Self-refocused slice selection by magic echo DANTE with 270 degrees flipping Gaussian RF modulation

The method of slice selection proposed for solid-state MRI by combining DANTE selective excitation with magic echo (ME) line narrowing requires a rephasing period ca. 0.6 times the DANTE excitation period. The added rephasing period results in a significant loss of sensitivity due to transverse rela...

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Bibliographic Details
Published in:Journal of magnetic resonance (1997) 2010-04, Vol.203 (2), p.247-252
Main Authors: Masumoto, Hidefumi, Hashimoto, Takeyuki, Matsui, Shigeru
Format: Article
Language:English
Subjects:
Algorithms
Data Interpretation, Statistical
Magnetic Resonance Spectroscopy - methods
Normal Distribution
Online Access:Get full text
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Summary:The method of slice selection proposed for solid-state MRI by combining DANTE selective excitation with magic echo (ME) line narrowing requires a rephasing period ca. 0.6 times the DANTE excitation period. The added rephasing period results in a significant loss of sensitivity due to transverse relaxation. To solve the sensitivity problem, we make use of the self-refocusing effect of the 270 degrees Gaussian-shaped soft pulse by introducing a 270 degrees flipping Gaussian modulation to the ME DANTE method. This eliminates the rephasing period. The utility of the improved method is demonstrated by experiments performed on test samples of adamantane and polycarbonate.
ISSN:1096-0856
DOI:10.1016/j.jmr.2010.01.002