Patents by Inventor Walter Ruetten

Walter Ruetten has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220365230
    Abstract: The present invention relates to an X-ray detector (10) comprising two or more scintillator layers, comprising: a first scintillator layer (20); a second scintillator layer (30); a first photodiode array (40); a second photodiode array (50); and at least one light emitting layer (60). The first scintillator layer is configured to absorb X-rays from an X-ray pulse and emit light. The first photodiode array is positioned adjacent to the first scintillators layer. The first photodiode array is configured to detect at least some of the light emitted by the first scintillator layer. The second scintillator layer is configured to absorb X-rays from the X-ray pulse and emit light. The second photodiode array is positioned adjacent to the second scintillator layer. The second photodiode array is configured to detect at least some of the light emitted by the second scintillator layer.
    Type: Application
    Filed: December 2, 2020
    Publication date: November 17, 2022
    Inventors: ROGER STEADMAN BOOKER, WALTER RUETTEN, MATTHIAS SIMON
  • Patent number: 11428830
    Abstract: An X-ray detector is positioned relative to an X-ray source such that at least a part of a region between the X-ray source and the X-ray detector is an examination region for accommodating an object. The X-ray source and X-ray detector are controlled by a processing unit in order to operate in a first imaging operation mode, a second imaging operation mode, and/or a third imaging operation mode. The detector comprises a first scintillator, a second scintillator, a first sensor array, and a second sensor array. The first scintillator is disposed over the second scintillator such that X-rays emitted from the X-ray source first encounter the first scintillator and then encounter the second scintillator.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: August 30, 2022
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Peter George Van De Haar, Walter Ruetten, Heidrun Steinhauser, Herman Stegehuis, Onno Jan Wimmers
  • Publication number: 20210396891
    Abstract: The present invention relates to an imaging detector. In order to provide a hybrid X-ray and optical detector with enhanced optical imaging capabilities and a simple design, an imaging detector is provided for capturing optical imaging data and X-ray imaging data. The imaging detector comprises a substrate, a photosensitive sensor, an X-ray scintillator, and an array of optical component arrangements. The photosensitive sensor comprises sensor pixels distributed across the imaging detector. The X-ray scintillator is configured to convert energy of incident X-ray radiation into optical photons. Each optical component arrangement comprises at least one optical component configured for directing incident optical radiation towards the photosensitive sensor. The sensor pixels comprise optical pixels, each coupled with a respective optical component arrangement to receive the incident optical radiation, thereby generating the optical imaging data.
    Type: Application
    Filed: November 21, 2019
    Publication date: December 23, 2021
    Inventors: JOHANNES WILHELMUS MARIA JACOBS, ROBERT DERK JAN HENDRIK HOFSINK, BERNARDUS HENDRIKS, RONALDUS FREDERIK JOHANNES HOLTHUIZEN, WALTER RUETTEN
  • Patent number: 11181488
    Abstract: A computed tomography (CT) detector array (120) includes a monolithic scintillator (124). The monolithic scintillator includes at least a first scintillator region (202), a second scintillator region (206), and an optically reflective barrier (210) therebetween. The detector array is configured to detect X-ray radiation traversing an examination region and impinging the monolithic scintillator and generate first projection data indicative of an energy of x-ray radiation absorbed by the first scintillator region and second projection data indicative of an energy of x-ray radiation traversing the first scintillator and absorbed by the second scintillator region.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: November 23, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Roger Steadman Booker, Walter Ruetten
  • Publication number: 20210072167
    Abstract: A computed tomography (CT) detector array (120) includes a monolithic scintillator (124). The monolithic scintillator includes at least a first scintillator region (202), a second scintillator region (206), and an optically reflective barrier (210) therebetween. The detector array is configured to detect X-ray radiation traversing an examination region and impinging the monolithic scintillator and generate first projection data indicative of an energy of x-ray radiation absorbed by the first scintillator region and second projection data indicative of an energy of x-ray radiation traversing the first scintillator and absorbed by the second scintillator region.
    Type: Application
    Filed: August 20, 2018
    Publication date: March 11, 2021
    Inventors: ROGER STEADMAN BOOKER, WALTER RUETTEN
  • Publication number: 20210072412
    Abstract: The present invention relates to a system for X-ray imaging It is explained to position (210) an X-ray detector (10) relative to an X-ray source such that at least a part of a region between the X-ray source and the X-ray detector is an examination region for accommodating an object. The X-ray source and X-ray detector are controlled (220) by a processing unit in order to: operate (230) in a first imaging operation mode; or operate (240) in a second imaging operation mode; or operate (250) in the first imaging mode and in the second imaging mode; or operate (260) in a third imaging operation mode. The detector comprises a first scintillator (20), a second scintillator (30), a first sensor array (40), and a second sensor array (50). The first sensor array is associated with the first scintillator. The first sensor array comprises an array of sensor elements configured to detect optical photons generated in the first scintillator. The second sensor array is associated with the second scintillator.
    Type: Application
    Filed: December 31, 2018
    Publication date: March 11, 2021
    Inventors: PETER GEORGE VAN DE HAAR, WALTER RUETTEN, HEIDRUN STEINHAUSER, HERMAN STEGEHUIS, ONNO JAN WIMMERS
  • Patent number: 10679762
    Abstract: The invention relates to an analyzing grid for phase contrast imaging and/or dark-field imaging, a detector arrangement for phase contrast imaging and/or dark-field imaging comprising such analyzing grid, an X-ray imaging system comprising such detector arrangement, a method for manufacturing such analyzing grid, a computer program element for controlling such analyzing grid or detector arrangement for performing such method and a computer readable medium having stored such computer program element. The analyzing grid comprises a number of X-ray converting gratings. The X-ray converting gratings are configured to convert incident X-ray radiation into light or charge. The number of X-ray converting gratings comprises at least a first X-ray converting grating and a second X-ray converting grating.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: June 9, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Thomas Koehler, Roger Steadman Booker, Matthias Simon, Walter Ruetten, Herfried Karl Wieczorek
  • Patent number: 10539682
    Abstract: The present invention relates to medical imaging, and in particular a medical imaging detector. In order to improve and facilitate the collection of information, e.g. for medical diagnosis, a medical imaging detector is provided that comprises a first sensor arrangement (12) and a second sensor arrangement (14). The first sensor arrangement is configured to provide a first type of image data belonging to a first imaging modality. The second sensor arrangement is configured to provide a second type of image data belonging to a second imaging modality. The first imaging modality is an X-ray imaging modality, while the second imaging modality is a non-X-ray imaging modality. The first sensor arrangement comprises one or a plurality of first sensor segments (16) arranged within a first circumferential line (18) defining a first imaging area (20).
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: January 21, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Johannes Wilhelmus Maria Jacobs, Walter Ruetten, Matthias Simon
  • Patent number: 10539688
    Abstract: In a conventional phase-contrast X-ray imaging system, a source grating G0 generates an array of partially coherent line sources which illuminate an object and thereafter phase grating G1. The periodicity in the phase grating is self-imaged at certain instances further away from the X-ray source and sampled by a mechanically movable third absorptive analyzer grating G2 before the demodulated fringe intensity is detected by a conventional X-5 ray detector. This application proposes to directly demodulate the fringe intensity using a structured scintillator having a plurality of slabs in alignment with sub-pixels of an optical detector layer, in combination with electronic signal read-out approaches. Therefore, a mechanically movable third absorptive analyzer grating G2 can be omitted from a phase-contrast X-ray imaging system.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: January 21, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Roger Steadman Booker, Ewald Roessl, Walter Ruetten
  • Patent number: 10444381
    Abstract: The present invention relates to a radiation detector, in particular a direct conversion radiation detector. To provide for simple distribution of provided high voltage the radiation detector comprises a plurality of detector modules (10, 20) arranged adjacent to each other. Each detector module comprises a sensor layer (14, 24) for converting incident radiation (100) into electrical charges, a first electrode (15, 25) deposited on a first surface of the sensor layer facing the incident radiation (100), a second electrode (16, 26) deposited on a second surface of the sensor layer opposite the first surface, a readout electronics (12, 22) in electrical contact with the second electrode, and a carrier (13, 23) for carrying the sensor layer and the readout electronics.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: October 15, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Roger Steadman Booker, Carolina Ribbing, Walter Ruetten, Gereon Vogtmeier
  • Publication number: 20190304616
    Abstract: The invention relates to an analyzing grid for phase contrast imaging and/or dark-field imaging, a detector arrangement for phase contrast imaging and/or dark-field imaging comprising such analyzing grid, an X-ray imaging system comprising such detector arrangement, a method for manufacturing such analyzing grid, a computer program element for controlling such analyzing grid or detector arrangement for performing such method and a computer readable medium having stored such computer program element. The analyzing grid comprises a number of X-ray converting gratings. The X-ray converting gratings are configured to convert incident X-ray radiation into light or charge. The number of X-ray converting gratings comprises at least a first X-ray converting grating and a second X-ray converting grating.
    Type: Application
    Filed: June 8, 2017
    Publication date: October 3, 2019
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: THOMAS KOEHLER, ROGER STEADMAN BOOKER, MATTHIAS SIMON, WALTER RUETTEN, HERFRIED KARL WIECZOREK
  • Publication number: 20190219713
    Abstract: In a conventional phase-contrast X-ray imaging system, a source grating G0 generates an array of partially coherent line sources which illuminate an object and thereafter phase grating G1. The periodicity in the phase grating is self-imaged at certain instances further away from the X-ray source and sampled by a mechanically movable third absorptive analyzer grating G2 before the demodulated fringe intensity is detected by a conventional X-5 ray detector. This application proposes to directly demodulate the fringe intensity using a structured scintillator having a plurality of slabs in alignment with sub-pixels of an optical detector layer, in combination with electronic signal read-out approaches. Therefore, a mechanically movable third absorptive analyzer grating G2 can be omitted from a phase-contrast X-ray imaging system.
    Type: Application
    Filed: August 3, 2018
    Publication date: July 18, 2019
    Inventors: ROGER STEADMAN BOOKER, EWALD ROESSL, WALTER RUETTEN
  • Publication number: 20180360400
    Abstract: An anti-scatter device (ASG) filled with a filler material. The filler material (202) has an acoustic impedance that corresponds to that of human or animal tissue. Furthermore a hybrid X-ray/ultrasound imager (IM) including such an anti-scatter GA device (ASG).
    Type: Application
    Filed: December 15, 2016
    Publication date: December 20, 2018
    Inventors: Matthias Simon, Walter RUETTEN, Torsten SOLF
  • Publication number: 20180356541
    Abstract: The present invention relates to a radiation detector, in particular a direct conversion radiation detector. To provide for simple distribution of provided high voltage the radiation detector comprises a plurality of detector modules (10, 20) arranged adjacent to each other. Each detector module comprises a sensor layer (14, 24) for converting incident radiation (100) into electrical charges, a first electrode (15, 25) deposited on a first surface of the sensor layer facing the incident radiation (100), a second electrode (16, 26) deposited on a second surface of the sensor layer opposite the first surface, a readout electronics (12, 22) in electrical contact with the second electrode, and a carrier (13, 23) for carrying the sensor layer and the readout electronics.
    Type: Application
    Filed: December 2, 2016
    Publication date: December 13, 2018
    Inventors: Roger STEADMAN BOOKER, Carolina RIBBING, Walter RUETTEN, Gereon VOGTMEIER
  • Publication number: 20180024253
    Abstract: The present invention relates to medical imaging, and in particular a medical imaging detector. In order to improve and facilitate the collection of information, e.g. for medical diagnosis, a medical imaging detector is provided that comprises a first sensor arrangement (12) and a second sensor arrangement (14). The first sensor arrangement is configured to provide a first type of image data belonging to a first imaging modality. The second sensor arrangement is configured to provide a second type of image data belonging to a second imaging modality. The first imaging modality is an X-ray imaging modality, while the second imaging modality is a non-X-ray imaging modality. The first sensor arrangement comprises one or a plurality of first sensor segments (16) arranged within a first circumferential line (18) defining a first imaging area (20).
    Type: Application
    Filed: February 3, 2016
    Publication date: January 25, 2018
    Inventors: JOHANNES WILHELMUS MARIA JACOBS, WALTER RUETTEN, MATTHIAS SIMON
  • Patent number: 9201150
    Abstract: According to an embodiment of the invention, signals coming from a number of pixels or sub-pixels are compared and those signals from pixels or sub-pixels, which are substantially brighter than the other pixels in the comparison, are excluded from contributing to the output signal, to suppress direct detection events in X-ray detectors. For this an X-ray detector apparatus (101) can comprise: —an array (102) of pixel arrangements (303), —each pixel arrangement (303) comprising at least one radiation collection device (311) for converting incident radiation into a collection device signal, —switching arrangements (313, 324, 314, 142; 313, 315, 314, 352, 142; 313, 315, 314; 361) for providing to respectively one output element (141) a signal derived from the collection device signals of a plurality of radiation collection devices (311) of at least one pixel arrangement (303).
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: December 1, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Walter Ruetten, Tiemen Poorter, Rainer Kiewitt
  • Patent number: 9121954
    Abstract: Device and method for synchronously switching activating a first and second charge accumulation section (31, 32) for a duration of a first and second predetermined sub-frame and a first and second X-ray source until lapse of a predetermined time frame for each of the first and second charge accumulation section (31, 32) for the accumulation of a plurality of temporally distributed partial charges according to an origin of a respective one of the plurality of spatially distributed X-ray sources so as to establish a specific relation between the focal spot position and a rule for accumulating the respective partial measurements, e.g. temporally distributed partial charges, belonging to the same focal spot positions, and to keep the focal spot temperature low by only activating the focal spot for a limited time according to a sub-frame.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: September 1, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Rainer Pietig, Walter Ruetten, Christoph Herrmann
  • Patent number: 9049395
    Abstract: A processing circuit for an X-ray sensor for collecting at least a first pixel information of a first pixel and a second pixel information of a second pixel is provided. The processing circuit comprises an amplifier (112), a feedback loop (113) and a first collecting device (111). It is provided a compensation for a non-linearity in the pixels or in the pixel circuits (100, 200) by applying an inverse non-linearity (125) in the periphery of the X-ray sensor. A processing circuit (110) may provide a copy of a pixel voltage and/or of a pixel charge. In the case of pixel charge a non-linear characteristic of a pixel capacitance may be compensated.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: June 2, 2015
    Assignee: Trixell
    Inventors: Roelf Van Der Wal, Lex Alving, Walter Ruetten
  • Patent number: 8772727
    Abstract: The application describes an X-ray detector for use in a medical equipment, wherein the detector comprises an unit for transforming X-ray radiation into electrical charge, a first capacitor for being charged by an electrical charge, wherein the first capacitor is electrically connected to the unit for transforming, a second capacitor for being charged by an electrical charge, and a first gain switching gate, wherein the second capacitor is electrically connected with the unit for transforming if the first gain switching gate is in on-state, wherein the detector is adapted to switch on the first gain switching gate for short periods. Further the application describes an X-ray system comprising a detector according to the invention, wherein the system is adapted for gain selection, wherein the detector is adapted to switch on the first gain switching gate for short periods.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: July 8, 2014
    Assignee: Trixell
    Inventors: Walter Ruetten, Rainer Kiewitt, Olaf Wischhusen
  • Patent number: 8653471
    Abstract: A detector array (110) of an imaging system (100) includes a radiation sensitive detector (114, 116) that detects radiation and generates a signal indicative thereof. A current-to-frequency (I/F) converter (202) converts the signal to a pulse train having a frequency indicative of the signal for an integration period. Circuitry (120) generates a first moment and at least one higher order moment based on the pulse train.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: February 18, 2014
    Assignee: Koninklijke Philips N. V.
    Inventors: Roland Proksa, Christoph Herrmann, Walter Ruetten