Abstract
We perform Proton Magnetic Resonance Spectroscopy (MRS) without water suppression in contrast to traditional water-suppressed MRS. The preserved water signal can be used as a reference for the absolute quantification of metabolites, reducing the total measurement time. However, the non-water-suppressed spectra can be contaminated by gradient-induced frequency modulations resulting in sidebands in the spectrum. Sidebands may obscure the metabolite resonances of interest, thereby rendering the spectral analysis and quantification problematic. To this end, we present a correction technique to remove sidebands. The proposed method utilizes the phase of an external reference of single resonance to observe the time-varying the static field fluctuation induced by gradient-vibrations then deconvolves this phase contamination from the desired signal obtained under the same experimental conditions. The method is evaluated by phantom and in vivo measurements.
Original language | English |
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Title of host publication | 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1008-1011 |
Number of pages | 4 |
ISBN (Print) | 1424406722, 9781424406722 |
DOIs | |
Publication status | Published - 2007 |
Externally published | Yes |
Event | 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro; ISBI'07 - Arlington, VA, United States Duration: 12 Apr 2007 → 15 Apr 2007 |
Other
Other | 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro; ISBI'07 |
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Country/Territory | United States |
City | Arlington, VA |
Period | 12/04/07 → 15/04/07 |
Keywords
- Absolute quantification
- Magnetic resonance spectroscopy
- Sidebands
- Water suppression