Patents by Inventor Dingxin Wang

Dingxin Wang 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
  • Publication number: 20200341099
    Abstract: A method for generating a perfusion weighted image using arterial spin labeling (ASL) with segmented acquisitions includes dividing an anatomical area of interest into a plurality of slices and performing a multi-band (MB) echo planar imaging (EPI) acquisition process using a magnetic resonance imaging (MRI) system to acquire a control image dataset representative of the plurality of slices using a central-to-peripheral or peripheral-to-central slice acquisition order. An ASL preparation process is performed using the MRI system to magnetically label protons in arterial blood water in an area upstream from the anatomical area of interest. Following a post-labeling delay time period, the MB EPI acquisition process is performed to a labeled image dataset corresponding to the slices using the central-to-peripheral or peripheral-to-central slice acquisition order. A perfusion weighted image of the anatomical area is generated by subtracting the labeled image dataset from the control image dataset.
    Type: Application
    Filed: July 29, 2019
    Publication date: October 29, 2020
    Inventors: Xiufeng Li, Gregory J. Metzger, Essa Yacoub, Kamil Ugurbil, Dingxin Wang
  • Patent number: 10788970
    Abstract: A system comprises presentation of a user interface on the display for inputting a first set of parameter values for a magnetic resonance scan, reception of the first set of parameter values for the magnetic resonance scan from a user via the displayed user interface, and automatic determination, based on the first set of parameter values, of first additional parameter values for the magnetic resonance scan.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: September 29, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Vibhas S. Deshpande, Peter Kollasch, Dingxin Wang
  • Patent number: 10613171
    Abstract: Embodiments can provide a method for multi-banded RF-pulse enhanced magnetization imaging, the method comprising determining, by a processor, a frequency offset against a central frequency by specifying an offset frequency for one or more RF coils close to a frequency peak of mobile water; and simultaneously applying, by one or more RF coils, one or more bands of Gaussian RF pulses around the central frequency to a patient from a medical imaging device; wherein the one or more bands of Gaussian RF pulses are symmetrically applied having a distance from the central frequency equal to the frequency offset.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: April 7, 2020
    Assignees: Siemens Healthcare GmbH, Regents of the University of Minnesota
    Inventors: Xiufeng Li, Gregory J. Metzger, Kamil Ugurbil, Dingxin Wang
  • Patent number: 10186032
    Abstract: Embodiments can provide a computer-implemented method for simultaneous multi-slice pulse wave velocity measurement, the method comprising simultaneously acquiring a plurality of multiple parallel images slices from a medical imaging device; shifting the plurality of image slices through modulation of the line-by-line phase patterns for each slice in the plurality of slices; deriving a plurality of image waveforms from the plurality of slices; measuring a distance between a plurality of imaging planes corresponding to the plurality of image slices; determining, for each of the image waveforms, a time-to marker; determining the temporal shift by calculating the difference between the time-to markers; and computing the pulse wave velocity by dividing the distance between the plurality of imaging planes by the temporal shift.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 22, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Ning Jin, Jiang Pang, Dingxin Wang, Peter Speier, Shivraman Giri
  • Publication number: 20180365823
    Abstract: Embodiments can provide a computer-implemented method for simultaneous multi-slice pulse wave velocity measurement, the method comprising simultaneously acquiring a plurality of multiple parallel images slices from a medical imaging device; shifting the plurality of image slices through modulation of the line-by-line phase patterns for each slice in the plurality of slices; deriving a plurality of image waveforms from the plurality of slices; measuring a distance between a plurality of imaging planes corresponding to the plurality of image slices; determining, for each of the image waveforms, a time-to marker; determining the temporal shift by calculating the difference between the time-to markers; and computing the pulse wave velocity by dividing the distance between the plurality of imaging planes by the temporal shift.
    Type: Application
    Filed: June 15, 2017
    Publication date: December 20, 2018
    Inventors: Ning Jin, Jiang Pang, Dingxin Wang, Peter Speier, Shivraman Giri
  • Publication number: 20180267120
    Abstract: Embodiments can provide a method for multi-banded RF-pulse enhanced magnetization imaging, the method comprising determining, by a processor, a frequency offset against a central frequency by specifying an offset frequency for one or more RF coils close to a frequency peak of mobile water; and simultaneously applying, by one or more RF coils, one or more bands of Gaussian RF pulses around the central frequency to a patient from a medical imaging device; wherein the one or more bands of Gaussian RF pulses are symmetrically applied having a distance from the central frequency equal to the frequency offset.
    Type: Application
    Filed: June 15, 2017
    Publication date: September 20, 2018
    Inventors: Xiufeng Li, Gregory J. Metzger, Kamil Ugurbil, Dingxin Wang
  • Patent number: 10074037
    Abstract: Systems and methods for determining optimized imaging parameters for imaging a patient include learning a model of a relationship between known imaging parameters and a quality measure, the known imaging parameters and the quality measure being determined from training data. Optimized imaging parameters are determined by optimizing the quality measure using the learned model. Images of the patient are acquired using the optimized imaging parameters.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: September 11, 2018
    Assignee: Siemens Healthcare GmbH
    Inventors: Xiaoguang Lu, Vibhas Deshpande, Peter Kollasch, Dingxin Wang, Puneet Sharma
  • Patent number: 10061005
    Abstract: A magnetic resonance method and system are provided for providing improved multi-band (MB) magnetic resonance imaging. The adaptive MB imaging can be achieved by providing one or more modified multi-band excitation pulse sequences that include at least either one nullified “dummy” slice within a slab that is not excited simultaneously with the other slices during a single multislice acquisition sequence, or one excitation slice group that utilizes a non-uniform slice spacing between simultaneously excited slices. Adaptive GRAPPA or slice-GRAPPA kernel sizes can also be used during image reconstruction to improve speed without excessive point spread blurring or MB reconstruction failure. A total leakage factor (TLF) can also be determined based on test images using modified MB excitation sequences, and used to improve the adaptive MB procedure.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: August 28, 2018
    Assignees: Siemens Healthcare GmbH, Regents of the University of Minnesota
    Inventors: Xiufeng Li, Steen Moeller, Gregory J. Metzger, Kamil Ugurbil, Dingxin Wang, Vibhas S. Deshpande
  • Patent number: 9989610
    Abstract: A computer-implemented method for performing multi-band slice accelerated imaging includes performing a low-resolution fast multi-dimensional reference scan to obtain a coil sensitivity map. A multiband imaging scan is performed to acquire a plurality of k-space lines representative of an anatomical area of interest. A multi-band signal corresponding to the plurality of k-space lines is separated into a plurality of image slices using a parallel imaging reconstruction technique and the coil sensitivity map.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: June 5, 2018
    Assignees: Siemens Healthcare GmbH, Regents of the University of Minnesota
    Inventors: Dingxin Wang, Vibhas Deshpande, Xiufeng Li, Kamil Ugurbil
  • Patent number: 9911206
    Abstract: A method for generating a perfusion weighted image using ASL with segmented acquisitions includes dividing an anatomical area of interest into slices and performing an EPI acquisition process using an MRI system to acquire a control image dataset representative of the slices. An ASL preparation process is performed using the MRI system to magnetically label protons in arterial blood water upstream from the anatomical area of interest. Following a first time period, a multi-band EPI acquisition process is performed using the MRI system to acquire a first labeled image dataset representative of a first subset of the slices. Following a second time period, another multi-band EPI acquisition process is performed using the MRI system to acquire a second labeled image dataset representative of a second subset of the slices. A perfusion weighted image is generated by subtracting the first and second labeled image dataset from the control image dataset.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: March 6, 2018
    Assignees: Siemens Healthcare GmbH, National Institutes of Health (NIH)
    Inventors: Xiufeng Li, Gregory J. Metzger, Kamil Ugurbil, Dingxin Wang
  • Publication number: 20170364252
    Abstract: A system comprises presentation of a user interface on the display for inputting a first set of parameter values for a magnetic resonance scan, reception of the first set of parameter values for the magnetic resonance scan from a user via the displayed user interface, and automatic determination, based on the first set of parameter values, of first additional parameter values for the magnetic resonance scan.
    Type: Application
    Filed: June 21, 2016
    Publication date: December 21, 2017
    Inventors: Vibhas S. Deshpande, Peter Kollasch, Dingxin Wang
  • Publication number: 20170351937
    Abstract: Systems and methods for determining optimized imaging parameters for imaging a patient include learning a model of a relationship between known imaging parameters and a quality measure, the known imaging parameters and the quality measure being determined from training data. Optimized imaging parameters are determined by optimizing the quality measure using the learned model. Images of the patient are acquired using the optimized imaging parameters.
    Type: Application
    Filed: June 3, 2016
    Publication date: December 7, 2017
    Inventors: Xiaoguang Lu, Vibhas Deshpande, Peter Kollasch, Dingxin Wang, Puneet Sharma
  • Patent number: 9588209
    Abstract: A method for performing multi-slice MR Elastography on an anatomical region of interest associated with a patient includes inducing shear waves at a shear wave frequency value (e.g., between 25-500 Hz) in the anatomical region of interest using an external driver. Next, the anatomical region of interest is imaged during a single patient breath-hold using an MRI acquisition process. Following the MRI acquisition process(es), phase images of the anatomical region of interest are generated based on an acquired RF signal. These phase images may then be processed (e.g., using an inversion algorithm) to generate one or more quantitative images depicting stiffness of the anatomical region of interest. In some embodiments, a wave image is also generated showing propagation of the plurality of shear waves through the anatomical region of interest based on the phase images.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: March 7, 2017
    Assignee: Siemens Healthcare GmbH
    Inventors: Agus Priatna, Dingxin Wang, Himanshu Bhat
  • Publication number: 20160203603
    Abstract: A method for generating a perfusion weighted image using ASL with segmented acquisitions includes dividing an anatomical area of interest into slices and performing an EPI acquisition process using an MRI system to acquire a control image dataset representative of the slices. An ASL preparation process is performed using the MRI system to magnetically label protons in arterial blood water upstream from the anatomical area of interest. Following a first time period, a multi-band EPI acquisition process is performed using the MRI system to acquire a first labeled image dataset representative of a first subset of the slices. Following a second time period, another multi-band EPI acquisition process is performed using the MRI system to acquire a second labeled image dataset representative of a second subset of the slices. A perfusion weighted image is generated by subtracting the first and second labeled image dataset from the control image dataset.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 14, 2016
    Inventors: Xiufeng Li, Gregory J. Metzger, Kamil Ugurbil, Dingxin Wang
  • Publication number: 20150309142
    Abstract: A magnetic resonance method and system are provided for providing improved multi-band (MB) magnetic resonance imaging. The adaptive MB imaging can be achieved by providing one or more modified multi-band excitation pulse sequences that include at least either one nullified “dummy” slice within a slab that is not excited simultaneously with the other slices during a single multislice acquisition sequence, or one excitation slice group that utilizes a non-uniform slice spacing between simultaneously excited slices. Adaptive GRAPPA or slice-GRAPPA kernel sizes can also be used during image reconstruction to improve speed without excessive point spread blurring or MB reconstruction failure. A total leakage factor (TLF) can also be determined based on test images using modified MB excitation sequences, and used to improve the adaptive MB procedure.
    Type: Application
    Filed: April 27, 2015
    Publication date: October 29, 2015
    Inventors: Xiufeng Li, Steen Moeller, Gregory J. Metzger, Kamil Ugurbil, Dingxin Wang, Vibhas S. Deshpande
  • Publication number: 20150301133
    Abstract: A method for performing multi-slice MR Elastography on an anatomical region of interest associated with a patient includes inducing shear waves at a shear wave frequency value (e.g., between 25-500 Hz) in the anatomical region of interest using an external driver. Next, the anatomical region of interest is imaged during a single patient breath-hold using an MRI acquisition process. Following the MRI acquisition process(es), phase images of the anatomical region of interest are generated based on an acquired RF signal. These phase images may then be processed (e.g., using an inversion algorithm) to generate one or more quantitative images depicting stiffness of the anatomical region of interest. In some embodiments, a wave image is also generated showing propagation of the plurality of shear waves through the anatomical region of interest based on the phase images.
    Type: Application
    Filed: April 18, 2014
    Publication date: October 22, 2015
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventors: Agus Priatna, Dingxin Wang, Himanshu Bhat
  • Publication number: 20150115958
    Abstract: A computer-implemented method for performing multi-band slice accelerated imaging includes performing a low-resolution fast multi-dimensional reference scan to obtain a coil sensitivity map. A multiband imaging scan is performed to acquire a plurality of k-space lines representative of an anatomical area of interest. A multi-band signal corresponding to the plurality of k-space lines is separated into a plurality of image slices using a parallel imaging reconstruction technique and the coil sensitivity map.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 30, 2015
    Inventors: Dingxin Wang, Vibhas Deshpande, Xiufeng Li, Kamil Ugurbil
  • Patent number: 8103076
    Abstract: A method to serially determine changes in perfusion to tissues is provided. This method involves injecting contrast material into a catheter that is positioned in the blood supply proximal to the targeted tissue of interest, acquiring a time series of images that depicts the uptake of this contrast material within the tissue, deriving semi-quantitative or quantitative perfusion metrics based upon the time series of perfusion images, altering perfusion to the targeted tissue by means of injecting pharmacologic agents or embolic agents into the blood vessels supplying the targeted tissue, repeating the acquisition of perfusion images to serially monitor changes in tissue perfusion after each alteration, and calculating changes in perfusion metrics after each series of perfusion images. This method is used to monitor changes in perfusion to various tissues, including a diverse array of tumors.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: January 24, 2012
    Assignee: Northwestern University
    Inventors: Andrew Christian Larson, Reed Ali Omary, Dingxin Wang
  • Publication number: 20090116711
    Abstract: A method to serially determine changes in perfusion to tissues is provided. This method involves injecting contrast material into a catheter that is positioned in the blood supply proximal to the targeted tissue of interest, acquiring a time series of images that depicts the uptake of this contrast material within the tissue, deriving semi-quantitative or quantitative perfusion metrics based upon the time series of perfusion images, altering perfusion to the targeted tissue by means of injecting pharmacologic agents or embolic agents into the blood vessels supplying the targeted tissue, repeating the acquisition of perfusion images to serially monitor changes in tissue perfusion after each alteration, and calculating changes in perfusion metrics after each series of perfusion images. This method is used to monitor changes in perfusion to various tissues, including a diverse array of tumors.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 7, 2009
    Inventors: Andrew Christian Larson, Reed Ali Omary, Dingxin Wang