公开(公告)号：US20180372822A1

公开(公告)日：2018-12-27

申请号：US15630334

申请日：2017-06-22

Applicant: General Electric Company

Inventor： Changlyong Kim ,  Albert Taesung Byun

IPC: G01R33/48 ,  G01T1/164 ,  A61B6/03 ,  G01T1/29 ,  G01T1/16 ,  H01J40/14

Abstract: A multichannel ASIC for interfacing with an array of photodetectors in a PET imaging system includes a front-end circuit configured to be coupled to the array of photodetectors and to receive analog signals therefrom. The ASIC includes a time discriminating circuit including a low input impedance amplifier configured to be coupled to the array of photodetectors and to receive a signal summing the analog signals from the array of photodetectors and to generate a hit signal for timing pickoff based on the signal. The ASIC includes an energy circuit operably coupled to the front-end circuit and configured to generate a summed energy output signal based on each of the analog signals and summed positional output signal based on each of the analog signals.

公开(公告)号：US09405023B2

公开(公告)日：2016-08-02

申请号：US13764960

申请日：2013-02-12

Applicant: General Electric Company

Inventor： Jianjun Guo ,  Sergei Ivanovich Dolinsky ,  Changlyong Kim ,  James Lindgren Malaney ,  David Leo McDaniel ,  William Peterson

IPC: H01J40/14 ,  H01L27/00 ,  G01T1/29 ,  G01T1/16 ,  G01T1/164 ,  A61B6/03 ,  G01R33/48

CPC classification number: G01T1/2985 ,  A61B6/037 ,  G01R33/481 ,  G01T1/1603 ,  G01T1/1647

Abstract: A multichannel application specific integrated circuit (ASIC) for interfacing with an array of photodetectors in a positron emission tomography (PET) imaging system includes a front end circuit configured to be coupled to the photodetectors and to receive discrete analog signals therefrom. The ASIC further includes a time discriminating circuit operably coupled to the front end circuit and configured to generate a hit signal based on a combination of the discrete analog signals, and an energy discriminating circuit operably coupled to the front end circuit and configured to generate a summed energy output signal based on each of the discrete analog signals and summed row and column output signals based on each of the discrete analog signals. The summed energy output signal represents an energy level of the detected radiation in the array of photodetectors, and the summed row and column output signals represent a location of the detected radiation.

Abstract translation: 用于与正电子发射断层摄影（PET）成像系统中的光电检测器阵列接口的多通道专用集成电路（ASIC）包括被配置为耦合到光电检测器并从其接收分立的模拟信号的前端电路。 ASIC还包括时间鉴别电路，其可操作地耦合到前端电路并且被配置为基于离散模拟信号的组合产生命中信号，以及能量鉴别电路，其可操作地耦合到前端电路并且被配置为生成相加的 基于每个离散模拟信号的能量输出信号和基于每个离散模拟信号的相加的行和列输出信号。 相加的能量输出信号表示光电检测器阵列中检测到的辐射的能级，并且相加的行和列输出信号表示检测到的辐射的位置。

公开(公告)号：US20140224963A1

公开(公告)日：2014-08-14

申请号：US13764960

申请日：2013-02-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Jianjun Guo ,  Sergei Ivanovich Dolinsky ,  Changlyong Kim ,  James Lindgren Malaney ,  David Leo McDaniel ,  William Peterson

IPC: G01T1/29

CPC classification number: G01T1/2985 ,  A61B6/037 ,  G01R33/481 ,  G01T1/1603 ,  G01T1/1647

Abstract: A multichannel application specific integrated circuit (ASIC) for interfacing with an array of photodetectors in a positron emission tomography (PET) imaging system includes a front end circuit configured to be coupled to the photodetectors and to receive discrete analog signals therefrom. The ASIC further includes a time discriminating circuit operably coupled to the front end circuit and configured to generate a hit signal based on a combination of the discrete analog signals, and an energy discriminating circuit operably coupled to the front end circuit and configured to generate a summed energy output signal based on each of the discrete analog signals and summed row and column output signals based on each of the discrete analog signals. The summed energy output signal represents an energy level of the detected radiation in the array of photodetectors, and the summed row and column output signals represent a location of the detected radiation.

Abstract translation: 用于与正电子发射断层摄影（PET）成像系统中的光电检测器阵列接口的多通道专用集成电路（ASIC）包括被配置为耦合到光电检测器并从其接收分立的模拟信号的前端电路。 ASIC还包括时间鉴别电路，其可操作地耦合到前端电路并且被配置为基于离散模拟信号的组合产生命中信号，以及能量鉴别电路，其可操作地耦合到前端电路并且被配置为生成相加的 基于每个离散模拟信号的能量输出信号和基于每个离散模拟信号的相加的行和列输出信号。 相加的能量输出信号表示光电检测器阵列中检测到的辐射的能级，并且相加的行和列输出信号表示检测到的辐射的位置。