Abstract
A novel multi-channel image reconstruction algorithm for parallel MRI is proposed to reconstruct a complex-valued image with both magnitude and phase information in a reduced computation time, so called the DRF-GRAPPA. The DRF-GRAPPA combines multichannel images by separately obtaining magnitude information and phase information. The method is applied to parallel MRI to reconstruct an image from under-sampled k-space data by using a direct reconstruction filter that can simultaneously estimate full k-space signals and combine multi-channel images. To obtain both magnitude and phase information, the DRF-GRAPPA provides two different direct reconstruction filters. The accuracy of the magnitude and phase information is validated through simulations. In addition, the experiment results of spherical water phantom imaging and in-vivo imaging demonstrate that the DRF-GRAPPA can successfully reconstruct images with both magnitude and phase information within a reduced reconstruction time.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
P. B. Roemer, W. A. Edelstein, C. E. Hayes, S. P. Souza and O. M. Muelle, Magn. Reson. Med. 16, 192 (1990).
K. P. Pruessmann, M. Weiger, M. B. Scheidegger and P. Boesiger, Magn. Reson. Med. 42, 952 (1999).
D. K. Sodickson and W. J. Manning, Magn. Reson. Med. 38, 591 (1997).
P. M. Jakob, M. A. Griswold, R. R. Edelman and D. K. Sodickson, Magn. Reson. Mater. Physics, Biol. Med. 7, 42 (1998).
M. A. Griswold, P. M. Jakob, R. M. Heidemann, M. Nittka, V. Jellus, J. Wang, B. Kiefer and A. Haase, Magn. Reson. Med. 47, 1202 (2002).
Z. Wang, J. Wang and J. A. Detre, Magn. Reson. Med. 54, 738 (2005).
T. Prock, D. J. Collins, A. S. K. Dzik-Jurasz and M. O. Leach, Phys. Med. Biol. 47, N39 (2002).
P. J. Beatty, S. Chang, J. H. Holmes, K. Wang, A. C. S. Brau, S. B. Reeder and J. H. Brittain, Magn. Reson. Med. 71, 2139 (2014).
D. O. Walsh, A. F. Gmitro and M. W. Marcellin, Magn. Reson. Med. 43, 682 (2000).
T. Zhang, J. M. Pauly, S. S. Vasanawala and M. Lustig, Magn. Reson. Med. 69, 571 (2013).
F. Huang, S. Vijayakumar, Y. Li, S. Hertel and G. R. Duensing, Magn. Reson. Imaging 26, 133 (2008).
P. Beatty, W. Sun and A. Brau, in Proceedings of the 2008 International Society for Magnetic Resonance in Medicine (Toronto, Canada, May 3–9, 2008), p. 8.
W. Chen, P. Hu and C. Meyer, in Proceedings of the 2008 International Society for Magnetic Resonance in Medicine (Toronto, Canada, May 3–9, 2008), p. 1296.
M. A. Ohliger and D. K. Sodickson, NMR Biomed. 19, 300 (2006).
S. Bauer, M. Markl, M. Honal and B. A. Jung, Magn. Reson. Med. 66, 402 (2011).
J. V. Hajnal, D. J. Larkman and D. J. Herlihy, in Proceedings of the 2000 International Society for Magnetic Resonance in Medicine (Colorado, U.S.A., April 3–7, 2000), p. 2000.
A. C. S. Brau, P. J. Beatty, S. Skare and R. Bammer. Magn. Reson. Med. 59, 382 (2008).
D. I. Hoult, Concepts Magn. Reson. 12, 173 (2000).
J. Wang, B. Zhang, K. Zhong and Y. Zhuo, in Proceedings of the 2005 International Society for Magnetic Resonance in Medicine (Florida, U.S.A., May 7–13, 2005), p. 2428.
D. S. Weller, J. R. Polimeni, L. Grady, L. L. Wald, E. Adalsteinsson and V. K. Goyal, IEEE Trans. Med. Imaging 32, 1325 (2013).
Author information
Authors and Affiliations
Corresponding authors
Rights and permissions
About this article
Cite this article
Kim, D., Jung, S. & Park, H. DRF-GRAPPA: A Parallel MRI Method with a Direct Reconstruction Filter. J. Korean Phys. Soc. 73, 130–137 (2018). https://doi.org/10.3938/jkps.73.130
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3938/jkps.73.130