Patents by Inventor Esther Raithel

Esther Raithel 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: 20210231762
    Abstract: An embodiment of a method for recording diagnostic measurement data of a knee of an examination object in knee imaging by a magnetic resonance device, includes performing an overview scan of the knee of the examination object, wherein overview measurement data is acquired in the overview scan, and performing diagnostic scans of the knee of the examination object based on the acquired overview measurement data, wherein two-dimensional diagnostic measurement data is acquired in the diagnostic scans.
    Type: Application
    Filed: November 1, 2018
    Publication date: July 29, 2021
    Applicants: Siemens Healthcare GmbH, The Johns Hopkins University
    Inventors: Jan FRITZ, Dingxin WANG, Esther RAITHEL, Thomas BECK, Flavio CARINCI, Mario ZELLER
  • Patent number: 10895622
    Abstract: Techniques are disclosed to leverage the use of neural networks or similar machine learning algorithms to de-noise highly accelerated Wave-CAIPIRINHA scans. The described techniques facilitate the generation of 3D sequences using a greatly reduced scan time, with the resulting images having a high spatial resolution and an improved SNR compared to conventional approaches.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: January 19, 2021
    Assignees: Siemens Healthcare GmbH, The General Hospital Corporation
    Inventors: Daniel Polak, Esther Raithel, Kawin Setsompop
  • Patent number: 10820837
    Abstract: In a method for alpha angle measurements of a bone joint based on magnetic resonance imaging (MRI) data of the bone joint, a three-dimensional (3D) bone surface image of the bone joint is generated based on two-dimensional (2D) segmentations on radial plane slices of the bone joint. Based on the 3D bone surface image, a head center of a head of the bone joint and a neck axis of a neck of the bone joint are estimated. An alpha angle model is constructed based on the estimated head center and neck axis. Further, the alpha angle measurement is determined for each of the radial plane slices of the bone joint based on the constructed alpha angle model.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: November 3, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Liang Zhao, Esther Raithel, Yiqiang Zhan
  • Patent number: 10823806
    Abstract: Magnetic resonance (MR) data are acquired by applying magnetic fields to an examination region concurrent with stimulated echo signals, such that trajectories, which are not straight lines, are generated in k-space. For this purpose, sequence of RF pulses is applied to generate the stimulated echo signals in the examination object, undersampled MR measurement data are detected during reception of the stimulated echo signals in the at least two receiving coils, along the curved k-space trajectories, and fully sampled MR measurement are generated from the undersampled MR measurement data using sensitivity information of the at least two receiving coils. Alternatively, the MR measurement data are fully sampled in a central region of k-space, and a region outside the central region is not fully sampled, and a phase correction with a Partial Fourier technique is executed on the MR measurement data using fully sampled MR measurement data from the central region of k-space.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: November 3, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Daniel Polak, Yen Mei Lisa Chuah, Esther Raithel
  • 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
  • Publication number: 20190307366
    Abstract: In a method for alpha angle measurements of a bone joint based on magnetic resonance imaging (MRI) data of the bone joint, a three-dimensional (3D) bone surface image of the bone joint is generated based on two-dimensional (2D) segmentations on radial plane slices of the bone joint. Based on the 3D bone surface image, a head center of a head of the bone joint and a neck axis of a neck of the bone joint are estimated. An alpha angle model is constructed based on the estimated head center and neck axis. Further, the alpha angle measurement is determined for each of the radial plane slices of the bone joint based on the constructed alpha angle model.
    Type: Application
    Filed: April 9, 2019
    Publication date: October 10, 2019
    Inventors: Liang Zhao, Esther Raithel, Yiqiang Zhan
  • Publication number: 20190285713
    Abstract: Techniques are disclosed to leverage the use of neural networks or similar machine learning algorithms to de-noise highly accelerated Wave-CAIPIRINHA scans. The described techniques facilitate the generation of 3D sequences using a greatly reduced scan time, with the resulting images having a high spatial resolution and an improved SNR compared to conventional approaches.
    Type: Application
    Filed: March 1, 2019
    Publication date: September 19, 2019
    Applicants: Siemens Healthcare GmbH, The General Hospital Corporation
    Inventors: Daniel Polak, Esther Raithel, Kawin Setsompop
  • Patent number: 10353038
    Abstract: In a method and apparatus for the examination of a predetermined volume portion of an object with a magnetic resonance (MR) fingerprinting procedure, an MR signal curve for voxels of the volume portion is acquired, and a comparison of the MR signal curve of the respective voxel is made with stored MR signal curves in order to determine the stored MR signal curve that conforms most closely to the MR signal curve, with the result of the comparison then being made available as an output. The comparison with the MR signal curve of the voxel is (initially) performed with a specific number of signal points of the MR signal curve. A quality measure is determined with which the quality of the most closely conforming stored MR signal curves is determined. The performance of the comparison for the respective voxel is repeated if the quality measure is below a predetermined quality threshold value, with the number of signal points being first increased by a difference number.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: July 16, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: David Grodzki, Esther Raithel
  • Publication number: 20190154784
    Abstract: Magnetic resonance (MR) data are acquired by applying magnetic fields to an examination region concurrent with stimulated echo signals, such that trajectories, which are not straight lines, are generated in k-space. For this purpose, sequence of RF pulses is applied to generate the stimulated echo signals in the examination object, undersampled MR measurement data are detected during reception of the stimulated echo signals in the at least two receiving coils, along the curved k-space trajectories, and fully sampled MR measurement are generated from the undersampled MR measurement data using sensitivity information of the at least two receiving coils. Alternatively, the MR measurement data are fully sampled in a central region of k-space, and a region outside the central region is not fully sampled, and a phase correction with a Partial Fourier technique is executed on the MR measurement data using fully sampled MR measurement data from the central region of k-space.
    Type: Application
    Filed: November 22, 2017
    Publication date: May 23, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Daniel Polak, Yen Mei Lisa Chuah, Esther Raithel
  • Patent number: 10068328
    Abstract: A method for sparse iterative phase correction for Magnetic Resonance (MR) partial Fourier reconstruction includes acquiring a partial Fourier k-space dataset using an MR scanner and estimating, by a control computer, a coil sensitivity map associated with the MR scanner from fully sampled k-space center. The control computer extracts a symmetrically sampled k-space center dataset from the partial Fourier k-space dataset and determines a low-resolution image based on the symmetrically sampled k-space center dataset and the coil sensitivity map. The control computer also determines phase corresponding to the low-resolution image. An iterative reconstruction process may then be applied to generate an image based on the partial Fourier k-space dataset. This iterative reconstruction process applies a Fast Iterative Shrinkage Thresholding Algorithm (FISTA) with phase correction based on the phase corresponding to the low-resolution image.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: September 4, 2018
    Assignee: Siemens Healthcare GmbH
    Inventors: Qiu Wang, Esther Raithel
  • Patent number: 10058287
    Abstract: In a method and apparatus for acquiring a magnetic resonance imaging dataset of an area to be examined of a patient by magnetic resonance data are acquired over a prespecified acquisition period which has been fixed for the acquisition process. This acquisition period is divided into a number of sub-periods. For each sub-dataset of the magnetic resonance data acquired by undersampling in a sub-period, at least one motion value describing the motion status of the area to be examined is determined, and the data subsets to be used for the reconstruction of the magnetic resonance imaging dataset are selected in dependence on the motion values in order to minimize motion artifacts.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: August 28, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heiko Meyer, Esther Raithel
  • Patent number: 9974490
    Abstract: In a method and magnetic resonance apparatus for segmenting image data of an examination object, raw data of the examination object are achieved with the operation of a magnetic resonance scanner. Quantitative image data of the examination object are then calculated in a processor from the raw data. At least one physical variable of the examination object is quantitatively ascertained pixelwise and is displayed. The quantitative image data are segmented for identification of predetermined objects in the quantitative image data, and displayed in a display unit.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: May 22, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Theresa Bachschmidt, David Grodzki, Heiko Meyer, Mathias Nittka, Esther Raithel
  • Publication number: 20170178318
    Abstract: A method for sparse iterative phase correction for Magnetic Resonance (MR) partial Fourier reconstruction includes acquiring a partial Fourier k-space dataset using an MR scanner and estimating, by a control computer, a coil sensitivity map associated with the MR scanner from fully sampled k-space center. The control computer extracts a symmetrically sampled k-space center dataset from the partial Fourier k-space dataset and determines a low-resolution image based on the symmetrically sampled k-space center dataset and the coil sensitivity map. The control computer also determines phase corresponding to the low-resolution image. An iterative reconstruction process may then be applied to generate an image based on the partial Fourier k-space dataset. This iterative reconstruction process applies a Fast Iterative Shrinkage Thresholding Algorithm (FISTA) with phase correction based on the phase corresponding to the low-resolution image.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 22, 2017
    Inventors: Qiu Wang, Esther Raithel
  • Publication number: 20160377692
    Abstract: A magnetic resonance coil apparatus, a magnetic resonance apparatus and a method for handling a magnetic resonance coil apparatus are provided. The magnetic resonance coil apparatus includes a first coil unit and a second coil unit. The first coil unit and the second coil unit are configured to rotate about a longitudinal axis relative to one another.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 29, 2016
    Inventors: Peter Gall, Andreas Greiser, Martin Harder, Katharina Hesels, Hans-Peter Hollenbach, Esther Raithel, Stephan Zink
  • Publication number: 20160199004
    Abstract: In a method and apparatus for acquiring a magnetic resonance imaging dataset of an area to be examined of a patient by magnetic resonance data are acquired over a prespecified acquisition period which has been fixed for the acquisition process. This acquisition period is divided into a number of sub-periods. For each sub-dataset of the magnetic resonance data acquired by undersampling in a sub-period, at least one motion value describing the motion status of the area to be examined is determined, and the data subsets to be used for the reconstruction of the magnetic resonance imaging dataset are selected in dependence on the motion values in order to minimize motion artifacts.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Heiko Meyer, Esther Raithel
  • Publication number: 20160155238
    Abstract: In a method and magnetic resonance apparatus for segmenting image data of an examination object, raw data of the examination object are achieved with the operation of a magnetic resonance scanner. Quantitative image data of the examination object are then calculated in a processor from the raw data. At least one physical variable of the examination object is quantitatively ascertained pixelwise and is displayed. The quantitative image data are segmented for identification of predetermined objects in the quantitative image data, and displayed in a display unit.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 2, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Theresa Bachschmidt, David Grodzki, Heiko Meyer, Mathias Nittka, Esther Raithel
  • Publication number: 20160139227
    Abstract: In a method and apparatus for the examination of a predetermined volume portion of an object with a magnetic resonance (MR) fingerprinting procedure, an MR signal curve for voxels of the volume portion is acquired, and a comparison of the MR signal curve of the respective voxel is made with stored MR signal curves in order to determine the stored MR signal curve that conforms most closely to the MR signal curve, with the result of the comparison then being made available as an output. The comparison with the MR signal curve of the voxel is (initially) performed with a specific number of signal points of the MR signal curve. A quality measure is determined with which the quality of the most closely conforming stored MR signal curves is determined. The performance of the comparison for the respective voxel is repeated if the quality measure is below a predetermined quality threshold value, with the number of signal points being first increased by a difference number.
    Type: Application
    Filed: November 17, 2015
    Publication date: May 19, 2016
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: David Grodzki, Esther Raithel
  • Publication number: 20160097830
    Abstract: In order to make it possible to take account of movement of an examination object in a magnetic resonance fingerprinting method, multiple magnetic resonance raw images of an examination area of the examination object are acquired by execution of a magnetic resonance fingerprinting method, multiple magnetic resonance signal waveforms are generated in a processor over different voxels of the multiple magnetic resonance raw images. A signal comparison of the multiple magnetic resonance signal waveforms is made with multiple database signal waveforms stored in a database, with a database value of at least one tissue parameter being logically linked to each database signal waveform of the multiple database signal waveforms. A tissue parameter map is determined on the basis of the result of the signal comparison, wherein said tissue parameter map is movement corrected based on a movement correction. The tissue parameter map is made available at an output of the processor.
    Type: Application
    Filed: August 12, 2015
    Publication date: April 7, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: David Grodzki, Stefan Huwer, Esther Raithel