: G01T7/005 ,  G01T1/24 ,  G01T1/241 ,  G01T1/247 ,  G01T1/2928

Abstract: A radiation detector system is provided including a semiconductor detector, plural pixelated anodes, and at least one processor. At least one of the pixelated anodes is configured to generate a collected charge signal corresponding to charge collected by the pixelated anode and to generate a non-collected charge signal corresponding to charge collected by an adjacent anode. The at least one processor includes a tangible and non-transitory memory having stored thereon instructions configured to direct the at least one processor to determine a collected value for the collected charge signal, to determine a non-collected value for the non-collected charge signal, determine a calibrated value for the non-collected charge signal, determine a total charge produced by a charge sharing event using the collected value and the calibrated value, and count the charge sharing event as a single event if the total charge exceeds a predetermined value.

Abstract translation: 提供了包括半导体检测器，多个像素化阳极和至少一个处理器的辐射检测器系统。 像素化阳极中的至少一个被配置为产生对应于由像素化阳极收集的电荷的收集的电荷信号，并且产生对应于由相邻阳极收集的电荷的非收集的电荷信号。 所述至少一个处理器包括有形和非暂时存储器，其中存储有指令，所述指令被配置为引导所述至少一个处理器确定所收集的充电信号的收集值，以确定所收集的非充电信号的非收集值 确定未收集的充电信号的校准值，使用所收集的值和校准值确定由电荷共享事件产生的总电荷，并且如果总电荷超过预定值，则将电荷共享事件计数为单个事件 。

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：US09002084B2

公开(公告)日：2015-04-07

申请号：US14014726

申请日：2013-08-30

Applicant: General Electric Company

Inventor： Arie Shahar ,  Eliezer Traub ,  Peter Rusian ,  Yaron Glazer ,  Danny Magal ,  Zeev Gerber

IPC: G06K9/00 ,  G01T1/164

CPC classification number: G01J1/4228 ,  G01J2001/442 ,  G01T1/164 ,  G01T1/1647

Abstract: A system includes a detector and a processing module. The detector includes pixels configured to detect an event corresponding to energy from a radiopharmaceutical. The processing module is configured to receive a request for each pixel that detects energy during a reading cycle. The processing module is configured to determine an energy level for each requesting pixel. For each requesting pixel, the processing module is configured to count the event when the energy level corresponds to an energy of the radiopharmaceutical, and to determine a combined energy level of the pixel and at least one adjacent pixel when the energy level does not correspond. The processing module is configured to count the event when the combined energy level corresponds to the energy of the radiopharmaceutical, and to disregard the event when the combined energy level does not correspond to the energy of the radiopharmaceutical.

Abstract translation: 系统包括检测器和处理模块。 检测器包括被配置为检测与来自放射性药物的能量相对应的事件的像素。 处理模块被配置为接收在读取周期期间检测能量的每个像素的请求。 处理模块被配置为确定每个请求像素的能级。 对于每个请求像素，处理模块被配置为当能量水平对应于放射性药物的能量时对事件进行计数，并且当能级不对应时确定像素和至少一个相邻像素的组合能级。 所述处理模块被配置为当所述组合能级对应于所述放射性药物的能量时对所述事件进行计数，以及当所述组合能级与所述放射性药物的能量不对应时，忽视所述事件。

公开(公告)号：US10481285B1

公开(公告)日：2019-11-19

申请号：US16102228

申请日：2018-08-13

Applicant: General Electric Company

Inventor： Arie Shahar ,  Yaron Glazer ,  Moshe Cohen-Erner ,  Avishai Ofan

IPC: G01T7/00 ,  G01T1/24

Abstract: A detector assembly is provided that includes a semiconductor detector, plural pixelated anodes, and at least one processor. The plural pixelated anodes are disposed on a surface of the semiconductor detector. Each pixelated anode is configured to generate a primary signal responsive to reception of a photon and to generate at least one secondary signal responsive to an induced charge caused by reception of a photon by at least one surrounding anode. The at least one processor is operably coupled to the pixelated anodes and is configured to acquire a primary signal from one of the anodes responsive to reception of a photon; acquire at least one secondary signal from at least one neighboring pixel; and determine a depth of interaction in the semiconductor detector for the reception of the photon by the one of the anodes using the at least one secondary signal.

公开(公告)号：US20190204459A1

公开(公告)日：2019-07-04

申请号：US15860325

申请日：2018-01-02

Applicant: General Electric Company

Inventor： Arie Shahar ,  Jean-Paul Bouhnik ,  Moshe Cohen-Erner

IPC: G01T1/24

CPC classification number: G01T1/247 ,  G01T1/241 ,  G01T1/2928

Abstract: The systems and methods receive signals from pixelated anodes for at least one event, and pass the signals from the pixelated anodes through corresponding channel pairs, attenuate the signal from a plurality of select anodes at the first and second shaper circuits coupled to the plurality of the select anodes to form a candidate energy signals and an authentication energy signals, respectively, compare a ratio to identify whether the select anode is a collected energy signal or a non-collected energy signal, repeat the attenuating and comparing operations for a plurality of select anodes have one or more collecting anode and a plurality of peripheral anodes, subdivide the collecting anode having the collected energy signal into a plurality of sub-pixels, and identify a location of the at least one event relative to the plurality of sub-pixels based on non-collected energy signals from the plurality of peripheral anodes.

公开(公告)号：US10324202B1

公开(公告)日：2019-06-18

申请号：US15860325

申请日：2018-01-02

Applicant: General Electric Company

Inventor： Arie Shahar ,  Jean-Paul Bouhnik ,  Moshe Cohen-Erner

IPC: G01T1/24

CPC classification number: G01T1/247 ,  G01T1/241 ,  G01T1/2928

Abstract: The systems and methods receive signals from pixelated anodes for at least one event, and pass the signals from the pixelated anodes through corresponding channel pairs, attenuate the signal from a plurality of select anodes at the first and second shaper circuits coupled to the plurality of the select anodes to form a candidate energy signals and an authentication energy signals, respectively, compare a ratio to identify whether the select anode is a collected energy signal or a non-collected energy signal, repeat the attenuating and comparing operations for a plurality of select anodes have one or more collecting anode and a plurality of peripheral anodes, subdivide the collecting anode having the collected energy signal into a plurality of sub-pixels, and identify a location of the at least one event relative to the plurality of sub-pixels based on non-collected energy signals from the plurality of peripheral anodes.

公开(公告)号：US09941327B2

公开(公告)日：2018-04-10

申请号：US15437628

申请日：2017-02-21

Applicant: General Electric Company

Inventor： Arie Shahar ,  Eliezer Traub ,  Israel Altman

IPC: H01L27/146 ,  H01L27/144 ,  G01T1/24

CPC classification number: H01L27/1469 ,  G01T1/24 ,  G01T1/243 ,  H01L27/144 ,  H01L27/1446 ,  H01L27/146 ,  H01L27/14618 ,  H01L27/14659 ,  H01L27/14685

Abstract: A detector module for detecting photons includes a detector formed from a semiconductive material, the detector having a first surface, an opposing second surface, and a plurality of sidewalls extending between the first and second surfaces, and a guard band coupled to the sidewalls, the guard band having a length that extends about a circumference of the detector, the guard band having a width that is greater than a thickness of the detector such that an upper rim segment of the guard band projects beyond the first surface of the detector, the upper rim segment being folded over a peripheral region of the first surface along the circumference of the detector, the guard band configured to reduce recombinations proximate to the edges of the detector.

公开(公告)号：US09891328B2

公开(公告)日：2018-02-13

申请号：US14871033

申请日：2015-09-30

Applicant: General Electric Company

Inventor： Arie Shahar ,  Avishai Ofan ,  Jeffrey Michael Levy ,  Moshe Cohen-Erner ,  Yaron Glazer

IPC: G01T1/24 ,  H04N5/347 ,  H01L27/146

CPC classification number: G01T1/247 ,  G01T1/17 ,  H01L27/146 ,  H01L27/14605 ,  H04N5/347

Abstract: A radiation detector processing assembly is provided including at least one application specific integrated circuit (ASIC). The radiation detector processing assembly includes plural input channels, a common readout, and a readout channel. Each input channel is configured to receive an input corresponding to a detection event from a pixel of a pixelated detector. The common readout is operably coupled to the plural input channels, and is configured to receive a corresponding output signal from each input channel. Each corresponding output signal has a unique address identifying the corresponding input channel. The readout channel is configured to receive a corresponding readout output from the common readout. The readout output includes output signals from a corresponding group of input channels.

公开(公告)号：US09746565B2

公开(公告)日：2017-08-29

申请号：US14994895

申请日：2016-01-13

Applicant: General Electric Company

Inventor： Arie Shahar

IPC: G01T1/24

CPC classification number: G01T1/24 ,  G01T1/249

Abstract: A method is provided including acquiring detection events with a radiation detector that includes a semiconductor plate. Electrons and holes are generated in the semiconductor plate responsive to absorption of ionizing radiation. The holes including groups of holes having different effective masses for corresponding different valence energy bands. The method also includes optically coupling infrared (IR) radiation into the semiconductor plate of the radiation detector. The IR radiation has at least one wavelength selected from a spectral range including wavelengths to which the semiconductor plate is partially transparent. The wavelengths of the IR radiation are configured to excite at least some of the holes from a first group at a first valence energy band to a second group at a second valence energy band, with the holes of the second group having lower effective masses than corresponding holes of the first group.