Patents by Inventor Ross M. Henkelman

Ross M. Henkelman 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: 5947900
    Abstract: An MRI system measures the movements of a subject during the acquisition of a series of NMR images and automatically updates the scan parameters such that the image plane or volume tracks the movement of the anatomy of interest. An array of tracking coils fasten to the subject and an NMR measurement pulse sequence is interleaved with the image acquisitions to measure the location of the tracking cols.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: September 7, 1999
    Assignee: General Electric Company
    Inventors: John A. Derbyshire, R. Scott Hinks, Graham A. Wright, Ross M. Henkelman
  • Patent number: 5363043
    Abstract: A method for producing dynamic images from a ghosted MR image is disclosed. The method includes acquiring an image data set including a time averaged image component and a ghost component and processing these components to produce a dynamic image. A motion monitoring system is not required as in conventional cine magnetic resonance imaging.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: November 8, 1994
    Assignee: Sunnybrook Health Science Center
    Inventors: Qing-San Xiang, Ross M. Henkelman
  • Patent number: 5363044
    Abstract: A method for manipulating motion ghosts is disclosed. The method includes acquiring two image data sets, each including a time averaged image component and a ghost component and processing these components to separate the ghosts from the desired image and further using the ghost information to produce a dynamic image. Motion monitoring systems are not required. Improved scan times and noise control are allowed over previous methods.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: November 8, 1994
    Assignee: Sunnybrook Health Science Center
    Inventors: Qing-San Xiang, Ross M. Henkelman
  • Patent number: 5309101
    Abstract: A method for MR imaging in an inhomogeneous magnetic field substantially without inhomogeneity induced artifacts is disclosed. The method includes acquiring more than one line of K-space per pulse sequence. The K-space data is acquired in partial line segments. The method allows shorter imaging times and higher image quality than conventional imaging methods for inhomogeneous fields.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: May 3, 1994
    Assignee: General Electric Company
    Inventors: Jae K. Kim, Donald B. Plewes, Ross M. Henkelman
  • Patent number: 5233302
    Abstract: An NMR imaging system performs a scan to acquire three sets of data which are Fourier transformed to produce three image data arrays. A corrected image data array is calculated from corresponding elements in the three acquired image data arrays. Image artifacts which cause ghosts in the reconstructed image are masked from the corrected image data by the calculations.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: August 3, 1993
    Assignee: General Electric Company
    Inventors: Qing-San Xiang, Ross M. Henkelman
  • Patent number: 5001429
    Abstract: Truncation artifacts in NMR images are reduced by splicing to the truncated data extrapolated high frequency data derived from the truncated image. The truncated data is Fourier transformed into image space and processed with an edge enhancing filter. The retransformed, filtered data yields edge derived high frequency information that may augment the truncated data. The spliced truncated data and edge enhanced data are then reconstructed into an artifact reduced image. In one embodiment, the edge enhancement is performed by iterative passes of a modified Sigma filter. The spliced data is blended with the truncated data near the regions of the splice by means of a weighted average.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: March 19, 1991
    Assignee: General Electric Company
    Inventors: Robert T. Constable, Ross M. Henkelman