Patents by Inventor Martin Petersilka

Martin Petersilka 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).

  • Patent number: 11883216
    Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: January 30, 2024
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Edgar Goederer, Martin Hupfer, Bjoern Kreisler, Martin Petersilka
  • Patent number: 11675096
    Abstract: An X-ray detector includes a converter element for converting X-rays into electric signals; and a plurality of pixel elements. In an embodiment, each pixel element includes a first signal processing stage for processing respective electric signals with at least one signal amplifier and at least one comparator for providing a digital pixel signal. The signal outputs of the first signal processing stage of at least one group of pixel elements are coupled via signal technology to a common second signal processing stage including a multiplicity of digital logic elements. The common second signal processing stage includes a configurable switching matrix for interconnecting at least one partial number of the multiplicity of digital logic elements with the respective signal outputs of the first signal processing stage, so that, following a configuration of the switching matrix, a processing chain can be provided for the digital processing of the digital pixel signals.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: June 13, 2023
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Edgar Goederer, Martin Hupfer, Bjoern Kreisler, Martin Petersilka
  • Patent number: 11666301
    Abstract: A method for correction of an input dataset is disclosed. In an embodiment, the method includes acquisition of an input dataset comprising at least one data error; determination of a correction function; creation of a corrected output dataset by application of the correction function to the input dataset; and outputting of the corrected output dataset. The correction function is embodied to bring about a reduction of at least two data errors that mutually influence one another in the input dataset.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: June 6, 2023
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Karl Stierstorfer, Martin Petersilka, Martin Hupfer, Achim Hillenbrand, Matthias Baer-Beck, Rainer Raupach
  • Publication number: 20230136957
    Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 4, 2023
    Applicant: Siemens Healthcare GmbH
    Inventors: Edgar GÖEDERER, Martin HUPFER, Bjöern KREISLER, Martin PETERSILKA
  • Patent number: 11540791
    Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: January 3, 2023
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Edgar Goederer, Martin Hupfer, Bjoern Kreisler, Martin Petersilka
  • Patent number: 11172905
    Abstract: A method, in an embodiment, is for setting an X-ray intensity using a structured anode or a field emitter cathode or a finger-shaped cathode head. Other embodiments include an associated X-ray device, an associated single X-ray tube CT scanner, an associated dual X-ray tube CT scanner, and an associated computer program product.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: November 16, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Dieter Matuszok, Anja Fritzler, Martin Petersilka
  • Patent number: 11080853
    Abstract: An embodiment of the invention relates to a method for calculating an image matrix size N for reconstructing image data of an examination subject from projection data. The method includes acquiring projection data obtained during a relative rotational movement between a radiation source of a computed tomography system and the examination subject; calculating the image matrix size N as a function of an extent of an axial field of view of the computed tomography system and a sharpness value in the image data to be reconstructed; and making the calculated image matrix size available to a reconstruction unit to reconstruct the image data from the projection data acquired.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: August 3, 2021
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Ute Feuerlein, Martin Petersilka, Rainer Raupach, Johan Sunnegaardh
  • Publication number: 20210186439
    Abstract: A method is for generating an X-ray image dataset via an X-ray detector having a converter element and a multiplicity of pixel elements. In an embodiment, the method includes first counting of at least one quantity of count signals dependent upon the incident X-ray radiation in each pixel element of the multiplicity of pixel elements; second counting of at least one quantity of coincidence count signals in each pixel element of the subset of pixel elements with at least one further pixel element of the multiplicity of pixel elements; and generating an X-ray image dataset based upon the at least one quantity of count signals counted in each pixel element of the multiplicity of pixel elements and upon the at least one quantity of coincidence count signals counted in each pixel element of the subset of pixel elements.
    Type: Application
    Filed: December 9, 2020
    Publication date: June 24, 2021
    Applicant: Siemens Healthcare GmbH
    Inventors: Edgar GOEDERER, Martin HUPFER, Bjoern KREISLER, Martin PETERSILKA
  • Publication number: 20210186440
    Abstract: A photon-counting X-ray detector is for acquiring an X-ray image data set of an object penetrated by X-ray radiation. The detector includes a converter element, designed to convert incident X-ray radiation into an electrical signal; and a matrix with a plurality of pixel elements. At least a partial number of the plurality of pixel elements receive a signal input and at least one configurable counter is coupled to the at least a partial number of the plurality of pixel elements, for signaling. Further, the at least one configurable counter is designed to count either a pixel count signal, based on a signal directly received in each respective pixel element, or a coincidence count signal, based on the signal received directly in the respective pixel element and on a coincident signal of at least one further pixel element.
    Type: Application
    Filed: December 9, 2020
    Publication date: June 24, 2021
    Applicant: Siemens Healthcare GmbH
    Inventors: Bjoern KREISLER, Edgar GOEDERER, Martin HUPFER, Martin PETERSILKA
  • Publication number: 20210190979
    Abstract: An X-ray detector includes a converter element for converting X-rays into electric signals; and a plurality of pixel elements. In an embodiment, each pixel element includes a first signal processing stage for processing respective electric signals with at least one signal amplifier and at least one comparator for providing a digital pixel signal. The signal outputs of the first signal processing stage of at least one group of pixel elements are coupled via signal technology to a common second signal processing stage including a multiplicity of digital logic elements. The common second signal processing stage includes a configurable switching matrix for interconnecting at least one partial number of the multiplicity of digital logic elements with the respective signal outputs of the first signal processing stage, so that, following a configuration of the switching matrix, a processing chain can be provided for the digital processing of the digital pixel signals.
    Type: Application
    Filed: December 9, 2020
    Publication date: June 24, 2021
    Applicant: Siemens Healthcare GmbH
    Inventors: Edgar GOEDERER, Martin HUPFER, Bjoern KREISLER, Martin PETERSILKA
  • Publication number: 20210093286
    Abstract: A method for correction of an input dataset is disclosed. In an embodiment, the method includes acquisition of an input dataset comprising at least one data error; determination of a correction function; creation of a corrected output dataset by application of the correction function to the input dataset; and outputting of the corrected output dataset. The correction function is embodied to bring about a reduction of at least two data errors that mutually influence one another in the input dataset.
    Type: Application
    Filed: September 16, 2020
    Publication date: April 1, 2021
    Applicant: Siemens Healthcare GmbH
    Inventors: Karl STIERSTORFER, Martin PETERSILKA, Martin HUPFER, Achim HILLENBRAND, Matthias BAER-BECK, Rainer RAUPACH
  • Publication number: 20200367850
    Abstract: A method, in an embodiment, is for setting an X-ray intensity using a structured anode or a field emitter cathode or a finger-shaped cathode head. Other embodiments include an associated X-ray device, an associated single X-ray tube CT scanner, an associated dual X-ray tube CT scanner, and an associated computer program product.
    Type: Application
    Filed: May 12, 2020
    Publication date: November 26, 2020
    Applicant: Siemens Healthcare GmbH
    Inventors: Dieter MATUSZOK, Anja FRITZLER, Martin PETERSILKA
  • Publication number: 20200258221
    Abstract: An embodiment of the invention relates to a method for calculating an image matrix size N for reconstructing image data of an examination subject from projection data. The method includes acquiring projection data obtained during a relative rotational movement between a radiation source of a computed tomography system and the examination subject; calculating the image matrix size N as a function of an extent of an axial field of view of the computed tomography system and a sharpness value in the image data to be reconstructed; and making the calculated image matrix size available to a reconstruction unit to reconstruct the image data from the projection data acquired.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 13, 2020
    Applicant: Siemens Healthcare GmbH
    Inventors: Ute FEUERLEIN, Martin PETERSILKA, Rainer RAUPACH, Johan SUNNEGAARDH
  • Patent number: 10542944
    Abstract: A method is for scattered ray correction of projection measurement data recorded by a computer tomography system. In an embodiment, the method includes recording, localizing, identifying and correcting. In the recording, projection measurement data is recorded from a plurality of projection angles and the projection measurement data is captured in a sinogram. In the localizing, features in the projection measurement data of the sinogram are localized in a defined angle range about a projection angle. In the identifying, a scatter distribution for the projection angle is identified from the localized features by way of a trained identification algorithm. In the correcting, the projection measurement data of the projection angle is corrected on the basis of the scatter distribution.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: January 28, 2020
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventor: Martin Petersilka
  • Publication number: 20180078221
    Abstract: A method is for scattered ray correction of projection measurement data recorded by a computer tomography system. In an embodiment, the method includes recording, localizing, identifying and correcting. In the recording, projection measurement data is recorded from a plurality of projection angles and the projection measurement data is captured in a sinogram. In the localizing, features in the projection measurement data of the sinogram are localized in a defined angle range about a projection angle. In the identifying, a scatter distribution for the projection angle is identified from the localized features by way of a trained identification algorithm. In the correcting, the projection measurement data of the projection angle is corrected on the basis of the scatter distribution.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 22, 2018
    Applicant: Siemens Healthcare GmbH
    Inventor: Martin PETERSILKA
  • Patent number: 9192341
    Abstract: A method is disclosed for operating a computed tomography device including an x-ray source embodied to emit a fan-type beam bundle and a detector arrangement interacting therewith and including a plurality of detector elements. An embodiment of the method provides that an integration time provided to read out a detector element is dependent on the position of the detector element within the detector arrangement, wherein with a detector element which detects x-rays which penetrate the isocenter lying between the x-ray source and the detector arrangement, a longer integration time is provided, than with a detector element which detects x-rays which penetrate an examination volume which is further away from the isocenter.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: November 24, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Steffen Kappler, Martin Petersilka, Karl Stierstorfer
  • Patent number: 9082167
    Abstract: A method is disclosed for the reconstruction of image data of an examination object from measurement data. First and second image data are reconstructed from the measurement data with a first and second respective image characteristic, with an enhanced signal-to-noise ratio of the second image characteristic relative to the first image characteristic. Enhanced image data is calculated using an iterative algorithm using the first and the second image data. In the case of the iterative algorithm, a low pass is applied to a difference between the first image data and the image data of an iteration cycle, and a high pass to a difference between the second image data and the image data of the iteration cycle.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: July 14, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Herbert Bruder, Ernst Klotz, Martin Petersilka, Rainer Raupach, Harald Schöndube
  • Patent number: 9047696
    Abstract: A method is disclosed for reconstructing image data of an examination object from measurement data, wherein the measurement data were acquired in the course of a relative rotational movement between a radiation source of a computed tomography system and the examination object. First image data of the examination object are reconstructed from the measurement data. Scatter signals are calculated from the first image data using a scattered radiation model, wherein the scattered radiation model specifies an angle-dependent scatter distribution for a scatter point as a function of a line integral corresponding to an attenuation integral of a scattered beam from the scatter point to a specific detector element. The calculated scatter signals are used for correcting the measurement data, and second image data are reconstructed using the corrected measurement data.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: June 2, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Martin Petersilka, Karl Stierstorfer
  • Patent number: 8744161
    Abstract: A method and a computer system are disclosed for scattered beam correction in a CT examination of an object in a multi source CT. In at least one embodiment, the method includes generating original projection data records; reconstruction of the object with the original projection data records of at least one detector; determining the scattered radiation generated by each emitter exclusively in the direction of the original beams of the at least one other emitter relative to its opposing detector; generating corrected projection data records by removing the calculated scattered radiation from the original projection data records; reconstruction of the object with the corrected projection data records, and implementing a further iteration of the method when determining the scattered radiation or issuing the reconstruction result if at least one predetermined abort criterion applies.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: June 3, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Flohr, Martin Petersilka, Karl Stierstorfer
  • Patent number: 8718343
    Abstract: A method is disclosed for reconstructing image data of an examination object from measured data, wherein the measured data was captured previously during a relative rotary motion between a radiation source of a computed tomography system and the examination object. In at least one embodiment, the measured data is modified to achieve a particular grayscale characteristic of the image data to be reconstructed. The image data is calculated by way of an iterative algorithm using the modified measured data, wherein no arithmetic step for reducing noise is employed in the iterations.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: May 6, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Herbert Bruder, Martin Petersilka, Rainer Raupach, Karl Schwarz