Proton decoupled 13C NMR imaging

Bruce E. Hammer

doi:10.1016/0730-725X(89)90710-8

Proton decoupled ¹³C NMR imaging

Bruce E. Hammer

Radiology

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Proton decoupled ¹³C images were obtained at 2.1 Tesla. ¹³C{¹H} images showed an increase in sensitivity over nondecoupled ¹³C images because of the nuclear Overhauser effect and elimination of multiple lines from scalar ¹³C¹H spin-spin couplings. The improvement in S N for ¹³C{¹H} 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 ¹³C{¹H} images.

Original language	English (US)
Pages (from-to)	235-240
Number of pages	6
Journal	Magnetic Resonance Imaging
Volume	7
Issue number	2
DOIs	https://doi.org/10.1016/0730-725X(89)90710-8
State	Published - 1989

Keywords

C NMR
Decoupling
Imaging

Publisher link

10.1016/0730-725X(89)90710-8

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title = "Proton decoupled 13C NMR imaging",

abstract = "Proton decoupled 13C images were obtained at 2.1 Tesla. 13C{1H} images showed an increase in sensitivity over nondecoupled 13C images because of the nuclear Overhauser effect and elimination of multiple lines from scalar 13C1H spin-spin couplings. The improvement in S N for 13C{1H} 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 13C{1H} images.",

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N2 - Proton decoupled 13C images were obtained at 2.1 Tesla. 13C{1H} images showed an increase in sensitivity over nondecoupled 13C images because of the nuclear Overhauser effect and elimination of multiple lines from scalar 13C1H spin-spin couplings. The improvement in S N for 13C{1H} 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 13C{1H} images.

AB - Proton decoupled 13C images were obtained at 2.1 Tesla. 13C{1H} images showed an increase in sensitivity over nondecoupled 13C images because of the nuclear Overhauser effect and elimination of multiple lines from scalar 13C1H spin-spin couplings. The improvement in S N for 13C{1H} 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 13C{1H} images.

KW - C NMR

KW - Decoupling

KW - Imaging

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