Patents by Inventor Klaus Juergen Engel

Klaus Juergen Engel 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: 10492736
    Abstract: A medical imaging system for providing X-ray image data of an object including at least one X-ray detector, an X-ray source arrangement, and a patient configured to receive an object for imaging a region of interest of the object. The at least one X-ray detector is movably mounted above the patient table; and the at least one X-ray detector and the X-ray source arrangement are movable independently. The X-ray source arrangement includes a physical trajectory support structure and is configured to provide X-ray radiation to the region of interest from a number of positions forming a concave open trajectory, wherein a portion of the trajectory and/or the physical trajectory support structure is located below the patient table; and wherein two end regions of the trajectory are extending on the two lateral sides of above the table.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: December 3, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Chrysi Papalazarou, Gereon Vogtmeier, Klaus Juergen Engel, Herman Stegehuis
  • Patent number: 10470722
    Abstract: An X-ray imaging system for generating X-ray projections of an object, the X-ray imaging system including an X-ray device having a single X-ray source (110) for forming a plurality of X-ray beams (104), a filter (120) positioned within the plurality of X-ray beams, an object space where the object to be imaged is accommodated, and an X-ray detector (150) including an array of a plurality of pixels (151 . . . 155). The X-ray device, the filter, and the plurality of pixels are configured such that at least one pixel is exposed to the plurality of X-ray beams. X-ray radiation received by a particular pixel undergoes a same spectral filtration by the filter. Pixels receiving the X-ray radiation undergoing the same spectral filtration are summarized to a pixel subset.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: November 12, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Klaus Jürgen Engel
  • Publication number: 20190209107
    Abstract: An interventional X-ray system is proposed, the system including a multi X-ray source unit positioned below a patient table. This ‘multiblock’ may comprise several x-ray sources with focal spot positions distributed along the x-y (table) plane. The x-ray sources are operable in a switching scheme in which certain x-ray sources may be activated in parallel and also sequential switching between such groups is intended. The switching may be carried out so that several images with different projection angles can be acquired in parallel. In other words, an optimal multi-beam X-ray exposure is suggested, wherein fast switching in one dimension and simultaneous exposure in the 2nd dimension is applied.
    Type: Application
    Filed: May 12, 2017
    Publication date: July 11, 2019
    Inventors: Gereon VOGTMEIER, Klaus Juergen ENGEL, Michael GRASS, Bernd MENSER, Heidrun STEINHAUSER, Alberto FAZZI, Herman STEGEHUIS, Dirk SCHAEFER
  • Publication number: 20180328865
    Abstract: The present invention relates to an apparatus for determining an effective energy spectrum of an X-ray tube. It is described to provide (210) a temporally varying acceleration voltage of an X-ray tube for a time period. A temporally varying X-ray tube current is also provided (220) for the time period. At least one product of the temporally varying X-ray tube current and a time interval is determined (230). An effective energy spectrum of the X-ray tube processing the X-ray tube is determined (250) as a function of the at least one product of the temporally varying X-ray tube current and the time interval and as a function of the voltage of the X-ray tube.
    Type: Application
    Filed: December 2, 2016
    Publication date: November 15, 2018
    Inventors: Klaus Jürgen ENGEL, Gereon VOGTMEIER, Rolf Karl Otto BEHLING
  • Patent number: 10078009
    Abstract: The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and/or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and/or two shaped pulses of different shapes which can be compared to each other.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: September 18, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Heiner Daerr, Klaus Juergen Engel, Christoph Herrmann, Roger Steadman Booker, Ewald Roessl
  • Patent number: 10054692
    Abstract: The present invention relates to a detector (22?) for detecting ionizing radiation, comprising: a directly converting semi-conductor layer (36) for producing charge carriers in response to incident ionizing radiation; and a plurality of electrodes (34) corresponding to pixels for registering the charge carriers and generate a signal corresponding to registered charge carriers; wherein an electrode of the plurality of electrodes (34) is structured to two-dimensionally intertwine with at least two adjacent electrodes to register the charge carriers by said electrode and by at least one adjacent electrode. The present invention further relates to a detection method and to an imaging apparatus.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: August 21, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Ewald Roessl, Christoph Herrmann, Roger Steadman Booker, Klaus Jürgen Engel
  • Publication number: 20170357013
    Abstract: The present invention relates to a detector (22?) for detecting ionizing radiation, comprising: a directly converting semi-conductor layer (36) for producing charge carriers in response to incident ionizing radiation; and a plurality of electrodes (34) corresponding to pixels for registering the charge carriers and generate a signal corresponding to registered charge carriers; wherein an electrode of the plurality of electrodes (34) is structured to two-dimensionally intertwine with at least two adjacent electrodes to register the charge carriers by said electrode and by at least one adjacent electrode. The present invention further relates to a detection method and to an imaging apparatus.
    Type: Application
    Filed: December 11, 2015
    Publication date: December 14, 2017
    Inventors: Ewald ROESSL, Christoph HERRMANN, Roger STEADMAN BOOKER, Klaus Jürgen ENGEL
  • Publication number: 20170273642
    Abstract: An X-ray imaging system for generating X-ray projections of an object, the X-ray imaging system including an X-ray device having a single X-ray source (110) for forming a plurality of X-ray beams (104), a filter (120) positioned within the plurality of X-ray beams, an object space where the object to be imaged is accommodated, and an X-ray detector (150) including an array of a plurality of pixels (151 . . . 155). The X-ray device, the filter, and the plurality of pixels are configured such that at least one pixel is exposed to the plurality of X-ray beams. X-ray radiation received by a particular pixel undergoes a same spectral filtration by the filter. Pixels receiving the X-ray radiation undergoing the same spectral filtration are summarized to a pixel subset.
    Type: Application
    Filed: September 1, 2015
    Publication date: September 28, 2017
    Inventor: Klaus Jürgen ENGEL
  • Patent number: 9750465
    Abstract: The invention relates to the field of X-ray differential phase contrast imaging. For scanning large objects and for an improved contrast to noise ratio, an X-ray device (10) for imaging an object (18) is provided. The X-ray device (10) comprises an X-ray emitter arrangement (12) and an X-ray detector arrangement (14), wherein the X-ray emitter arrangement (14) is adapted to emit an X-ray beam (16) through the object (18) onto the X-ray detector arrangement (14). The X-ray beam (16) is at least partial spatial coherent and fan-shaped. The X-ray detector arrangement (14) comprises a phase grating (50) and an absorber grating (52). The X-ray detector arrangement (14) comprises an area detector (54) for detecting X-rays, wherein the X-ray device is adapted to generate image data from the detected X-rays and to extract phase information from the X-ray image data, the phase information relating to a phase shift of X-rays caused by the object (18).
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: September 5, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Klaus Juergen Engel, Dieter Geller, Gereon Vogtmeier, Thomas Koehler
  • Patent number: 9753156
    Abstract: The invention relates to a detector (6) for detecting radiation, especially x-ray radiation used in a computed tomography system. The detector comprises a direct conversion material (9) for converting radiation into electrons and holes, which are used for generating an electrical detection signal. The direct conversion material is illuminated with illumination light being broadband visible and/or broadband infrared light for reducing, in particular, eliminating, a polarization of the direct conversion material, which may occur when being traversed by the radiation to be detected and which may reduce the detection performance. By reducing the polarization of the direct conversion material the detection performance can be improved.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: September 5, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Frank Verbakel, Klaus Juergen Engel, Antonius Johannes Maria Nellissen, Herfried Karl Wieczorek, Eric Cornelius Egbertus Van Grunsven, Ira Micah Blevis, Roger Steadman Booker
  • Patent number: 9608157
    Abstract: A radiation detector (10) includes a semiconductor element (1) for generating positive holes and electrons, a cathode (2) formed on a first surface of the semiconductor element (1) and a plurality of segmented anodes (3) formed on a second surface of the semiconductor element (1), the second surface being in opposed relation to the first surface. Additionally, a plurality of segmented steering electrodes (5a) are positioned adjacent the plurality of segmented anodes (3). Moreover, a plurality of doping atoms are located above at least a portion of the plurality of segmented anodes (3) for reducing the voltage difference between the plurality of segmented anodes (3) and the plurality of segmented steering electrodes (5a).
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: March 28, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Klaus Juergen Engel, Christoph Herrmann
  • Patent number: 9599577
    Abstract: The invention relates to a method and an imaging system (100) for generating X-ray images. The system (100) comprises at least one X-ray source, preferably an array of X-ray sources (101a-101d), and an X-ray detector (103) with an array of sensitive pixels (103a-103e). A collimator (102) is arranged between the X-ray source and the detector such that two openings (P) of the collimator (102) allow the passage of X-rays towards two neighboring pixels (103a-103e) while the region between said pixels is substantially shielded. This shielding of the usually insensitive regions between pixels reduces unnecessary X-ray exposure. A sufficiently large X-ray intensity can be achieved by using a plurality of small X-ray sources (101a-101d).
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: March 21, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Klaus Juergen Engel, Gereon Vogtmeier
  • Patent number: 9535174
    Abstract: The present invention discloses a pixilated direct conversion photon counting detector with a direct conversion material layer and a pixilated electrode. Individual electrode pixels are segmented into three segments (510, 520, 530), wherein one of the segments (520) is operated at a more electrically repellant value than that of the other two (510, 530). Said other two segments are connected to electric circuitry (610, 611, 620, 630) that is arranged to generate signals which are indicative of a count of electrons or holes that approach each of the respective electrode pixel segments and to subtract the generated signals from each other.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: January 3, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Klaus Juergen Engel, Roger Steadman Booker, Christoph Herrmann
  • Publication number: 20160249869
    Abstract: The present invention relates to providing X-ray image data of an object. In order to provide a medical X-ray imaging system with improved practicability, a medical X-ray imaging system (100) is provided, comprising at least one X-ray detector (110), an X-ray source arrangement (120), and a patient table (130). The patient table is configured to receive an object for imaging a region of interest (140) of the object. The at least one X-ray detector is movably mounted above the patient table; and the at least one X-ray detector and the X-ray source arrangement are movable independently. The X-ray source arrangement is configured to provide X-ray radiation to the region of interest from a number of positions (150) forming a concave open trajectory (160), wherein a middle portion (170) of the trajectory is located below the patient table; and wherein two end regions (180) of the trajectory are extending on the two lateral sides of the table and above the table.
    Type: Application
    Filed: October 30, 2014
    Publication date: September 1, 2016
    Inventors: CHRYSI PAPALAZAROU, GEREON VOGTMEIER, KLAUS JUERGEN ENGEL, HERMAN STEGEHUIS
  • Patent number: 9348067
    Abstract: The present invention relates to phase-contrast imaging which visualizes the phase information of coherent radiation passing a scanned object. Focused gratings are used which reduce the creation of trapezoid profile in a projection with a particular angle to the optical axis. A laser supported method is used in combination with a dedicating etching process for creating such focused grating structures.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: May 24, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Gereon Vogtmeier, Klaus Juergen Engel, Thomas Koehler, Ewald Roessl
  • Publication number: 20160076935
    Abstract: The invention relates to a method and a pulse processing circuit (100) for the processing of current pulses (CP) generated by incident photons (X) in a piece of converter material, for instance in a pixel (11) of a radiation detector. Deviations of the pulse shape from a reference are detected and used to identify pulse corruption due to pile-up effects at high count rates and/or charge sharing between neighboring pixels. The deviation detection may for instance be achieved by generating, with a pulse shaper (110), bipolar shaped pulses from the current pulse (CP) and/or two shaped pulses of different shapes which can be compared to each other.
    Type: Application
    Filed: April 17, 2014
    Publication date: March 17, 2016
    Inventors: Heiner DAERR, Klaus Juergen ENGEL, Christoph HERRMANN, Roger STEADMAN BOOKER, Ewald ROESSL
  • Publication number: 20150362604
    Abstract: The invention relates to a detector (6) for detecting radiation, especially x-ray radiation used in a computed tomography system. The detector comprises a direct conversion material (9) for converting radiation into electrons and holes, which are used for generating an electrical detection signal. The direct conversion material is illuminated with illumination light being broadband visible and/or broadband infrared light for reducing, in particular, eliminating, a polarization of the direct conversion material, which may occur when being traversed by the radiation to be detected and which may reduce the detection performance. By reducing the polarization of the direct conversion material the detection performance can be improved.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 17, 2015
    Inventors: Frank VERBAKEL, Klaus Juergen ENGEL, Antonius Johannes Maria NELLISSEN, Herfried Karl WIECZOREK, Eric Cornelis Egbertus VAN GRUNSVEN, Ira Micah BLEVIS, Roger STEADMAN BOOKER
  • Publication number: 20150234058
    Abstract: The present invention discloses a pixilated direct conversion photon counting detector with a direct conversion material layer and a pixilated electrode. Individual electrode pixels are segmented into three segments (510, 520, 530), wherein one of the segments (520) is operated at a more electrically repellant value than that of the other two (510, 530). Said other two segments are connected to electric circuitry (610, 611, 620, 630) that is arranged to generate signals which are indicative of a count of electrons or holes that approach each of the respective electrode pixel segments and to subtract the generated signals from each other.
    Type: Application
    Filed: September 18, 2013
    Publication date: August 20, 2015
    Inventors: Klaus Juergen Engel, Roger Steadman Booker, Christoph Herrmann
  • Publication number: 20150228838
    Abstract: A radiation detector (10) includes a semiconductor element (1) for generating positive holes and electrons, a cathode (2) formed on a first surface of the semiconductor element (1) and a plurality of segmented anodes (3) formed on a second surface of the semiconductor element (1), the second surface being in opposed relation to the first surface. Additionally, a plurality of segmented steering electrodes (5a) are positioned adjacent the plurality of segmented anodes (3). Moreover, a plurality of doping atoms are located above at least a portion of the plurality of segmented anodes (3) for reducing the voltage difference between the plurality of segmented anodes (3) and the plurality of segmented steering electrodes (5a).
    Type: Application
    Filed: August 12, 2013
    Publication date: August 13, 2015
    Inventors: Klaus Juergen Engel, Christoph Herrmann
  • Patent number: 9084528
    Abstract: X-ray devices for Phase Contrast Imaging (PCI) are often built up with the help of gratings. For large field-of-views (FOV), production cost and complexity of these gratings could increase significantly as they need to have a focused geometry. Instead of a pure PCI with a large FOV, this invention suggests to combine a traditional absorption X-ray-imaging system with large-FOV with an insertable low-cost PCI system with small-FOV, The invention supports the user to direct the PCI system with reduced FOV to a region that he regards as most interesting for performing a PCI scan thus eliminating X-ray dose exposure for scanning regions not interesting for a radiologist. The PCI scan may be generated on the basis of local tomography.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: July 21, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Dieter Geller, Klaus Juergen Engel, Gereon Vogtmeier, Thomas Koehler, Ewald Roessl