Patents by Inventor Stefan Popescu

Stefan Popescu 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: 8689377
    Abstract: A patient bed for an imaging medical apparatus has a patient support plate that has at least one radar antenna to obtain physiological and/or geometric data from a patient the patient support plate. In a method for the operation of such a patient bed having at least one radar antenna in an imaging medical apparatus, the at least one radar antenna is operated to obtain data from the patient on the patient support plate.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: April 8, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thilo Hannemann, Stefan Popescu, Georg Wittmann
  • Publication number: 20140073902
    Abstract: A medical imaging device includes a sensor unit for detecting a physiological signal, and a data evaluation unit which, on the basis of the detected physiological signals, determines a trigger signal for a medical imaging examination on a patient. The sensor unit includes at least one sensor element which is designed for detection of at least one blood circulation signal.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 13, 2014
    Inventor: Stefan Popescu
  • Publication number: 20140032577
    Abstract: One exemplary embodiment involves displaying, by a device comprising a processor, indications of which events or properties of a component are exposed for analytics, wherein the component comprises a template for instances of the component for use in electronic content. The exemplary embodiment further involves determining, by the device, a mapping based on selection of events or properties of the component to map to corresponding data elements to be tracked by an analytics service. The exemplary embodiment further involves providing, by the device, electronic content comprising at least one instance of the component, the electronic content configured to send information about the data elements to the analytics service based on the mapping during use of the electronic content.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 30, 2014
    Applicant: Adobe Systems Incorporated
    Inventors: Lars Trieloff, Marius Zaharia, Stefan Popescu, Roland Schär, Stelian Crisan
  • Publication number: 20140028312
    Abstract: In a computer-readable storage medium and a magnetic resonance apparatus for processing image data of the magnetic resonance apparatus, after the reconstruction of the image corresponding to the image data, a description of the degree of image blurring that results from the acquisition of the image from a flip angle thereby is implemented. This image blurring is corrected with the use of an aliasing kernel.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 30, 2014
    Inventor: Stefan Popescu
  • Patent number: 8638095
    Abstract: A method is disclosed for correction of truncations of a magnetic resonance image of an object under examination in the reconstruction of image data from raw data. In at least one embodiment, the method includes determining a number of one-dimensional projections of imaged field of view in the Radon space from the raw data in order to obtain a projection profile; checking each projection profile for whether the projection profile exhibits a truncation; if the respective checked projection profile exhibits a truncation, expanding the projection profile for correcting the truncation in that the projection profile is extrapolated in accordance with a predetermined extrapolation model in the area in which it exhibits the truncation; and reconstructing image data based on the expanded projection profiles in which the truncation of the image of the object under examination is corrected.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: January 28, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Matthias Fenchel, Stefan Popescu
  • Publication number: 20140012126
    Abstract: In a methods for elastography in a defined region of an examined person, a radio-frequency pulse is radiated to manipulate a transverse magnetization in the defined region and at least one additional radio-frequency pulse with a spatial selectivity of the amplitude is radiated to generate shear waves in the defined region. A magnetic resonance signal from the defined region is detected and a determination of a value describing the tissue elasticity in the defined region is made based on the magnetic resonance signal.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 9, 2014
    Inventor: Stefan Popescu
  • Patent number: 8626265
    Abstract: A device is disclosed for stimulating the trigeminal nerve of a patient in order to reduce the heart rate of the patient for recording image information from the heart of the patient. In at least one embodiment, the device includes at least one device for mechanical, electrical, magnetic, thermal, optical and/or chemical stimulation of the trigeminal nerve. Furthermore, at least one embodiment relates to an apparatus including at least one such device and a unit for registering the heart rate of the patient, which unit interacts with the device. Furthermore, at least one embodiment moreover relates to a method for reducing the heart rate of a patient in order to record image information from the heart of the patient, in which method the trigeminal nerve of the patient is stimulated by at least one such device in order to lower the heart rate of the patient.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: January 7, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Eckhard Hempel, Stefan Popescu, Nicolae Rusca
  • Publication number: 20130342350
    Abstract: In a method and apparatus for communication between a control unit of a medical imaging device, the control unit being arranged within a control room, and an operator located in an examination room examination and/or a patient (17) located in the examination room and positioned on a patient support device (18), wherein the control room is arranged outside of the examination room, object data of objects positioned on the patient support device (18) and/or of the operator are acquired by an object data acquisition unit, the acquired object data are transferred from the object data acquisition unit to the control unit, information of the objects positioned on the patient support device and/or the operator is determined by the control unit using the acquired object data, and output information is generated using the determined information and the output information is presented within the examination room.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 26, 2013
    Inventor: Stefan Popescu
  • Publication number: 20130342851
    Abstract: A method for gathering information relating to at least one object positioned on a patient positioning device of a medical imaging device is provided. The method includes the following steps: gathering by optical means of 3-D image data relating to the object positioned on the patient positioning device by means of a 3-D image data recording unit, transferring the gathered 3-D image data from the 3-D image data recording unit to an evaluating unit, determining information relating to the object positioned on the patient positioning device based on the 3-D image data by means of the evaluating unit, generating output information based on the determined information relating to the object positioned on the patient positioning device, and outputting the output information relating to the object positioned on the patient positioning device.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 26, 2013
    Inventors: Holger Dresel, Matthias Drobnitzky, Jens Gühring, Edgar Müller, Stefan Popescu
  • Publication number: 20130127461
    Abstract: A receive apparatus in a strong magnetic alternating field is disposed in a magnetic resonance tomography (MRT) system. The MRT system includes at least one receive apparatus for a magnetic resonance high frequency (MR-HF) signal. The receive apparatus includes a receive coil element for receiving the MR-HF signal, an optical modulator, in which an electrical control input is coupled to the receive coil element, and an optical output for outputting an output signal of the modulator. The optical modulator forms an optical demodulation device for the MR-HF signal. The optical modulator is coupled to a laser light source via an optical input that is configured to generate a laser light. A light intensity of the laser light varies periodically with a predetermined frequency.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 23, 2013
    Inventor: Stefan Popescu
  • Patent number: 8374309
    Abstract: An arrangement and a method are disclosed for projective and/or tomographic phase-contrast imaging using X-ray radiation. In at least one embodiment, one or more phase grids is/are arranged in the beam path such that during a rotation of the at least one X-ray source, the examination object is scanned with different spatial orientations of the grid lines relative to the examination object such that the complete refraction angle, and hence the complete phase shift gradient, can be determined for each X-ray beam from the two scans with differently oriented phase grids in order to be able to show the phase shift of an examination object in terms of projections or in a tomographic image.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: February 12, 2013
    Assignees: Siemens Aktiengesellschaft, Paul Scherrer Institut
    Inventors: Tilman Donath, Martin Hoheisel, Christian David, Eckhard Hempel, Franz Pfeiffer, Stefan Popescu
  • Publication number: 20120306496
    Abstract: A high-frequency antenna unit for a magnetic resonance apparatus includes a high-frequency antenna and a shield unit. The shield unit, the high-frequency antenna, or a combination thereof is formed at least partially from a composite material. The composite material includes at least one electrically conducting material and at least one electrically non-conducting material.
    Type: Application
    Filed: May 29, 2012
    Publication date: December 6, 2012
    Inventor: Stefan Popescu
  • Publication number: 20120310053
    Abstract: In a method to control a medical apparatus of an installation having: a contact device for a patient, at least one electrical potential sensor that can be coupled to the body of said patient is integrated into the contact device. A signal evaluation device is provided with measurement signals generated with the electrical potential sensor for evaluation. The medical apparatus is connected with the signal evaluation device, and measurement signals that relate to the breathing and/or cardiac activity of the patient are acquired with the at least one electrical potential sensor coupled to the body of said patient upon contact of the patient with the contact device. Trigger signals are generated with the signal evaluation device based on the measurement signals that relate to the breathing cycle and/or the cardiac cycle of the patient. Operation of the medical apparatus is controlled based on the trigger signals.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 6, 2012
    Inventors: Andre Henning, Stefan Popescu
  • Publication number: 20120280687
    Abstract: A magnetic resonance device includes a measuring chamber, a high-frequency shield at least partially enclosing the measuring chamber and an antenna arrangement that includes a plurality of antenna elements disposed around the measuring chamber. The antenna elements have at least one component that is active in the manner of an antenna and extends, as viewed from the high-frequency shield, towards an interior of the measuring chamber.
    Type: Application
    Filed: October 28, 2011
    Publication date: November 8, 2012
    Inventor: Stefan Popescu
  • Publication number: 20120277529
    Abstract: An endoscopy capsule for examination and/or treatment in a hollow organ of a body has at least one magnetic element that interacts with an external magnetic field for externally controlled movement and/or rotation of the endoscopy capsule, and the magnetic field of the magnetic element can be varied by external control.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 1, 2012
    Inventor: Stefan Popescu
  • Publication number: 20120253174
    Abstract: An image recording device is disclosed for the simultaneous recording of magnetic resonance image data and nuclear medical image data, in particular PET image data. In at least one embodiment, the image recording device includes a nuclear medical detector arrangement integrated into a magnetic resonance device, wherein a fluorescence detector arrangement including an optical system and designed for fluorescence imaging is also integrated into the magnetic resonance device.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 4, 2012
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Stefan Popescu
  • Patent number: 8233967
    Abstract: A method is disclosed for marking and visualizing an implant by use of an x-ray phase-contrast tomography examination. Further, an implant is also disclosed. In at least one embodiment, implants are used with specific characteristics which are as unambiguous as possible with regard to the phase shift generated by the implants in a phase-contrast tomography examination. In at least one embodiment, these specific characteristics can include the typical self-generated specific phase shift, typical differences in the specific phase-shift values, or typical spatial structures of materials with well-defined phase-shift values.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: July 31, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Eckhard Hempel, Martin Hoheisel, Stefan Popescu, Rainer Raupach
  • Patent number: 8165270
    Abstract: In a method for the production of x-ray-optical gratings composed of a first material forming of periodically arranged grating webs and grating openings, a second material is applied by electroplating to fill the grid openings. The electroplating is continued until a cohesive layer of the second material with uniform height is created over the grating webs with this layer having a large absorption coefficient, the absorption properties of the grating structure of the grating are homogenized, so an improvement of the measurement signals that are generated with this grating is improved. Moreover, the mechanical stability of gratings produced in such a manner is improved.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: April 24, 2012
    Assignees: Paul Scherrer Institut, Siemens Aktiengesellschaft
    Inventors: Christian David, Tilman Donath, Eckhard Hempel, Martin Hoheisel, Barbara Matthis, Franz Pfeiffer, Stefan Popescu
  • Publication number: 20120068704
    Abstract: In a method and a magnetic resonance (MR) system and method to generate MR image data of a predetermined volume segment within an examination subject, multiple slices of the volume segment are simultaneously excited by at least one RF excitation pulse, and during the excitation a slice selection gradient is switched. The measurement signals from the multiple slices are acquired with multiple RF reception antennas, at least some of which are spaced along the propagation direction of the slice selection gradient. During the acquisition of the measurement signals the slice selection gradient is switched in order to achieve a spectral separation of the measurement signals of different slices. The MR image data are generated from the measurement signals.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 22, 2012
    Inventor: Stefan Popescu
  • Patent number: 8130897
    Abstract: An x-ray computed tomography apparatus has one anode ring in a vacuum housing surrounding an examination volume, wherein a focus of an x-ray source revolves on the anode ring to expose the examination volume with an x-ray beam from different directions, and a detector system arranged on a rotating frame that can rotate around a system axis. The detector system serves to detect the x-ray radiation exiting from the examination volume, wherein the detector system and the focus can rotate around the system axis synchronously and in the same rotation direction with a rotation angle offset by 180°. The apparatus also includes a computer to process the measurement values acquired by the detector system. The anode ring can be driven such that it rotates around the system axis, and the rotation direction of the anode ring and the rotation direction of the focus around the system axis are opposite while a rotation of the focus around the system axis ensues.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: March 6, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Stefan Popescu, Georg Wittmann