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Three‐dimensional high‐resolution magnetic resonance spectroscopic imaging for absolute quantification of ^31^P metabolites in human liver by M. Chmelík; A. I. Schmid; S. Gruber; J. Szendroedi; M. Krššák; S. Trattnig; E. Moser; M. Roden is a Medicine article available to read on EtoBox.
What is Three‐dimensional high‐resolution magnetic resonance spectroscopic imaging for absolute quantification of ^31^P metabolites in human liver about?
## Abstract Liver dysfunction correlates with alterations of intracellular concentrations of ^31^P metabolites. Localization and absolute quantification should help to trace regional hepatic metabolism. An improved protocol for the absolute quantification of ^31^P metabolites in vivo in human liver was developed by employing three‐dimensional (3D) __k__‐space weighted spectroscopic imaging (MRSI) with __B__~1~‐insensitive adiabatic excitation. The protocol allowed for high spatial resolution of 17.8 ± 0.22 cm^3^ in 34 min at 3 T. No pulse adjustment prior to MRSI measurement was necessary due to adiabatic excitation. The protocol geometry was identical for all measurements so that one calibration data set, acquired from phantom replacement measurement, was applied for all quantifications. The protocol was tested in 10 young, healthy volunteers, for whom 57 ± 7 spectra were quantified. Concentrations per liter of liver volume (reproducibilities) were 2.24 ± 0.10 mmol/L (1.8%) for phosphomonoesters (PME), 1.37 ± 0.07 mmol/L (7.9%) for inorganic phosphate (Pi), 11.40 ± 0.96 mmol/L (2.9%) for phosphodiesters (PDE), and 2.14 ± 0.10 mmol/L (1.6%) for adenosine triphosphate (ATP), respect
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- Author
- M. Chmelík; A. I. Schmid; S. Gruber; J. Szendroedi; M. Krššák; S. Trattnig; E. Moser; M. Roden
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0740-3194)
- Published
- 2008
- Language
- EN
- Field
- Medicine (Health Sciences)