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In vivo localized1H-spectroscopy with spin echos and stimulated echos: A quantitative comparison

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Abstract

Stimulated echos (STE) are frequently used for localization inin vivo spectroscopy. However, in theory the signal is reduced by a factor of 2 compared to spin echos. We have compared the STEAM technique and a method utilizing a double spin echo (DSE) for localization. Projections and spectra of phantoms and the human brain have been measured with a 4 T whole body system. Both methods provide a reliable localization in one scan. The spectra obtained with both techniques are similar, with one significant exception: the DSE signal strength is stronger than that of STEAM by a factor of about 1.9. The advantages and disadvantages of both methods with respect to RF- power, gradient strength, and spectral editing will be discussed.

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Authors and Affiliations

  1. Siemens AG, Medical Engineering Group, Henkestr. 127, D 8520, Erlangen, FRG

    D. Hentschel & R. Ladebeck

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  1. D. Hentschel
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  2. R. Ladebeck
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Hentschel, D., Ladebeck, R. In vivo localized1H-spectroscopy with spin echos and stimulated echos: A quantitative comparison. Appl Magn Reson 1, 41–46 (1990). https://doi.org/10.1007/BF03166007

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  • DOI: https://doi.org/10.1007/BF03166007

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