Accelerated volumetric MRI with a SENSE/GRAPPA combination
M Blaimer, FA Breuer, N Seiberlich… - Journal of Magnetic …, 2006 - Wiley Online Library
M Blaimer, FA Breuer, N Seiberlich, MF Mueller, RM Heidemann, V Jellus, G Wiggins…
Journal of Magnetic Resonance Imaging: An Official Journal of the …, 2006•Wiley Online LibraryPurpose To combine the specific advantages of the generalized autocalibrating partially
parallel acquisitions (GRAPPA) technique and sensitivity encoding (SENSE) with two‐
dimensional (2D) undersampling. Materials and Methods By splitting the 2D reconstruction
process into multiple one‐dimensional (1D) reconstructions, the normal 1D GRAPPA
method can be used for image reconstruction. Due to this data‐handling process, a
GRAPPA reconstruction is performed along the phase‐encoding (PE) direction and …
parallel acquisitions (GRAPPA) technique and sensitivity encoding (SENSE) with two‐
dimensional (2D) undersampling. Materials and Methods By splitting the 2D reconstruction
process into multiple one‐dimensional (1D) reconstructions, the normal 1D GRAPPA
method can be used for image reconstruction. Due to this data‐handling process, a
GRAPPA reconstruction is performed along the phase‐encoding (PE) direction and …
Purpose
To combine the specific advantages of the generalized autocalibrating partially parallel acquisitions (GRAPPA) technique and sensitivity encoding (SENSE) with two‐dimensional (2D) undersampling.
Materials and Methods
By splitting the 2D reconstruction process into multiple one‐dimensional (1D) reconstructions, the normal 1D GRAPPA method can be used for image reconstruction. Due to this data‐handling process, a GRAPPA reconstruction is performed along the phase‐encoding (PE) direction and effectively a SENSE reconstruction is performed along the partition‐encoding (PAE) direction.
Results
In vivo experiments demonstrate the successful implementation of the SENSE/GRAPPA combination. Experimental results with up to 9.6‐fold acceleration using a prototype 32‐channel receiver head coil array are presented.
Conclusion
The proposed SENSE/GRAPPA combination for 3D imaging allows the GRAPPA method to be applied in combination with 2D undersampling. Because the SENSE/GRAPPA combination is not based on knowledge of spatial coil sensitivities, it should be the method of choice whenever it is difficult to extract the sensitivity information. J. Magn. Reson. Imaging 2006. © 2006 Wiley‐Liss, Inc.
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