Revised motion estimation algorithm for PROPELLER MRI.

  title={Revised motion estimation algorithm for PROPELLER MRI.},
  author={James G. Pipe and Wende N Gibbs and Zhiqiang Li and J P Karis and Michael Schar and Nicholas Ryan Zwart},
  journal={Magnetic resonance in medicine},
  volume={72 2},
PURPOSE To introduce a new algorithm for estimating data shifts (used for both rotation and translation estimates) for motion-corrected PROPELLER MRI. The method estimates shifts for all blades jointly, emphasizing blade-pair correlations that are both strong and more robust to noise. THEORY AND METHODS The heads of three volunteers were scanned using a PROPELLER acquisition while they exhibited various amounts of motion. All data were reconstructed twice, using motion estimates from the… CONTINUE READING


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