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公开(公告)号：US10571579B2
公开(公告)日：2020-02-25
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：US10507005B2
公开(公告)日：2019-12-17
申请号：US15273043
申请日：2016-09-22
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Yannan Jin , Geng Fu , Peter M. Edic , Hewei Gao
Abstract: There is set forth herein a method including performing with an X-ray detector array of a CT imaging system one or more calibration scans, wherein the one or more calibration scans include obtaining for each element of the first through Nth elements of the X-ray detector array one or more calibration measurements; and updating a spectral response model for each element of the first through Nth elements using the one or more calibration measurements. In another aspect, a CT imaging system can perform imaging, e.g. including material decomposition (MD) imaging, using updated spectral response models for elements of an X-ray detector array. The spectral response models can be updated using a calibration process so that different elements of an X-ray detector array have different spectral response models.
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公开(公告)号：US20190336091A1
公开(公告)日：2019-11-07
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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公开(公告)号：US10371835B2
公开(公告)日：2019-08-06
申请号：US14992635
申请日：2016-01-11
Applicant: General Electric Company
Inventor： Jianjun Guo , Adrian Ivan , Sergei Ivanovich Dolinsky , Geng Fu
IPC: G01T1/24 , H01L27/146 , G01T1/208
Abstract: A silicon photomultiplier array including a plurality of microcells arranged in rows and columns. A plurality of circuit traces connecting microcell output ports to the array pixel output port, with one or more impedance matching networks connected to at least one of the circuit traces. The impedance matching networks can be connected between each row circuit trace and the pixel output port. Impedance matching networks can be located between junctions of adjacent microcell output ports and row circuit traces.
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公开(公告)号：US10162066B2
公开(公告)日：2018-12-25
申请号：US15425800
申请日：2017-02-06
Applicant: General Electric Company
Inventor： Geng Fu , Yannan Jin , Peter Michael Edic , Feng Chen
Abstract: The present approach relates to the use of energy-resolved, photon-counting detectors, such as CZT- or CdTe-based detectors, to acquire spectral information that is not available with conventional energy-integrating detectors. In certain embodiments, the present approach discussed reduces or eliminates spectral contamination incurred by transient signals in neighboring pixels in designs employing coincidence logic and shaping amplifiers with short shaping times.
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Patent Agency Ranking
公开(公告)号：US20180224564A1
公开(公告)日：2018-08-09
申请号：US15425800
申请日：2017-02-06
Applicant: General Electric Company
Inventor： Geng Fu , Yannan Jin , Peter Michael Edic , Feng Chen
IPC: G01T1/24
CPC classification number: G01T1/247 , G01T1/17 , G01T1/2928
Abstract: The present approach relates to the use of energy-resolved, photon-counting detectors, such as CZT- or CdTe-based detectors, to acquire spectral information that is not available with conventional energy-integrating detectors. In certain embodiments, the present approach discussed reduces or eliminates spectral contamination incurred by transient signals in neighboring pixels in designs employing coincidence logic and shaping amplifiers with short shaping times.
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公开(公告)号：US09851455B2
公开(公告)日：2017-12-26
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
IPC: G01T1/24
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.
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公开(公告)号：US10779778B2
公开(公告)日：2020-09-22
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：US10679385B1
公开(公告)日：2020-06-09
申请号：US16221606
申请日：2018-12-17
Applicant: General Electric Company
Inventor： Brian David Yanoff , Mingye Wu , Lin Fu , Peter Michael Edic , Xue Rui , Geng Fu , Yannan Jin , Fredrik Gronberg
Abstract: A method for imaging an object to be reconstructed includes acquiring projection data corresponding to the object. Furthermore, the method includes generating a measured sinogram based on the acquired projection data and formulating a forward model, where the forward model is representative of a characteristic of the imaging system. In addition, the method includes generating an estimated sinogram based on an estimated image of the object and the forward model and formulating a statistical model based on at least one of pile-up characteristics and dead time characteristics of a detector of the imaging system. Moreover, the method includes determining an update corresponding to the estimated image based on the statistical model, the measured sinogram, and the estimated sinogram and updating the estimated image based on the determined update to generate an updated image of the object. Additionally, the method includes outputting a final image of the object.
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公开(公告)号：US10466368B2
公开(公告)日：2019-11-05
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
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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