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21.发明授权Systems and methods for correcting detector errors in computed tomography imaging 有权用于校正计算机断层摄影成像中检测器误差的系统和方法公开(公告)号：US09220469B2
公开(公告)日：2015-12-29
申请号：US14145018
申请日：2013-12-31
Applicant: General Electric Company
Inventor： Yannan Jin , Peter Michael Edic , Vladimir A. Lobastov , Hewei Gao , Geng Fu
CPC classification number: A61B6/4241 , A61B6/032 , A61B6/482 , G01T1/171
Abstract: A system includes an energy-discriminating, photon-counting X-ray detector, comprising a plurality of detector cells adapted to produce projection data in response to X-ray photons and to produce an electrical signal having a recorded count for the energy bins and a total energy intensity. The system also includes data processing circuitry adapted to receive the electrical signal, to generate a simulated count rate for each of the energy bins by using the total energy intensity, to determine a set of energy intensity dependent material decomposition vectors, and, for the measured projection data, to perform material decomposition.
Abstract translation: 一种系统包括能量鉴别光子计数X射线检测器，其包括多个检测器单元，其适于响应于X射线光子产生投影数据并产生具有针对能量仓的记录计数的电信号，以及 总能量强度。 该系统还包括适于接收电信号的数据处理电路，通过使用总能量强度来产生每个能量箱的模拟计数率，以确定一组依赖于能量强度的材料分解向量，并且对于所测量的 投影数据，进行物质分解。
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公开(公告)号：US10827992B2
公开(公告)日：2020-11-10
申请号：US16511218
申请日：2019-07-15
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Yannan Jin , Peter Michael Edic , Xue Rui , Geng Fu
Abstract: The present approaches relates to the use of silicon-based energy-discriminating, photon-counting detectors, such as for use in X-ray based imaging including computed tomography. The described approaches address the resolution and classification of X-ray photons affected by Compton scatter, which may be detected as having energy levels below their proper level due to collision or deflection events.
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23.发明授权公开(公告)号：US10261201B2
公开(公告)日：2019-04-16
申请号：US15090156
申请日：2016-04-04
Applicant: General Electric Company
Abstract: A method for determining depth-of-interaction correction in a PET system. The method includes modifying crystal and readout configuration to improve depth-dependent arrival profile of scintillation photons, creating a photon dispersion model within a scintillator crystal, measuring photon arrival profile of individual gamma ray event, deriving an estimated depth-of-interaction, and deriving a gamma ray event time based on a time stamp corrected with the estimated depth-of-interaction. The method further includes modeling dispersion at different depths of interaction within the scintillator crystal, providing a reflector layer to delay back-reflected photons, providing two respective readouts for the same gamma ray event from two respective pixels optically coupled by a backside reflector or modified crystal configuration, calculating a time difference of the photon arrival at the two pixels, and estimating the depth-of-interaction by applying a statistical weighting.
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公开(公告)号：US10119924B2
公开(公告)日：2018-11-06
申请号：US15087560
申请日：2016-03-31
Applicant: General Electric Company
Inventor： Xue Rui , Geng Fu , Jianjun Guo , Bruno Kristiaan Bernard De Man , Brian David Yanoff
IPC: G01N23/046 , G01T1/17 , G01T1/29 , G01N23/083
Abstract: The present approach relates to a detector design that allows detector-based wobble using an electronic control scheme. In one implementation, each detector pixel is divided into sub-pixels. The readout of the sub-pixels can be binned with minimal noise penalty to enable the detector wobble without physically shifting the detector or alternating the physical focal spot location, though, as discussed herein alternation of the focal spot location may be used in conjunction with the present approach to further improve radial and longitudinal imaging resolution as well as suppressing artifacts resulted by limited spatial sampling.
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公开(公告)号：US20180259657A1
公开(公告)日：2018-09-13
申请号：US15457558
申请日：2017-03-13
Applicant: General Electric Company
Inventor： Geng Fu , Xue Rui , Yannan Jin , Jianjun Guo , Peter Michael Edic , Brian David Yanoff
Abstract: The present approach relates to the use of reference pixels provided between the primary pixels of a detector panel. Coincidence circuitry or logic may be employed so that the measured signal arising from the same X-ray event may be properly, that is the signal measured at both a reference and primary pixel may be combined so as to provide an accurate estimate of the measured signal, at an appropriate location on the detector panel.
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Patent Agency Ranking
公开(公告)号：US20180217275A1
公开(公告)日：2018-08-02
申请号：US15422833
申请日：2017-02-02
Applicant: General Electric Company
Inventor： Geng Fu , Hua Qian , Hao Lai , Jianjun Guo , Adrian Ivan , Brian Yanoff
CPC classification number: G01T1/2018 , G01T1/208
Abstract: A silicon photomultiplier (SiPM) based detection system includes a plurality of scintillators, SiPMs, a front end circuit, adjustment circuits, and an energy and position processing unit. The SiPMs have a non-linear response to energy deposition corresponding to radiation detection. The adjustment circuit is configured to receive an analog signal from SiPMs, and to provide an adjusted analog signal, which is configured to simulate a signal corresponding to a linear response. The energy and position processing unit utilizes the adjusted signal to provide energy and position information of detected events in the detector block.
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公开(公告)号：US09817134B1
公开(公告)日：2017-11-14
申请号：US15262477
申请日：2016-09-12
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Geng Fu , Floribertus P M Heukensfeldt Jansen , Hua Qian , Xiao Jin , Jianjun Guo
IPC: G01T1/20
CPC classification number: G01T1/2018
Abstract: Embodiments of the invention are utilized to improve the timing performance of SiPM based PET detectors with light-sharing configuration. The universal readout design utilizes adaptive group readout to process noisy and slow signals generated by SiPM devices, and provides enhanced timing capabilities with simplified readout electronics.
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公开(公告)号：US20170212253A1
公开(公告)日：2017-07-27
申请号：US15004127
申请日：2016-01-22
Applicant: General Electric Company
Inventor： Geng Fu , Peter Michael Edic , Brian David Yanoff , Jianjun Guo , Xin Wang , Bruno Kristiaan Bernard De Man , Xue Rui , Yannan Jin
IPC: G01T1/24 , G01T1/20 , A61B6/03 , H01L27/146
CPC classification number: G01T1/247 , A61B6/032 , A61B6/4233 , A61B6/4241 , A61B6/4291 , G01T1/17 , G01T1/2018 , H01L27/14658
Abstract: A detector panel is described having readout circuitry integrated with the photodetectors, such as in the light imager panel. The detector is useful in high spatial resolution and low-dose or low-signal imaging contexts and may be used in adaptive 2D binning configurations. Adaptive binning of detector elements may be accomplished using control logic and X-ray intensity detector circuitry capable of assessing an incident X-ray intensity and controlling binning of an associated group of detector elements.
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公开(公告)号：US20170086761A1
公开(公告)日：2017-03-30
申请号：US14868826
申请日：2015-09-29
Applicant: General Electric Company
Inventor： Geng Fu , Peter Michael Edic , Brian David Yanoff , Jianjun Guo , Vladimir A. Lobastov , Yannan Jin
CPC classification number: A61B6/4241 , A61B6/032 , A61B6/4208 , A61B6/4233 , A61B6/4435 , A61B6/4441 , A61B6/461 , A61B6/467 , A61B6/5205 , A61B6/54
Abstract: Some embodiments are associated with an input signal comprising a first and a second photon event incident on a photon-counting semiconductor detector. A relatively slow charge collection shaping amplifier may receive the input signal and output an indication of a total amount of energy associated with the superposition of the first and second events. A relatively fast charge collection shaping amplifier may receive the input signal and output an indication that is used to allocate a first portion of the total amount of energy to the first event and a second portion of the total amount of energy to the second event.
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公开(公告)号：US09207334B1
公开(公告)日：2015-12-08
申请号：US14586050
申请日：2014-12-30
Applicant: General Electric Company
Inventor： Mikiko Ito , David Leo McDaniel , Sergei Ivanovich Dolinsky , Geng Fu
CPC classification number: G01T1/2985 , G01T1/2018 , G01T1/208
Abstract: Methods and systems for a light sensor for a gamma ray detector of a positron emission tomography (PET) imaging system is provided. The methods and systems include a plurality of micro-cells forming a micro-cell array. The methods and systems include a set of signal traces electrically coupling the plurality of micro-cells to the pin-out. The set of signal traces are configured to define a non-orthogonal signal path from each of the micro-cells to the pin-out.
Abstract translation: 提供了用于正电子发射断层摄影（PET）成像系统的γ射线检测器的光传感器的方法和系统。 所述方法和系统包括形成微电池阵列的多个微电池。 方法和系统包括将多个微电池电耦合到引脚输出的一组信号迹线。 该组信号迹线被配置为定义从每个微小区到引脚输出的非正交信号路径。
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