Patents Examined by Dixomare Vargas
  • Method for reconstructing an image of a subject from image data obtained by magnetic resonance
    Patent number: 6400153
    Abstract: Respective MR signals from a subject are received by at leasttwo MR antennas. The received MR signals have a phase angle relative to one another. The phase relations are determined from a correlation of the received MR signals. The MR signals are added as phase-corrected signals to form a sum signal. The sum signal is then used for further image reconstruction of the subject.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: June 4, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventor: Oliver Heid
  • MRI measurement of blood vessel wall compliance
    Patent number: 6288541
    Abstract: An MRI system repeatedly performs a pulse sequence during a time interval &Dgr;T in which a surge of blood flows through a vessel whose compliance is to be measured. Two spaced-apart slices are simultaneously excited by each pulse sequence and the transverse magnetization is flow-encoded before an NMR signal is acquired in the presence of a readout gradient pulse. The change in phase of the NMR signal is used to detect when the wave arrives at each slice location, and from this information blood vessel compliance may be calculated.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: September 11, 2001
    Assignee: General Electric Company
    Inventor: Charles Lucian Dumoulin