title: In vivo 23Na NMR studies of myotonic dystrophy.
abstract: Myotonic dystrophy is an inherited multi-system disease. Its pathophysiology leading to muscle malfunction and damage is not well understood. 23Na NMR spectroscopy was applied here for an in vivo comparative study of the calf muscles of 7 myotonic dystrophy patients at various stages of the disease and 11 healthy volunteers. Both the total sodium content, expressed as the ratio of the 23Na and 1H water signals, and the fast transverse relaxation time, T2f, determined from the triple quantum-filtered spectra, increased in correlation with the severity of the disease. The results demonstrate that 23Na NMR enables the quantitation of myotonic dystrophy progression.
authors.affiliation: Diagnostic Imaging Department, MRI Institute, The Chaim Sheba Medical Center, Tel Hashomer, Israel.
authors.forename: T
authors.initials: T
authors.lastname: Kushnir
authors.forename: T
authors.initials: T
authors.lastname: Knubovets
authors.forename: Y
authors.initials: Y
authors.lastname: Itzchak
authors.forename: U
authors.initials: U
authors.lastname: Eliav
authors.forename: M
authors.initials: M
authors.lastname: Sadeh
authors.forename: L
authors.initials: L
authors.lastname: Rapoport
authors.forename: E
authors.initials: E
authors.lastname: Kott
authors.forename: G
authors.initials: G
authors.lastname: Navon
mesh_terms: D000293:Adolescent; D000328:Adult; D001834:Body Water; D018450:Disease Progression; D005260:Female; D006801:Humans; D006859:Hydrogen / Q000032:analysis; D007089:Image Enhancement; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000378:metabolism / Q000503:physiopathology; D009223:Myotonic Dystrophy / Q000175:diagnosis* / Q000378:metabolism / Q000503:physiopathology; D012964:Sodium / Q000032:analysis
chemical_list: D006859:Hydrogen; D012964:Sodium