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  Improved temporal resolution in cardiac imaging using through-time spiral GRAPPA

Seiberlich, N., Lee, G., Ehses, P., Duerk, J., Gilkeson, R., & Griswold, M. (2011). Improved temporal resolution in cardiac imaging using through-time spiral GRAPPA. Magnetic Resonance in Medicine, 66(6), 1682-1688. doi:10.1002/mrm.22952.

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Seiberlich, N, Author
Lee, G, Author
Ehses, P1, Author              
Duerk, JL, Author
Gilkeson, R, Author
Griswold, MA, Author
Affiliations:
1Research Center Magnetic Resonance Bavaria (MRB), Würzburg, Germany, ou_persistent22              

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 Abstract: Previous work has shown that the use of radial GRAPPA for the reconstruction of undersampled real-time free-breathing cardiac data allows for frame rates of up to 30 images/s. It is well known that the spiral trajectory offers a higher scan efficiency compared to radial trajectories. For this reason, we have developed a novel through-time spiral GRAPPA method and demonstrate its application to real-time cardiac imaging. By moving from the radial trajectory to the spiral trajectory, the temporal resolution can be further improved at lower acceleration factors compared to radial GRAPPA. In addition, the image quality is improved compared to those generated using the radial trajectory due to the lower acceleration factor. Here, we show that 2D frame rates of up to 56 images/s can be achieved using this parallel imaging method with the spiral trajectory.

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 Dates: 2011-12
 Publication Status: Published in print
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 Identifiers: DOI: 10.1002/mrm.22952
BibTex Citekey: SeiberlichLEDGG2011
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Title: Magnetic Resonance in Medicine
Source Genre: Journal
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Publ. Info: New York : Wiley-Liss
Pages: - Volume / Issue: 66 (6) Sequence Number: - Start / End Page: 1682 - 1688 Identifier: ISSN: 0740-3194
CoNE: https://pure.mpg.de/cone/journals/resource/954925538149