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Proceedings Paper

Non-uniform MR image reconstruction based on non-uniform FFT
Author(s): Xiao-yun Liang; Wei-ming Zeng; Zhi-hua Dong; Zhi-jiang Zhang; Li-min Luo
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Paper Abstract

A Non-Uniform Fast Fourier Transform (NUFFT) based method for non-Cartesian k-space data reconstruction is presented. For Cartesian K-space data, as we all know, image can be reconstructed using 2DFFT directly. But, as far as know, this method has not been universally accepted nowadays because of its inevitable disadvantages. On the contrary, non-Cartesian method is of the advantage over it, so we focused on the method usually. The most straightforward approach for the reconstruction of non-Cartesian data is directly via a Fourier summation. However, the computational complexity of the direct method is usually much greater than an approach that uses the efficient FFT. But the FFT requires that data be sampled on a uniform Cartesian grid in K-space, and a NUFFT based method is of much importance. Finally, experimental results which are compared with existing method are given.

Paper Details

Date Published: 11 January 2007
PDF: 9 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62793D (11 January 2007); doi: 10.1117/12.725329
Show Author Affiliations
Xiao-yun Liang, Shanghai Univ. (China)
Wei-ming Zeng, Johns Hopkins Univ. (United States)
Zhi-hua Dong, Shanghai Univ. (China)
Zhi-jiang Zhang, Shanghai Univ. (China)
Li-min Luo, Southeast Univ. (China)


Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics

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