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THROUGH-TIME RADIAL GRAPPA CALIBRATION

  • US 20110093233A1
  • Filed: 10/21/2009
  • Published: 04/21/2011
  • Est. Priority Date: 10/21/2009
  • Status: Abandoned Application
First Claim
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1. A method, comprising:

  • controlling a parallel magnetic resonance imaging (pMRI) apparatus to acquire, from an object to be imaged, throughout a period of time, two or more radial calibration data sets, where the two or more radial calibration data sets are acquired at different points in time;

    controlling the pMRI apparatus to acquire an under-sampled radial data set from the object to be imaged;

    controlling the pMRI apparatus to perform a through-time radial GRAPPA calibration comprising computing a GRAPPA weight set from data in the two or more radial calibration data sets; and

    controlling the pMRI apparatus to reconstruct an image of the object to be imaged from the under-sampled radial data set where a value for a point missing from k-space in the under-sampled radial data set is computed using the GRAPPA weight set as calibrated and applied for the missing point.

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