Second-order phase correction of NMR spectra acquired using linear frequency-sweeps
NMR spectra acquired with experiments using frequency-sweeps such as the wide-band uniform-rate smooth truncation (WURST) spin-echo and Carr-Purcell-Meiboom-Gill (CPMG) sequences cannot be absorptively phased by using only conventional zeroth- and first-order phase correction. Implementation of phas...
| Main Authors: | , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado: |
KeAi Communications Co. Ltd.
2022-02-01
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| Series: | Magnetic Resonance Letters |
| Subjects: | |
| Acceso en liña: | http://www.sciencedirect.com/science/article/pii/S2772516221000267 |
| Summary: | NMR spectra acquired with experiments using frequency-sweeps such as the wide-band uniform-rate smooth truncation (WURST) spin-echo and Carr-Purcell-Meiboom-Gill (CPMG) sequences cannot be absorptively phased by using only conventional zeroth- and first-order phase correction. Implementation of phase correction up to the second-order is described for obtaining absorptive spectra, which have more desirable line shapes and noise properties than magnitude spectra. The relationship of the second-order phase to the parameters of frequency sweeps is derived. The second-order phasing in the frequency-domain is equivalent to a point spread in the time-domain signal. The application of second-order phase correction is demonstrated with a wideline 35Cl CPMG spikelet spectrum. |
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| ISSN: | 2772-5162 |