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Cross Polarization for1H NMR Image Contrast in Solids

✍ Scribed by Toshihito Nakai; Yasuhiro Fukunaga; Masayuki Nonaka; Shigeru Matsui; Tamon Inouye

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
159 KB
Volume
134
Category
Article
ISSN
1090-7807

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✦ Synopsis

A novel 1 H imaging method for solids, yielding images reflecting 1 H-13 C dipolar interactions through cross relaxation time T IS , is presented. Phase-alternating multiple-contact cross polarization (PAMC CP) was incorporated into the magic-echo frequencyencoding imaging scheme; the PAMC CP sequence may partly but efficiently destroy the initial 1 H magnetization depending on the T IS values. A theory describing the effects of the PAMC CP sequence was developed, which was used for the assessment of the sequence as well as the analysis for the experimental results. It was demonstrated that the T IS -weighted 1 H image and the T IS mapping for a phantom, constituted of adamantane and ferrocene, can distinguish these compounds clearly.

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