General Electric Company

Ge Precision Healthcare LLC

Prismatic Sensors Ab

Teledyne Dalsa B.v.

Teledyne Digital Imaging, Inc.

Biju Jacob

Brian David Yanoff

John Eric Tkaczyk

Douglas Albagli

Jianjun Guo

William Andrew Hennessy

Uwe Wiedmann

Nicholas Ryan Konkle

Remy Klausz

Peter Michael Edic

Habib Vafi

Hao Lai

Jeffery Jon Shaw

Bruno Kristiaan Bernard De Man

James Zhengshe Liu

Jonathan David Short

Xue Rui

Feng Pan

Mark Adamak

Emad Abutabanjeh

Peter William Lorraine

John Michael Sabol

Marc Schaepkens

David Allen Langan

Yun Zou

Katelyn Rose Nye

Yannan Jin

William Robert Ross

Gregory Scott Zeman

Torbjörn Hjärn

Cheng Xu

Mingye Wu

Feng Chen

Katsumasa Nose

Brian Joseph Graves

Jeffrey Jon Shaw

Brian Joseph Breuer

Ibrahim Issoufou Kouada

German Guillermo Vera

Bartholomeus G M H Dillen

Eric Patrick Davis

Inge Peters

Anton Van Arendonk

Remy Andre Klausz

Hengshan Gao

Jonathan Short

Mark Allen Adamak

Barthomlomeus Dillen

Systems and methods are provided for a detector for medical imaging. The detector for medical imaging includes a mesh detector element formed on a planar side of a first semiconductor layer. The mesh detector element includes a metal layer including a plurality of longitudinal strips, where each longitudinal strip is positioned over a respective second semiconductor layer of the opposite doping polarity from the first semiconductor layer, and embedded in the first semiconductor layer. Further, each longitudinal strip is separated from a neighboring longitudinal strip by a respective opening of a plurality of openings, such that the metal layer does not extend continuously across a width of the mesh detector element.

Medical imaging detector

There is provided an X-ray imaging system having an X-ray source, an X-ray detector and a collimator assembly in the X-ray path between the X-ray source and the X-ray detector. The X-ray detector comprises a plurality of detector modules arranged side-by-side and adapted to be oriented towards the X-ray source, the detector modules being arranged side-by-side along a direction substantially orthogonal to the direction of incoming X-rays. The collimator assembly is based on a plurality of spaced collimator plates arranged side-by-side in a direction coinciding with the direction of the detector modules. The collimator assembly further comprises a physically stabilizing lateral support structure arranged in a lateral plane extending in a direction substantially orthogonal to the direction of incoming X-rays.

Collimator assembly for an X-ray detector

A phase-contrast imaging detector includes a plurality of pixels. Each pixel includes a detection material that generates a measurable parameter in response to X-ray photons. Each pixel also includes a plurality of sub-pixel resolution readout structures. The sub-pixel resolution readout structures are in an alternating pattern with a spacing therebetween that is larger than a frequency of a phase-contrast interference pattern but small enough to enable charge sharing between adjacent sub-pixel resolution readout structures when an X-ray photon hits between the adjacent sub-pixel resolution readout structures. The phase-contrast imaging detector also includes readout circuitry configured to read out signals from the plurality of sub-pixel readout structures. The plurality of sub-pixel resolution readout structures includes two or more electrodes having alternating arms that form an interleaved comb structure.

High-resolution detector having a reduced number of pixels

An X-ray detector is provided. The X-ray detector includes multiple detector sub-modules. Each detector sub-module includes a semiconductor layer and multiple detector elements. A plurality of detector elements is disposed on the semiconductor layer. Wiring traces extending from the plurality of detector elements to readout circuitry, where each detector element is coupled to a respective wiring trace. One or more of the wiring traces extend over one or more detector elements of the plurality of detector elements. Processing circuitry is configured to perform coincidence detection to determine which detector element of the plurality of detector elements is associated with a location of an X-ray hit when the X-ray coincidently hits one of the detector elements of the plurality of detector elements and one or more of the wiring traces coupled to respective detector elements of the plurality of detector elements.

System and method for mitigating trace triggering of channels in X-ray detector

A method for estimating motion of an X-ray focal spot is provided. The acts of the method include acquiring image data by causing X-rays to be emitted from the X-ray focal spot of an X-ray source toward a radiation detector comprising multiple channels, wherein a subset of the channels each have a collimator blade positioned above the respective channel. The acts of the method also include independently estimating X-ray focal spot motion in an X-direction for the X-ray focal spot relative to an isocenter of the radiation detector and in a Y-direction along a direction of the X-rays for the X-ray focal spot relative to the isocenter based on respective channel gains for a first channel and a second channel of the subset of the channels.

Systems and methods for focal spot motion detection in both x- and y-directions and correction

An X-ray detector is provided. The X-ray detector includes multiple detector sub-modules. Each detector sub-module includes a semiconductor layer and multiple detector elements. A plurality of detector elements is disposed on the semiconductor layer. Wiring traces extending from the plurality of detector elements to readout circuitry, where each detector element is coupled to a respective wiring trace. The wiring traces are routed within a gap between adjacent detector elements of the plurality of detector elements. Processing circuitry is configured to perform coincidence detection to determine which detector element of the plurality of detector elements is associated with a location of an X-ray hit when the X-ray coincidently hits one of the detector elements of the plurality of detector elements and one or more of the wiring traces coupled to respective detector elements of the plurality of detector elements.

An X-ray detector is provided. The X-ray detector includes multiple detector sub-modules. Each detector sub-module includes a semiconductor layer and multiple detector elements. A first detector element of the multiple detector elements includes a first electrode disposed on a first doped implant and a second detector element of the multiple detector elements includes a second electrode disposed on a second doped implant. The first and second detector elements are disposed on the semiconductor layer adjacent to each other with a gap therebetween. Each detector sub-module also includes wiring traces extending from one or more detector elements of the multiple detector elements to readout circuitry. The wiring traces are routed within the gap between the first and second electrodes. The first doped implant extends underneath a portion of the wiring traces is configured to shield the wiring traces from electrical activity occurring underneath due to absorption of an X-ray.

System and method for mitigating trace triggering of channels in x-ray detector

The present disclosure relates to fabrication and use of a phase-contrast imaging detector that includes sub-pixel resolution electrodes or photodiodes spaced to correspond to a phase-contrast interference pattern. A system using such a detector may employ fewer gratings than are typically used in a phase-contrast imaging system, with certain functionality typically provided by a detector-side analyzer grating being performed by sub-pixel resolution structures (e.g., electrodes or photodiodes) of the detector. Measurements acquired using the detector may be used to determine offset, amplitude, and phase of a phase-contrast interference pattern without multiple acquisitions at different phase steps.

X-ray phase contrast detector

The present disclosure relates to the use of X-ray detector cassettes that may be abutted or overlapped to form a detector assembly suitable for imaging objects that are too large to image using a single X-ray detector cassette. Such a detector assembly may be customized in terms of the size and/or shape of the field-of-view (FOV). In certain embodiments the radiation-sensitive electronics (e.g., readout electronics) are positioned to the side of the X-ray detecting components (e.g., scintillator, TFT array, and so forth), allowing the cassette to be thin relative to other detector devices and allowing the electronics to remain outside the X-ray beam path.

Tileable X-ray detector cassettes

The techniques disclosed may be used to detect and correct channel gain errors resulting from X-ray focal spot mis-alignment during the course of a scan. One benefit of the present invention relative to conventional techniques is that additional hardware is not required for detection of focal spot drift. Instead, the static mis-alignment of each blade is taken into account as part of estimating and correcting X-ray focal spot drift or mis-alignment. In this manner, the risk of image artefacts due to focal spot motion is reduced and the need for costly hardware solutions to detect focal spot motion is avoided.

Systems and methods for focal spot motion detection and correction

There is provided an x-ray detector having a number of x-ray detector sub-modules. Each detector sub-module is an edge-on detector sub-module having an array of detector elements extending in at least two directions, wherein one of the directions has a component in the direction of incoming x-rays. The detector sub-modules are stacked one after the other and/or arranged side-by-side. For at least part of the detector sub-modules, the detector sub-modules are arranged for providing a gap between adjacent detector sub-modules, where at least part of the gap is not directed linearly towards the x-ray focal point of an x-ray source.

X-ray detector system design

The present disclosure relates to determining the position of an X-ray focal spot in real time during an imaging process and using the focal spot position to ensure alignment of the focal spot and high-aspect detector elements or to correct for focal spot misalignment, thereby mitigating image artifacts. For example, the focal spot position may be monitored and may be adjusted in real-time using electromagnetic electron beam steering during a scan. Alternatively, previously determined functional relationships between focal spot position and measured data may be applied to address or correct for focal spot misalignment in the acquired data.

X-ray imaging system use and calibration

An imager panel for an x-ray detector for obtaining x-ray images of an object is provided that includes a first portion disposed at the center of the hybrid imager panel that can produce images of a first resolution and a second portion disposed at least partially around the first portion that is capable of producing images of a second resolution. The hybrid imager panel provides a hybrid detector that can be selectively operated to obtain images of varying resolutions corresponding to the first resolution from the first portion, the second resolution from the second portion or a combination thereof.

Hybrid X-ray detector structure

A method for X-ray imaging includes determining one or more pre-shot parameters corresponding to a region of interest in a subject based on an optical image of the region of interest obtained from an optical sensor. The method further includes controlling an X-ray device to generate a pre-shot X-ray image using a first X-ray dosage, based on the one or more-pre-shot parameters. The method also includes determining at least one main-shot parameter based on the pre-shot X-ray image. The method includes controlling the X-ray device to generate a main-shot X-ray image using a second X-ray dosage greater than the first X-ray dosage, based on the at least one main-shot parameter.

System and method for mobile X-ray imaging

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Niskayuna, NY, United States of America

Biju Jacob