title: Noninvasive measurement of molar concentrations of 31P metabolites in vivo, using surface coil NMR spectroscopy.
abstract: The measurement of absolute concentration of 31P metabolites is described, using water 1H as an internal concentration standard. An analysis of the effect of variations in coil Q on flip angle and sensitivity is presented and verified experimentally. Concentrations of nucleoside triphosphate in rat brain and muscle have been measured.
authors.affiliation: Institute of Neurology, London, United Kingdom.
authors.forename: P S
authors.initials: PS
authors.lastname: Tofts
authors.forename: S
authors.initials: S
authors.lastname: Wray
mesh_terms: D000818:Animals; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D010758:Phosphorus / Q000032:analysis / Q000378:metabolism*; D051381:Rats; D014316:Tritium
chemical_list: D014316:Tritium; D010758:Phosphorus