On the complementarity of SENSE and GRAPPA in parallel MR Imaging

W. S. Hoge, Dana H. Brooks
Proceedings of 28th Intl Conf of IEEE EMBS (EMBC-06)
Pages 755-758
Sep, 2006

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Abstract

Two image reconstruction methods currently dominate parallel MR imaging: SENSE and GRAPPA. While both seek to reconstruct images from subsampled multi-channel MRI data, there exist fundamental differences between the two. In particular, SENSE reconstructs an image of the excited spin-density directly whereas GRAPPA reconstructs estimates of the fully sampled raw coil data and then combines them to obtain an image. In this work we show that these differences can be exploited such that each method can compliment the other. In the case of SENSE, which requires an estimate of the coil sensitivity map before reconstruction, one can use GRAPPA to improve the coil sensitivity estimates. Alternatively, using coil sensitivity estimates and the SENSE reconstruction equations, one can improve the GRAPPA reconstruction parameter estimation. Together, these approaches can provide higher image quality than either method alone.

Reference

Hoge WS, Brooks DH. On the complementarity of SENSE and GRAPPA in parallel MR imaging. In Proceedings of 28th Intl Conf of IEEE EMBS (EMBC-06). New York, NY, USA, 2006;755-758.

Bibtex entry

@inProceedings{hogeEMBC06,
  title          = {On the complementarity of {SENSE} and {GRAPPA} in parallel 
                   {MR} Imaging},                                              
  author         = {Hoge, W Scott and Brooks, Dana H},                         
  booktitle      = {Proceedings of 28th Intl Conf of IEEE EMBS (EMBC-06)},     
  month          = {Sep},                                                      
  year           = {2006},                                                     
  pages          = {755-758},                                                  
  address        = {New York, NY, USA}
}

Grants

NIH U41-RR019703

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