Single-shot GRASE imaging with short effective TEs

Johnson, G., Feinberg, D. A. and Venkataraman, V. (1996) Single-shot GRASE imaging with short effective TEs. Journal of Magnetic Resonance Imaging, 6 (6). pp. 944-947. ISSN 1053-1807

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A new phase-encoding scheme for gradient- and spin-echo (GRASE) imaging giving a short effective TE is described. Unlike previous orders, phase encoding is centric rather than sequential. The sequence is a development of k-banded GRASE that uses different time segments of the echo train to encode different bands of k space. This phase-encoding order has been implemented in single-shot sequences on an imager with high performance gradients. Approximately 144 phase-encoding lines can be acquired in an echo train time of 390 ms. With centric phase encoding, the effective TE is 8 ms, compared with 75 ms for sequential encoding, and signal-to-noise ratios (SNRs) in brain tissue are 50 to 70% higher. The sequence can be employed in, for example, diffusion and velocity imaging.

Item Type: Article
Uncontrolled Keywords: grase,rapid imaging,functional imaging
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
Depositing User: Pure Connector
Date Deposited: 05 Oct 2015 14:49
Last Modified: 21 Oct 2022 01:17

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