Patents by Inventor Matthias Fenchel

Matthias Fenchel 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: 20200167911
    Abstract: Medical image data is received at a data processing system, which is an artificial intelligence-based system. An identification process is performed at the data processing system to identify a subset of the medical image data representing a region of interest including one or more target tendons. A determination process is performed at the data processing system to determine one or more characteristics relating to one or more abnormalities of the one or more target tendons. Abnormality data is output, the abnormality data relating to the one or more abnormalities and being based on the one or more characteristics.
    Type: Application
    Filed: October 10, 2019
    Publication date: May 28, 2020
    Inventors: Jin-hyeong Park, Sasa Grbic, Matthias Fenchel, Esther Raithel, Dana Lin
  • Patent number: 10605880
    Abstract: A method for performing 3D body imaging includes performing a 3D MRI acquisition of a patient to acquire k-space data and dividing the k-space data into k-space data bins. Each bin includes a portion of the k-space data corresponding to a distinct breathing phase. 3D image sets are reconstructed from the bins, with each 3D image set corresponding to a distinct k-space data bin. For each bin other than a selected reference bin, forward and inverse transforms are calculated between the 3D image set corresponding to the bin and the 3D image set corresponding to the reference bin. Then, a motion corrected and averaged image is generated for each bin by (a) aligning the 3D image set from each other bin to the 3D image set corresponding to the bin using the transforms, and (b) averaging the aligned 3D image sets to yield the motion corrected and averaged image.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: March 31, 2020
    Assignees: Siemens Healthcare GmbH, Cedars-Sinai Medical Center
    Inventors: Xiaoming Bi, Jianing Pang, Zhaoyang Fan, Matthias Fenchel, Gerhard Laub, Debiao Li
  • Patent number: 10564244
    Abstract: A method is provided for ascertaining at least one item of movement information describing a sought movement as a partial movement of an overall movement in an at least partially moved examination region. In the method, at least one excitation signal having a first frequency band is output and receiving signals generated by the excitation signal are recorded with a receiving coil arrangement, (e.g., a receiving coil arrangement of a magnetic resonance device), having a plurality of receiving channels. The coils of the receiving coil arrangement are designed to record a receiving frequency band including the first frequency band, wherein for ascertaining the movement information the complex receiving signals of the receiving channels are combined at one instant according to a combination specification ascertained over a period by an analysis of the receiving signals that identifies at least one component of a movement that contributes to the sought movement.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: February 18, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Matthias Fenchel, Peter Speier
  • Patent number: 10460508
    Abstract: A framework for facilitating visualization, including localizing at least one anatomical structure of interest in image data. The structure of interest is then highlighted by reformatting the image data by mapping landmarks associated with the structure of interest to corresponding points along a contour of a geometric shape and warping the image data based on the mapped landmarks. The resulting reformatted image data is rendered for display to a user.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: October 29, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Yiqiang Zhan, Gerardo Hermosillo-Valadez, Xiang Sean Zhou, Matthias Fenchel, Berthold Kiefer
  • Patent number: 10393845
    Abstract: A transmitter for pilot tone navigation in a magnetic resonance tomography system includes a power supply and an antenna. The transmitter is configured to transmit a pilot tone signal via the antenna. The transmitter also includes a decoupling element in order to protect a transmitter output from signals that the antenna receives with excitation pulses of the magnetic resonance tomography system during a magnetic resonance tomography. In a method, movement-dependent changes to the pilot tone signal of the transmitter are identified by a controller of the magnetic resonance tomography system.
    Type: Grant
    Filed: December 3, 2016
    Date of Patent: August 27, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Steffen Schröter, Jan Bollenbeck, Matthias Fenchel, Peter Speier, Markus Vester
  • Patent number: 10386433
    Abstract: In a method and magnetic resonance apparatus for implementing a magnetic resonance fingerprinting examination of an examination subject, a first signal waveform database containing multiple first database signal waveforms is provided to a processor, and a second signal waveform database is generated therefrom with a fewer number of signal waveforms therein than said multiple first database signal waveforms. A magnetic resonance signal waveform of a voxel of an examination region is acquired using a magnetic resonance fingerprinting method, and this is compared to the second database signal waveforms, and the comparison result is provided in electronic form.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: August 20, 2019
    Assignee: Siemens Healthcare GmbH
    Inventor: Matthias Fenchel
  • Patent number: 10386441
    Abstract: In a method for attenuation correction of emission tomography scan data acquired from an examination object in a combined magnetic resonance emission tomography apparatus, wherein an interference object is situated in the examination region, which causes a magnetic interference field during combined magnetic resonance emission tomography imaging, magnetic resonance scan data of the examination object are acquired by executing a magnetic resonance sequence designed to at least partially compensate inference due to the magnetic interference field. Emission tomography scan data are acquired and an attenuation map is generated using the acquired magnetic resonance scan data. Attenuation correction of the emission tomography scan data is implemented using the generated attenuation map.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: August 20, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Theresa Bachschmidt, Matthias Fenchel, Bjoern Jakoby, Mathias Nittka
  • Patent number: 10310041
    Abstract: In a method and apparatus for the automatic assignment of at least one combination image of an examination object to a spin species represented in the combination image, relationships, which were determined from an existing database and which relate to the assignment of spin species to combination images, are loaded into a computer. At least two MR datasets at one of at least two echo times in each case following an excitation by means of a multi-contrast measurement are supplied to the computer. At least one combination image is determined in the computer from the at least two MR datasets. The spin species represented in the at least one combination image are assigned in the computer on the basis of the loaded relationships. By using relationships determined from an existing database, an automatic unambiguous global assignment of the correct spin species is enabled.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: June 4, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Matthias Fenchel, Marcel Dominik Nickel
  • Publication number: 20180293727
    Abstract: In a method and an apparatus for rib unfolding in an MR image, a computer is provided with an input data file formed of volumetric MR data that represent a 3D image of the rib cage and the lungs of a subject. A view is selected wherein the ribs in the rib cage are in approximated as curves, such as a transverse slice through the 3D image, or an oblique view of the 3D image. The lungs in the selected view are used in order to define a first smooth curved surface representation that is inside of the rib cage. Further ellipses are selectively defined starting from the first ellipse and moving outwardly from the first smooth curved surface representation that respectively proceed through rib pairs in the rib cage in the selected image. These further smooth curved surface representations are then used to unfold the 3D image, by cutting and straightening these further smooth curved surface representations, thereby obtaining an unfolded 3D image, which is then displayed at a display.
    Type: Application
    Filed: April 10, 2017
    Publication date: October 11, 2018
    Applicant: Siemens Healthcare GmbH
    Inventors: Matthias Fenchel, Yiqiang Zhan
  • Patent number: 9910117
    Abstract: In the magnetic resonance image data acquisition and apparatus, raw magnetic resonance data are acquired at multiple points along a trajectory in k-space from first and second magnetic resonance echo signals caused by a radio-frequency excitation pulse. The course of the trajectory in k-space is established by adjusting a magnetic field value of a gradient magnetic field. The gradient magnetic field has a field value of a first point in time of the trajectory curve and a subsequently modified and at a layer second point in time, the gradient magnetic field has the same field value as that said first point in time. The second point in time is before or during the acquisition of the raw magnetic resonance data of the first magnetic resonance echo signal. The shift value for the trajectory is determined and the trajectory is shifted according to this shift value, and an image is reconstructed from the shifted raw magnetic resonance data of the trajectory.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: March 6, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Matthias Fenchel, David Grodzki
  • Patent number: 9869741
    Abstract: A method for imaging a part region of an examination object in a magnetic resonance system. In an embodiment, a first and second gradient field are respectively created such that, at a respective first and second position at the edge of the field of view, a distortion caused by a non-linearity of the respective first and second gradient field, and a distortion caused by a Bo field inhomogeneity, cancel each other out. By way of the respective first and second gradient, respective first and second magnetic resonance data which contains the respective first and second position are acquired. A first and second respective readout direction, in which the respective first and second magnetic resonance data are acquired, are selected as a function of a location of the respective first and second position. From the magnetic resonance data, an image of the part region is defined.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 16, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jan Ole Blumhagen, Matthias Fenchel, Ralf Ladebeck, Harald H. Quick
  • Publication number: 20170328970
    Abstract: A method for performing 3D body imaging includes performing a 3D MRI acquisition of a patient to acquire k-space data and dividing the k-space data into k-space data bins. Each bin includes a portion of the k-space data corresponding to a distinct breathing phase. 3D image sets are reconstructed from the bins, with each 3D image set corresponding to a distinct k-space data bin. For each bin other than a selected reference bin, forward and inverse transforms are calculated between the 3D image set corresponding to the bin and the 3D image set corresponding to the reference bin. Then, a motion corrected and averaged image is generated for each bin by (a) aligning the 3D image set from each other bin to the 3D image set corresponding to the bin using the transforms, and (b) averaging the aligned 3D image sets to yield the motion corrected and averaged image.
    Type: Application
    Filed: May 9, 2017
    Publication date: November 16, 2017
    Inventors: Xiaoming Bi, Jianing Pang, Zhaoyang Fan, Matthias Fenchel, Gerhard Laub, Debiao Li
  • Publication number: 20170323444
    Abstract: In a magnetic resonance (MR) apparatus and segmentation method, a region in an MR image, acquired from a scan of a patient with an MR scanner of the apparatus, is provided to a computer for segmentation of the region from the overall image dataset. The segmentation takes place based on a classification of image elements of the image dataset, and the classification is iteratively re-trained in a weakly supervised learning algorithm based on examination-specific information provided to the computer.
    Type: Application
    Filed: May 9, 2016
    Publication date: November 9, 2017
    Applicant: Siemens Healthcare GmbH
    Inventors: Matthias Fenchel, Yiqiang Zhan
  • Patent number: 9799120
    Abstract: In a magnetic resonance (MR) apparatus and segmentation method, a region in an MR image, acquired from a scan of a patient with an MR scanner of the apparatus, is provided to a computer for segmentation of the region from the overall image dataset. The segmentation takes place based on a classification of image elements of the image dataset, and the classification is iteratively re-trained in a weakly supervised learning algorithm based on examination-specific information provided to the computer.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: October 24, 2017
    Assignee: Siemens Healthcare GmbH
    Inventors: Matthias Fenchel, Yiqiang Zhan
  • Patent number: 9778382
    Abstract: A method is disclosed for generating a motion-corrected PET image of an examination area in a combined MR-PET system. In an embodiment, the method includes recording PET events from the examination area in a first recording time frame; recording a number of MR images of the examination area in at least the first recording time frame; calculating an at least two-dimensional movement information of the examination area on the basis of the number of MR images, wherein the movement information describes the movement information of the examination area during the first recording time frame, and determining the motion-corrected PET image from the PET events using the calculated movement information.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: October 3, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Matthias Fenchel, Ralf Ladebeck
  • Patent number: 9763638
    Abstract: A method is disclosed for carrying out a positron emission tomography of an examination object in a hybrid system. In N consecutive time intervals, the following is carried out. For n=1 to n=N?1, nth magnetic resonance data and nth positron emission data is acquired in the nth time interval and as a function of this data, nth provisional attenuation correction values and nth provisional positron emission tomographies are determined during the (n+1)th time interval. In the Nth time interval Nth magnetic resonance data and Nth positron emission data is acquired and overall attenuation correction values are determined as a function of the Nth magnetic resonance data and the first to (N?1)th attenuation correction values and also a positron emission tomography is determined as a function of the overall attenuation correction values, the Nth positron emission data and the first to (N?1)th provisional positron emission tomographies.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: September 19, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Matthias Fenchel
  • Patent number: 9753113
    Abstract: In a method and magnetic resonance (MR) apparatus to image a partial region of an examination subject by means of a multislice measurement, which partial region includes at least two measurement slices, and is located at least in part at the edge of a field of view of the magnetic resonance apparatus, for each voxel to be optimized that is located at the edge of the field of view, a gradient field is configured for each measurement slice of the partial region that is to be measured and is used to acquire magnetic resonance data in the multislice measurement. The gradient field is configured so as to cause a nonlinearity of the gradient field and a B0 field inhomogeneity to cancel at each of the aforementioned voxel to be optimized at the partial region at the edge of the field of view. An image of the partial region of the examination subject is determined from the magnetic resonance data acquired in this manner.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: September 5, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jan Ole Blumhagen, Matthias Fenchel, Ralf Ladebeck
  • Patent number: 9741131
    Abstract: Disclosed herein is a framework for facilitating image processing. In accordance with one aspect, the framework receives first image data acquired by a first modality and one or more articulated models. The one or more articulated models may include at least one section image acquired by the first modality and aligned with a local image acquired by a second modality. The framework may align an anatomical region of the first image data with the section image and non-rigidly register a first region of interest extracted from the section image with a second region of interest extracted from the aligned anatomical region. To generate a segmentation mask of the anatomical region, the registered first region of interest may be inversely mapped to a subject space of the first image data.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: August 22, 2017
    Assignees: Siemens Medical Solutions USA, Inc., Siemens Aktiengesellschaft
    Inventors: Gerardo Hermosillo Valadez, Yiqiang Zhan, Xiang Sean Zhou, Matthias Fenchel, Berthold Kiefer
  • Patent number: 9730664
    Abstract: A set of first modality data (e.g., MR or CT) is provided. The set of first modality data comprises a plurality of mu-maps, a plurality of motion vectors and a plurality of gated data. Each of the mu-maps corresponds to one of the beds. A set of second modality data (e.g., PET/SPECT) is provided. The set of second modality data comprises a plurality of frames for each of the beds. Each of the plurality of frames is warped by one or more motion vectors of the plurality of motion vectors. A single-bed image is generated for each bed by summing the frames corresponding to the bed. A whole body image is generated by summing the single-bed images for each of the beds.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: August 15, 2017
    Inventors: Girish Bal, Matthias Fenchel, William Curtis Howe, Frank Kehren
  • Publication number: 20170160367
    Abstract: A transmitter for pilot tone navigation in a magnetic resonance tomography system includes a power supply and an antenna. The transmitter is configured to transmit a pilot tone signal via the antenna. The transmitter also includes a decoupling element in order to protect a transmitter output from signals that the antenna receives with excitation pulses of the magnetic resonance tomography system during a magnetic resonance tomography. In a method, movement-dependent changes to the pilot tone signal of the transmitter are identified by a controller of the magnetic resonance tomography system.
    Type: Application
    Filed: December 3, 2016
    Publication date: June 8, 2017
    Inventors: Steffen Schröter, Jan Bollenbeck, Matthias Fenchel, Peter Speier, Markus Vester