Patents by Inventor Jamal J. Derakhshan

Jamal J. Derakhshan 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: 9480535
    Abstract: Systems, methods, and other embodiments associated with tracking an ablative device and monitoring an ablation produced by the ablative device are described. One example method includes acquiring a magnetic resonance (MR) image of an ablative device inserted in a body and selectively controlling positioning of the ablative device based, at least in part on the MR image. The MR image may be continuously provided in real-time by an interventional MR imaging apparatus programmed to image using a tri-orthogonal plane sequence. The method may also include acquiring an MR image of an ablation performed by the ablative device, and selectively controlling the ablative device based, at least in part, on the MR image. The MR image may also be provided by the IMRI apparatus operating according to a tri-orthogonal plane sequence. In one example, the ablation may treat hypopharyngeal obstructive sleep apnea by reducing tongue base volume.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: November 1, 2016
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Sherif G. Nour, Jeffrey L. Duerk, Jamal J. Derakhshan
  • Patent number: 8648593
    Abstract: Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: February 11, 2014
    Inventors: Jeffrey L. Duerk, Jeffrey L. Sunshine, Mark A. Griswold, Jamal J. Derakhshan, Sherif G. Nour
  • Patent number: 8208986
    Abstract: Systems, methods, and other embodiments associated with steady state dark blood magnetic resonance imaging MRI are described. One example method includes controlling an MRI apparatus to produce a steady state pulse sequence. The example method may also include controlling the MRI apparatus to generate radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence. The steady state pulse sequence is different from conventional steady state pulses in that it is characterized by regularly spaced slice selection excitation pulses to excite a region to be imaged in an object to be imaged using a consistent repetition time (TR), a set of readout modules, and a set of a magnetization preparation modules. A magnetization preparation module is characterized by gradients associated with imaging not being active, gradients associated with slice selection being active, and RF pulses associated with slice selection being active.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: June 26, 2012
    Inventors: Jeffrey L. Duerk, Mark A. Griswold, Jeffrey L. Sunshine, Jamal J. Derakhshan
  • Patent number: 8188735
    Abstract: Systems, methods, and other embodiments associated with RE-TOSSI are described. One system embodiment includes an MRI apparatus configured to produce a RE-TOSSI pulse sequence and to acquire T2-weighted images in response to the RE-TOSSI pulse sequence. An example RE-TOSSI pulse sequence includes a TOSSI portion and a non-inverting, non-TOSSI portion.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: May 29, 2012
    Inventors: Jamal J. Derakhshan, Mark A. Griswold, Jeffrey L. Duerk
  • Patent number: 8169217
    Abstract: Systems methods, and other embodiments associated with acquiring intersecting TrueFISP images using grouped reverse centric phase encoding are described. One example method includes controlling an MRI apparatus to produce a TrueFISP sequence that delays acquisition of the center of k-space to reduce saturation banding artifacts. The example method also includes controlling the MRI apparatus to produce a TrueFISP sequence that reduces eddy current artifacts by grouping (e.g., pairing) lines in k-space. The method concludes by acquiring NMR signal in response to the TrueFISP sequence.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: May 1, 2012
    Inventors: Jeffrey L. Duerk, Jeffrey L. Sunshine, Mark A. Griswold, Jamal J. Derakhshan
  • Publication number: 20120001630
    Abstract: Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.
    Type: Application
    Filed: August 31, 2011
    Publication date: January 5, 2012
    Inventors: Jeffrey L. DUERK, Jeffrye L. Sunshine, Mark A. Griswold, Jamal J. Derakhshan, Sherif G. Nour
  • Patent number: 8030919
    Abstract: Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: October 4, 2011
    Assignee: Case Western Reserve University
    Inventors: Jeffrey L. Duerk, Jeffrey L. Sunshine, Mark A. Griswold, Jamal J. Derakhshan, Sherif G. Nour
  • Publication number: 20100063380
    Abstract: Systems, methods, and other embodiments associated with steady state dark blood magnetic resonance imaging MRI are described. One example method includes controlling an MRI apparatus to produce a steady state pulse sequence. The example method may also include controlling the MRI apparatus to generate radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence. The steady state pulse sequence is different from conventional steady state pulses in that it is characterized by regularly spaced slice selection excitation pulses to excite a region to be imaged in an object to be imaged using a consistent repetition time (TR), a set of readout modules, and a set of a magnetization preparation modules. A magnetization preparation module is characterized by gradients associated with imaging not being active, gradients associated with slice selection being active, and RF pulses associated with slice selection being active.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 11, 2010
    Applicant: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Jeffrey L. Duerk, Mark A. Griswold, Jeffrey L. Sunshine, Jamal J. Derakhshan
  • Publication number: 20090261827
    Abstract: Systems methods, and other embodiments associated with acquiring intersecting TrueFISP images using grouped reverse centric phase encoding are described. One example method includes controlling an MRI apparatus to produce a TrueFISP sequence that delays acquisition of the center of k-space to reduce saturation banding artifacts. The example method also includes controlling the MRI apparatus to produce a TrueFISP sequence that reduces eddy current artifacts by grouping (e.g., pairing) lines in k-space. The method concludes by acquiring NMR signal in response to the TrueFISP sequence.
    Type: Application
    Filed: April 15, 2009
    Publication date: October 22, 2009
    Inventors: Jeffrey L. DUERK, Jeffrey L. Sunshine, Mark A. Griswold, Jamal J. Derakhshan
  • Publication number: 20090264730
    Abstract: Systems, methods, and other embodiments associated with tracking an ablative device and monitoring an ablation produced by the ablative device are described. One example method includes acquiring a magnetic resonance (MR) image of an ablative device inserted in a body and selectively controlling positioning of the ablative device based, at least in part on the MR image. The MR image may be continuously provided in real-time by an interventional MR imaging apparatus programmed to image using a tri-orthogonal plane sequence. The method may also include acquiring an MR image of an ablation performed by the ablative device, and selectively controlling the ablative device based, at least in part, on the MR image. The MR image may also be provided by the IMRI apparatus operating according to a tri-orthogonal plane sequence. In one example, the ablation may treat hypopharyngeal obstructive sleep apnea by reducing tongue base volume.
    Type: Application
    Filed: April 15, 2009
    Publication date: October 22, 2009
    Inventors: Sherif G. Nour, Jeffrey L. DUERK, Jamal J. Derakhshan
  • Publication number: 20090177075
    Abstract: Systems, methods, and other embodiments associated with RE-TOSSI are described. One system embodiment includes an MRI apparatus configured to produce a RE-TOSSI pulse sequence and to acquire T2-weighted images in response to the RE-TOSSI pulse sequence. An example RE-TOSSI pulse sequence includes a TOSSI portion and a non-inverting, non-TOSSI portion.
    Type: Application
    Filed: October 29, 2008
    Publication date: July 9, 2009
    Applicant: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Jamal J. Derakhshan, Mark A. Griswold, Jeffrey L. Duerk