Proton decoupled 13C NMR imaging |
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Authors: | B E Hammer |
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Institution: | Intermagnetics General Corporation, Guilderland, NY 12084. |
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Abstract: | Proton decoupled 13C images were obtained at 2.1 Tesla. 13C1H] images showed an increase in sensitivity over nondecoupled 13C images because of the nuclear Overhauser effect and elimination of multiple lines from scalar 13C-1H spin-spin couplings. The improvement in S/N for 13C1H] images was smaller than expected because of a significant decrease in decoupling efficiency when 13C spin echoes were acquired in a readout gradient. Images of 13C compounds that had a wide range of chemical shifts showed separated and/or overlapping images, which is consistent with chemical shift imaging artifacts seen in 1H images. This work examines the technical constraints of acquiring and the difficulties of interpreting 13C1H] images. |
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