General Electric Company

Morpho Detection, Inc.

Mropho Detection, Inc.

Ge Inspection Technologies, Gmbh

Scott Stephen Zelakiewicz

John Eric Tkaczyk

Ralph Thomas Hoctor

Floribertus P M Heukensfeldt Jansen

Jeffrey Seymour Gordon

Jeffrey Wayne Eberhard

Douglas Albagli

William Andrew Hennessy

Remy Klausz

Aaron Judy Couture

Yun Zou

Evren Asma

Peter Michael Edic

Samit Kumar Basu

Bruno Kristiaan Bernard De Man

Mark Ernest Vermilyea

Bernhard Erich Hermann Claus

Joseph Bendahan

Vasile Bogdan Neculaes

Uwe Wiedmann

Rowland F Saunders

James Walter LeBlanc

Mark Alan Frontera

Clifford Bueno

Clarence Lavere Gordon, Iii

Jonathan David Short

Forrest Frank Hopkins

Fengfeng Tao

William Robert Ross

Wen Li

Henri Souchay

Christopher David Unger

Xi Zhang

Vivek Walimbe

Floribertus Heukensfeldt Jansen

Snezana Bogdanovich

Timothy Powers

Thomas Edmund Sjoberg

Daniel Bruno McDevitt

Remy Andre Klausz

Rowland Frederick Saunders

A method of continuous motion digital tomosynthesis includes exposing an object to a programed intensity x-ray beam as an x-ray source travels a pre-determined path, accumulating a signal charge from the x-ray beam, recording the accumulated signal charge into a digital frame image representing raw baseline data, acquiring information on the source's and the detector's position when the recording occurs, compressing the raw baseline data into compressed views, where each respective compressed view is formed by combining the raw data readouts of the respective compressed view, and reconstructing a volumetric breast image by processing each respective compressed view with a reconstruction process function that incorporates the acquired position information and a spatial sampling corresponding to the compressed views. A system configured to implement the method and a computer-readable medium are also disclosed.

Systems and methods for continuous motion breast tomosynthesis

In accordance with one aspect of the present system, an X-ray detector of an X-ray imaging system includes a communication module configured to receive a pre-shot image from a detection circuitry and receive one or more pre-shot parameters from a source controller of the X-ray imaging system. The X-ray detector further includes an analysis module configured to determine one or more image characteristics of the pre-shot image. The X-ray detector further includes a determination module configured to calculate one or more main-shot parameters based on the one or more pre-shot parameters and the one or more image characteristics. The determination module is further configured to send the one or more main-shot parameters to the source controller of the X-ray imaging system.

System and method for determining X-ray exposure parameters

An X-ray source comprising a cathode element adapted to generate a stream of electrons. The X-ray source includes an anode element adapted to present a focal spot position for the stream of electrons. A vacuum chamber contains the cathode element and anode element. The anode element and/or the cathode element can be moveable with respect to the other in coordination with the generation of the stream of electrons.

X-ray source with moving anode or cathode

A motion correction system and method for motion correction for an x-ray tube is presented. One embodiment of the motion correction system includes a sensing unit coupled to an x-ray tube to determine a distance with which an impingement location of an electron beam generated by the x-ray tube deviates from a determined location due to motion of the x-ray tube. The motion correction system further includes a control unit coupled to the sensing unit to generate a control signal corresponding to the distance with which the impingement location of the electron beam deviates. Also, the motion correction system includes a deflection unit coupled to the control unit to steer the electron beam to the determined location based on the generated control signal.

Motion correction system and method for an x-ray tube

A coded aperture includes a position sensitive detector configured to observe the location of emitted high energy radiation, and a mask disposed in front of the position sensitive detector, wherein the mask has a non-linear shape configured to define a perimeter around position sensitive detector, wherein the mask comprises a plurality of attenuating and transparent elements of a predetermined configuration, positioned such that the emitted radiation is detected by the position sensitive detector after passage through the mask.

Mask for coded aperture systems

An imaging system includes a platform having mounted thereon an imaging device. The imaging device includes a first detector and a second detector. The imaging system includes a mask having a first pattern of apertures therein, the mask positioned on a first side of the first detector, an anti-mask having a second pattern of apertures therein, wherein the second pattern is derived from the first pattern, the anti-mask positioned on a first side of the second detector, and a computer configured to acquire a plurality of mask datasets and anti-mask datasets of a gamma source, add one of the mask datasets and subtract its respective anti-mask dataset to create a far-field dataset, adjust the far-field image dataset, reconstruct a near-field image of the source using the far-field dataset, and apply an expectation maximization (EM) algorithm to one of the far-field image dataset and the near-field image to enhance contrast.

Method and apparatus for image reconstruction for a synthetic aperture gamma ray imager

An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline, and a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device, form a first image from the plurality of far-field datasets, and form a second image if the first image indicates presence of a source, the second image formed from the plurality of far-field datasets using an estimated source location from the first image and thereby having a higher contrast than the first image.

Apparatus and method for image reconstruction for a synthetic aperture gamma ray imager

Dual modality detection devices and methods are provided for detecting nuclear material, the devices include a neutron detector including multiple neutron detection modules; and a gamma detector including multiple gamma detection modules, where the multiple neutron detection modules and the multiple gamma detection modules are integrated together in a single unit to detect simultaneously both gamma rays and neutrons.

Dual modality detection system of nuclear materials concealed in containers

A detector for identification and localization of radioisotopes, comprising a position sensitive detector configured to observe the location of emitted high energy radiation, wherein the position sensitive detector comprises a surface comprised of a first radiation sensitive material; and an active mask disposed in front of the position sensitive detector positioned such that the emitted high energy radiation is detected by the position sensitive detector after passage through the mask, wherein the mask comprises a second radiation sensitive material.

An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline. The imaging system includes a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device. The computer is also configured to form a preliminary image based on the acquired plurality of far-field datasets, and apply an expectation maximization (EM) algorithm to the preliminary image; wherein the EM algorithm includes an ordered subset algorithm.

A solid-state photomultiplier (SSPM) includes an optical isolation structure therein. The SSPM includes a substrate and an epitaxial diode layer positioned on the substrate. A plurality of avalanche photodiodes (APDs) are fabricated on the epitaxial diode layer and the optical isolation structure is positioned about the plurality of APDs to separate each of the plurality of APDs from adjacent APDs. The optical isolation structure contains at least one of a light absorbing material and a light reflecting material deposited therein to reduce optical crosstalk and dark count rate in the SSPM.

Structure of a solid state photomultiplier

Various configurations for scatter reduction and control are provided for CT imaging. These configurations include an imaging system having a stationary detector extending generally around a portion of an imaging volume and a distributed X-ray source placed proximal to the stationary detector for radiating an X-ray beam toward the stationary detector. A scatter control system is further provided that is configured to adaptively operate in cooperation with the stationary detector and the distributed X-ray source to focally align collimator septa contained therein to the X-ray beam at a given focal point and to provide X-ray beam scatter control.

Scatter control system and method for computed tomography

A photodetector for X-ray applications includes a photodiode at each pixel location that is gated to reduce leakage of charge from the photodiode. A gate layer may be disposed around the entire peripheral edge of the detector, and maintained at a common potential with a contact layer, or at a different potential. A passivation or dielectric layer separates the gate layer from the photodiode. Leakage around the edge of the diode that can result from extended exposure to radiation is reduced by the gate layer.

Diode design to reduce the effects of radiation damage

A detector assembly including a radiation conversion layer directly coupled to a pixel array is provided. The radiation conversion layer is adapted to receive radiation passing through an object. The pixel array is adapted for receiving one of a plurality of signals representative of the radiation passing through the object or the corresponding optical signals from an optional intermediate light production layer and further configured for generating a corresponding image of the object.

Detector assembly and method of manufacture

A photodetector for X-ray applications is disclosed incorporating a photodiode design with reduced leakage at each pixel location. The photodiode is of a reduced surface area and has a peripheral edge of reduced length. The length may be minimized by making the photodiode round. The diode is surrounded by a reflective layer that may act as a contact for the diode. Photons are reflected by the reflective layer back towards the reduced area diode to maintain good sensitivity. The reflective/contact layer may form a capacitor with another contact layer by disposing a dielectric layer therebetween, thereby increasing the effective capacitance of the photodiode.

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Niskayuna, NY, United States of America

Scott Stephen Zelakiewicz