Abstract #2424
Highly Accelerated 3D Parallel Imaging with Transitional Auto-calibration (3D-PITA)
Ren He 1 , Jingyuan Lyu 1 , and Leslie Ying 2
1
Department of Electrical Engineering,
University at Buffalo, Buffalo, NY, United States,
2
Department
of Electrical Engineering, Department of Biomedical
Engineering, University at Buffalo, Buffalo, NY, United
States
A novel 3D-PITA method is proposed for volumetric
auto-calibrated parallel imaging. The method introduces
a transition region between the ACS region and the
highly reduced outer region [3], where the sampling
pattern is specially designed to have a lower reduction
factor than the outer region. We then perform a two-step
calibration/reconstruction, one step with nonlinear
GRAPPA and the other with GRAPPA, to obtain the final
full k-space data. Experimental results demonstrate the
proposed method is able to achieve high reconstruction
quality at reduction factors higher than 5 and is
superior to the conventional 3D GRAPPA.
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