title: Quantitative (31)P spectroscopic imaging of human brain at 4 Tesla: assessment of gray and white matter differences of phosphocreatine and ATP.
abstract: This report describes the implementation and application of a multicompartment analysis of (31)P spectroscopic imaging data to determine the tissue-specific heterogeneities in metabolite content in the human brain and surrounding tissue. Using this information and a multicompartment regression analysis the phosphocreatine and ATP content of "pure" cerebral gray and white matter, the cerebellum, and skeletal muscle was determined in a group of 10 healthy volunteers. The data were converted to mM units using previously reported values for the T(1)s of phosphocreatine and ATP at 4 T, the water content of human brain, and an external reference for absolute quantification. The phosphocreatine concentration in cerebral gray and white matter, the cerebellum, and skeletal muscle was 3.53 +/- 0.33, 3.33 +/- 0.37, 3.75 +/- 0.66, and 25.8 +/- 2.3 mM, respectively. The ATP concentration in cerebral gray and white matter, the cerebellum, and skeletal muscle was 2.19 +/- 0.33, 3.41 +/- 0.33, 1.75 +/- 0.58, and 8.5 +/- 1.9 mM, respectively. Magn Reson Med 45:46-52, 2001.
authors.affiliation: Medical Department, Brookhaven National Laboratory, Upton, New York, USA. hhether@aecom.yu.edu
authors.forename: H P
authors.initials: HP
authors.lastname: Hetherington
authors.forename: D D
authors.initials: DD
authors.lastname: Spencer
authors.forename: J T
authors.initials: JT
authors.lastname: Vaughan
authors.forename: J W
authors.initials: JW
authors.lastname: Pan
mesh_terms: D000255:Adenosine Triphosphate / Q000032:analysis*; D000328:Adult; D001834:Body Water; D001923:Brain Chemistry; D002531:Cerebellum / Q000737:chemistry; D002540:Cerebral Cortex / Q000737:chemistry; D005260:Female; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000737:chemistry; D010725:Phosphocreatine / Q000032:analysis*
chemical_list: D010725:Phosphocreatine; D000255:Adenosine Triphosphate