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Symmetric Echo Acquisition for Absolute-Value Display in Solid-State NMR Imaging

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A method of solid-state NMR imaging that permits echo Fourier transformation (FT) has been devised using a magic echo train. The echo FT imaging can be implemented simply by modifying the gradient pulse sequence in the previous magic echo imaging (TREV-16TS) so that the one-dimensional k-space trajectory follows the sampling points which are symmetric about the k origin. The implemented ability of echo FT improves the performance of the magic echo imaging: the sensitivity gained by √2, the phase correction is made unnecessary, and the digital resolution is doubled. One- and two-dimensional imaging experiments have been conducted on some solid samples, confirming the improved performance and revealing a TREV-16TS adjustment parameter that is critical for the successful echo FT imaging.

Document Type: Research Article

Affiliations: Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan

Publication date: March 1, 2001

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