Patents Assigned to Case Westem Reserve University
  • Publication number: 20050033153
    Abstract: Spiral imaging has recently gained acceptance for rapid MR data acquisition. One of the main disadvantages of spiral imaging, however, is blurring artifacts due to off-resonance effects. Dixon techniques have been developed as methods of water-fat signal decomposition in rectilinear sampling schemes, and they can produce unequivocal water-fat signal decomposition even in the presence of B0 inhomogeneity. Three-point and two-point Dixon techniques can be extended to conventional spiral and variable-density spiral data acquisitions for unambiguous water-fat decomposition with off-resonance blurring correction. In the spiral three-point Dixon technique, water-fat signal decomposition and image deblurring are performed based on the frequency maps that are directly derived from the acquired images. In the spiral two-point Dixon technique, several predetermined frequencies are tested to create a frequency map.
    Type: Application
    Filed: April 26, 2004
    Publication date: February 10, 2005
    Applicant: Case Westem Reserve University
    Inventors: Hisamoto Moriguchi, Jonathan Lewin, Jeffrey Duerk