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公开(公告)号：US20180317869A1
公开(公告)日：2018-11-08
申请号：US15589412
申请日：2017-05-08
Applicant: General Electric Company
Inventor： Xue Rui , Geng Fu , Yannan Jin , Jianjun Guo , Peter Michael Edic , Brian David Yanoff
Abstract: The present approach relates to the use of detector elements (i.e., reference detector pixels) positioned under septa of an anti-scatter collimator. Signals detected by the reference detector pixels may be used to correct for charging-sharing events with adjacent pixels and/or to characterize or correct for focal spot misalignment either in real time or as a calibration step.
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公开(公告)号：US20180192977A1
公开(公告)日：2018-07-12
申请号：US15400798
申请日：2017-01-06
Applicant: General Electric Company
Inventor： Yannan Jin , Peter Michael Edic , Xue Rui , Geng Fu
CPC classification number: A61B6/4241 , A61B6/032 , A61B6/481 , A61B6/482 , A61B6/5205 , A61B6/5217 , A61B6/5282 , A61B6/585 , G01T1/2985 , G01T1/36 , G01V5/0016 , G06T11/006 , G06T2211/408
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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公开(公告)号：US09945965B2
公开(公告)日：2018-04-17
申请号：US15228300
申请日：2016-08-04
Applicant: General Electric Company
Inventor： Geng Fu , Adrian Ivan , Jianjun Guo , Hao Lai , Hua Qian , Xiao Jin
CPC classification number: G01T1/2018
Abstract: A SiPM readout circuit includes a front-end circuit having amplifiers coupled to SiPM analog outputs, pixel readout channels coupled to amplifiers provide a timing signal representing gamma ray photon detection in individual SiPM, a block timing channel that creates a summed signal from all SiPMs, and generates a block timing signal and a validation signal, an energy channel that generates a summed energy signal and a two-dimensional position of the gamma ray photon detection in the block, and a control logic/processing circuit that performs a time stamp estimation method. Methods of determining the radiation event timing and a non-transitory computer-readable medium containing computer-readable instructions to implement the methods are disclosed.
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公开(公告)号：US20170212250A1
公开(公告)日：2017-07-27
申请号：US15004214
申请日：2016-01-22
Applicant: General Electric Company
Inventor： Yannan Jin , Geng Fu , Peter Michael Edic , Brian David Yanoff , Jianjun Guo
Abstract: A detector is described having readout electronics integrated in the photodetector layer. The detector may be configured to acquire both energy-integrated and photon-counting data. In one implementation, the detector is also configured with control logic to select between the jointly generated photon-counting and energy-integrated data.
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公开(公告)号：US20160308074A1
公开(公告)日：2016-10-20
申请号：US14688008
申请日：2015-04-16
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Sergei Ivanovich Dolinsky , Jianjun Guo , David Leo McDaniel , Ravindra Mohan Manjeshwar , Geng Fu
CPC classification number: G01T1/247
Abstract: Embodiments of a solid state photomultiplier are provided herein. In some embodiments, a solid state photomultiplier may include a plurality of pixels, wherein each pixel of the plurality of pixels comprises a plurality of subpixels; and a first set of buffer amplifiers, wherein each buffer amplifier of the first set of buffer amplifiers is respectively coupled to a subpixel of the plurality of subpixels.
Abstract translation: 本文提供了固态光电倍增管的实施例。 在一些实施例中，固态光电倍增管可以包括多个像素，其中多个像素中的每个像素包括多个子像素; 以及第一组缓冲放大器，其中第一组缓冲放大器的每个缓冲放大器分别耦合到多个子像素的子像素。
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Patent Agency Ranking
公开(公告)号：US10564299B2
公开(公告)日：2020-02-18
申请号：US15145380
申请日：2016-05-03
Applicant: General Electric Company
Inventor： Geng Fu , Jianjun Guo
Abstract: A SiPM tile includes SiPM arrays on a detector die, each of the SiPM arrays including a first plurality of microcells and a second plurality of reference microcells dispersed on the die, each reference microcell including an optically-opaque mask, a readout circuit each including a respective charge sensitive amplifier (CSA) connected to one of the reference microcells, each CSA configured to accumulate the dark current of the reference microcell during a selected time window, a hybrid temperature control circuit configured to receive an output signal from each CSA, and to determine the real-time temperature of the die based on the received output signal, to provide the real-time temperature to a temperature compensation and correction control unit that adjusts a cooling/heating system flow provided to the die, the adjustment based on the real-time temperature. A method for compensating the operating temperature variation of the SiPM tile is also disclosed.
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公开(公告)号：US10222489B2
公开(公告)日：2019-03-05
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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公开(公告)号：US10117626B2
公开(公告)日：2018-11-06
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
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：US09872664B1
公开(公告)日：2018-01-23
申请号：US15390349
申请日：2016-12-23
Applicant: General Electric Company
CPC classification number: A61B6/5282 , A61B6/032 , A61B6/037 , A61B6/4417 , A61B6/50 , A61B6/5205 , A61B6/54
Abstract: Methods and systems are provided for medical imaging systems. In one embodiment, a method comprises estimating an external scatter contamination in emission data based on an estimated emission activity originating from anatomies outside a field-of-view (FOV) of a scanner, the anatomies identified based on an image segmentation analysis performed on an image generated in the imaging system, the image generated prior to acquiring the emission data. In this way, a scatter correction applied to the emission data may include both scatter originating within the FOV and outside the FOV, and hence may be more accurate.
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公开(公告)号：US20170285188A1
公开(公告)日：2017-10-05
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
CPC classification number: G01N23/046 , G01N23/083 , G01N2223/505 , G01T1/17 , G01T1/2985
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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