Patents by Inventor Steen Moeller

Steen Moeller 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: 20210345871
    Abstract: The invention relates to a correlated set for minimal invasive surgery comprising a surgical instrument and a pattern generating member, a surgical system, a training kit, a method of training and a meth of performing a minimal invasive surgery. The surgical instrument comprises a handle portion, a surgical tool and a body portion connecting the handle portion to the surgical tool. The pattern generating member comprises a pattern light source and a projector for projecting a light pattern. The projector is adapted for being at least temporarily fixed to the body portion of the surgical instrument such that a movement of said surgical tool results in a correlated movement of said projector.
    Type: Application
    Filed: May 26, 2021
    Publication date: November 11, 2021
    Inventors: Steen Møller Hansen, Henriette Schultz Kirkegaard
  • Publication number: 20210345855
    Abstract: A depiction system for generating a real time correlated depiction of movements of a surgical tool for uses in minimally invasive surgery is described. In an embodiment the system includes a computer system, 3D surface data generation means and position data generation means for obtaining real time spatial position data of at least a part of the surgical tool. The 3D surface data generation means or the position data generation is adapted for providing surface position data of at least the target area. The computer system is programmed for determining depiction data representing a depiction of the real time relative spatial position(s) of the surgical tool onto at least a portion of the surface contour of the surface section of the minimally invasive surgery cavity.
    Type: Application
    Filed: May 26, 2021
    Publication date: November 11, 2021
    Inventors: Steen Møller Hansen, Henriette Schultz Kirkegaard
  • Publication number: 20210338268
    Abstract: A minimally invasive surgery system including a robot, a cannula assembly and a computer system. The robot has at least one movable robot arm and the cannula assembly is detachably mounted to the robot arm. The cannula assembly includes a cannula and a pattern generating member. The cannula has a distal end and a proximal end with a flange portion and an elongate cannula shaft portion extending from the proximal end to the distal end and an access port through the elongate cannula shaft portion. The pattern generating member includes a pattern light source and a projector temporarily or permanently fixed to the cannula shaft portion. The pattern light source is operatively connected to the projector for projecting a light pattern. The computer system is configured for in real time receiving image data representing light pattern reflections from a surgical surface and for determining a real-time spatial position of the cannula assembly relative to the surgical surface.
    Type: Application
    Filed: May 14, 2021
    Publication date: November 4, 2021
    Inventors: Steen Møller Hansen, Henriette Schultz Kirkegaard, André Hansen
  • Patent number: 11039734
    Abstract: A depiction system for generating a real time correlated depiction of movements of a surgical tool for uses in minimally invasive surgery is described. In an embodiment the system includes a computer system, 3D surface data generation means and position data generation means for obtaining real time spatial position data of at least a part of the surgical tool. The 3D surface data generation means or the position data generation is adapted for providing surface position data of at least the target area. The computer system is programmed for determining depiction data representing a depiction of the real time relative spatial position(s) of the surgical tool onto at least a portion of the surface contour of the surface section of the minimally invasive surgery cavity.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: June 22, 2021
    Assignee: 3DIntegrated Aps
    Inventors: Steen Møller Hansen, Henriette Schultz Kirkegaard
  • Patent number: 11033182
    Abstract: The invention relates to a correlated set for minimal invasive surgery comprising a surgical instrument and a pattern generating member, a surgical system, a training kit, a method of training and a meth of performing a minimal invasive surgery. The surgical instrument comprises a handle portion, a surgical tool and a body portion connecting the handle portion to the surgical tool. The pattern generating member comprises a pattern light source and a projector for projecting a light pattern. The projector is adapted for being at least temporarily fixed to the body portion of the surgical instrument such that a movement of said surgical tool results in a correlated movement of said projector.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: June 15, 2021
    Assignee: 3DIntegrated Aps
    Inventors: Steen Møller Hansen, Henriette Schultz Kirkegaard
  • Patent number: 11020144
    Abstract: A minimally invasive surgery system including a robot, a cannula assembly and a computer system. The robot has at least one movable robot arm and the cannula assembly is detachably mounted to the robot arm. The cannula assembly includes a cannula and a pattern generating member. The cannula has a distal end and a proximal end with a flange portion and an elongate cannula shaft portion extending from the proximal end to the distal end and an access port through the elongate cannula shaft portion. The pattern generating member includes a pattern light source and a projector temporarily or permanently fixed to the cannula shaft portion. The pattern light source is operatively connected to the projector for projecting a light pattern. The computer system is configured for in real time receiving image data representing light pattern reflections from a surgical surface and for determining a real-time spatial position of the cannula assembly relative to the surgical surface.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 1, 2021
    Assignee: 3DIntegrated Aps
    Inventors: Steen Møller Hansen, Henriette Schultz Kirkegaard, André Hansen
  • Patent number: 11009576
    Abstract: Described here are systems and methods for volumetric excitation in magnetic resonance imaging (“MRI”) using frequency modulated radio frequency (“RF”) pulses. In general, quadratic phase modulation along the slice encoding direction is implemented for additional spatiotemporal encoding, which better distributes signal content in the slice direction and enables higher acceleration rates that are robust to slice-undersampling.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: May 18, 2021
    Assignee: Regents of the University of Minnesota
    Inventors: Steen Moeller, Mehmet Akcakaya
  • Patent number: 10962617
    Abstract: Methods for fast magnetic resonance imaging (“MRI”) using a combination of outer volume suppression (“OVS”) and accelerated imaging, which may include simultaneous multislice (“SMS”) imaging, data acquisitions amenable to compressed sensing reconstructions, or combinations thereof. The methods described here do not introduce fold-over artifacts that are otherwise common to reduced field-of-view (“FOV”) techniques.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: March 30, 2021
    Assignee: Regents of the University of Minnesota
    Inventors: Sebastian Weingartner, Steen Moeller, Mehmet Akcakaya
  • Publication number: 20210090306
    Abstract: Methods for reconstructing images from undersampled k-space data using a machine learning approach to learn non-linear mapping functions from acquired k-space lines to generate unacquired target points across multiple coils are described.
    Type: Application
    Filed: March 14, 2018
    Publication date: March 25, 2021
    Inventors: Mehmet Akcakaya, Steen Moeller
  • Publication number: 20200341103
    Abstract: Images are reconstructed from undersampled k-space data using a residual machine learning algorithm (e.g., a ResNet architecture) to estimate missing k-space lines from acquired k-space data with improved noise resilience. Using a residual machine learning algorithm provides for combining the advantages of both linear and nonlinear k-space reconstructions. The linear residual connection can implement a convolution that estimates most of the energy in k-space, and the multi-layer machine learning algorithm can be implemented with nonlinear activation functions to estimate imperfections, such as noise amplification due to coil geometry, that arise from the linear component.
    Type: Application
    Filed: April 27, 2020
    Publication date: October 29, 2020
    Inventors: Mehmet Akcakaya, Steen Moeller, Chi Zhang
  • Publication number: 20200337588
    Abstract: Magnetic resonance imaging (“MRI”) data are corrected from corruptions due to physiological changes using a self-navigated phase correction technique. Unlike motion correction techniques, the effects of physiological changes (e.g., breathing and respiration) are corrected by making the MRI data self-consistent relative to an absolute uncorrupted phase reference. This phase correction information can be extracted from the acquisition itself, thereby eliminating the need for a separate navigator scan, and establishing an accelerated acquisition. This absolute reference can be computed in a data segmented space, and the subsequent data can be corrected relative to this absolute reference with low-resolution phases.
    Type: Application
    Filed: April 27, 2020
    Publication date: October 29, 2020
    Inventors: Steen Moeller, Sudhir Ramanna, Mehmet Akcakaya
  • Publication number: 20200333416
    Abstract: A fully sampled calibration data set, which may be Cartesian k-space data, is used to obtain targeted and optimal interpolation kernels for non-regularly sampled data. The calibration data are self-calibration data obtained from a time-averaged image, or re-sampled data. ACS data are resampled for calibration of region-specific kernels. Subsequently, an explicit noise-based regularized solution can be utilized to estimate region-specific kernels for reconstruction.
    Type: Application
    Filed: April 20, 2020
    Publication date: October 22, 2020
    Inventors: Steen Moeller, Mehmet Akcakaya, Seng-Wei Chieh
  • Patent number: 10768260
    Abstract: A system and method for controlling noise in magnetic resonance imaging (MRI) are provided. In one aspect, the method includes reconstructing a series of images of the target using the image data, with each image being defined using signal-to-noise (SNR) units, and selecting an image patch corresponding to the series of images. The method also includes forming a matrix by combining vectors generated using the image patch, and applying a local low rank denoising technique using the matrix and the series of images to generate at least one denoised image.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: September 8, 2020
    Assignee: Regents of the University of Minnesota
    Inventors: Steen Moeller, Mehmet Akcakaya
  • Patent number: 10564241
    Abstract: A method for generating a magnetic resonance image includes applying a radio frequency (RF) pulse to a specimen. The method includes modulating a spatially varying magnetic field to impart an angular velocity to a trajectory of a region of resonance relative to the specimen. The method includes acquiring data corresponding to the region of resonance and reconstructing a representation of the specimen based on the data.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 18, 2020
    Assignee: Regents of the University of Minnesota
    Inventors: Angela Lynn Styczynski Snyder, Curtis A. Corum, Djaudat S. Idiyatullin, Steen Moeller, Michael G. Garwood
  • Patent number: 10537265
    Abstract: A system includes a data receiver, a sinogram generator, a processor, a filter module, and an output module. The data receiver is configured to receive radial ordered magnetic resonance data. The sinogram generator is configured to generate a first sinogram corresponding to a view angle as a function of a readout direction for the magnetic resonance data. The processor is configured to generate an oscillogram having an angular frequency axis. The oscillogram corresponds to a Fourier transform of the first sinogram. The filter module is configured to selectively filter a peak in a projection formed along a selected axis of the oscillogram, the peak being related to an interference signal such as an RF interference. The selected axis is orthogonal to the angular frequency axis. The output module is configured to form a second sinogram corresponding to a transform of the filtered projection.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: January 21, 2020
    Assignee: Regents of the University of Minnesota
    Inventors: Curtis A. Corum, Djaudat S. Idiyatullin, Steen Moeller, Michael G. Garwood
  • Publication number: 20190086496
    Abstract: A system and method for controlling noise in magnetic resonance imaging (MRI) are provided. In one aspect, the method incudes reconstructing a series of images of the target using the image data, with each image being defined using signal-to-noise (SNR) units, and selecting an image patch corresponding to the series of images. The method also includes forming a matrix by combining vectors generated using the image patch, and applying a local low rank denoising technique using the matrix and the series of images to generate at least one denoised image.
    Type: Application
    Filed: September 17, 2018
    Publication date: March 21, 2019
    Inventors: Steen Moeller, Mehmet Akcakaya
  • Publication number: 20180292488
    Abstract: Described here are systems and methods for volumetric excitation in magnetic resonance imaging (“MRI”) using frequency modulated radio frequency (“RF”) pulses. In general, quadratic phase modulation along the slice encoding direction is implemented for additional spatiotemporal encoding, which better distributes signal content in the slice direction and enables higher acceleration rates that are robust to slice-undersampling.
    Type: Application
    Filed: April 6, 2018
    Publication date: October 11, 2018
    Inventors: Steen Moeller, Mehmet Akcakaya
  • Publication number: 20180292487
    Abstract: Methods for fast magnetic resonance imaging (“MRI”) using a combination of outer volume suppression (“OVS”) and accelerated imaging, which may include simultaneous multislice (“SMS”) imaging, data acquisitions amenable to compressed sensing reconstructions, or combinations thereof. The methods described here do not introduce fold-over artifacts that are otherwise common to reduced field-of-view (“FOV”) techniques.
    Type: Application
    Filed: April 6, 2018
    Publication date: October 11, 2018
    Inventors: Sebastian Weingartner, Steen Moeller, Mehmet Akcakaya
  • 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: 9880243
    Abstract: A method includes applying a pulse train to a spin system in a scanner. The pulse train has a plurality of discontinuities in a time domain. The method includes receiving a response from the spin system. The response corresponds to a gated signal. The method includes accessing a correction factor corresponding to the scanner. The method includes calculating a correction to the response based on the correction factor. The method includes generating an output based on the correction.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: January 30, 2018
    Assignee: Regents of the University of Minnesota
    Inventors: Curtis A. Corum, Steen Moeller, Djaudat S. Idiyatullin, Ryan Chamberlain, Michael G. Garwood