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- W2043903444 abstract "In vivo proton magnetic resonance spectroscopy (MRS) may be used to quantify brainstem neuronal degeneration in ALS because of the neuronal localization of N-acetylaspartate and N-acetylaspartylglutamate, together termed NA, which are estimated with this technique. We measured the ratio of NA to creatine/phosphocreatine (NA/Cr) with proton MRS at 3.0 tesla (T) in a 4.3-cm3 volume in the pons and upper medulla of 12 ALS patients and 17 age-matched control subjects. Brainstem NA/Cr was reduced in ALS versus control subjects (mean +/- SD: 1.57 +/- 0.20 versus 1.95 +/- 0.14; p < 0.0001). Patients with severe spasticity or prominent bulbar weakness had the lowest NA/Cr ratios; those with predominantly lower motor neuron limb weakness had near-normal ratios. We conclude that proton MRS may quantify region-specific neuronal dysfunction in ALS." @default.
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- W2043903444 date "1998-01-01" @default.
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- W2043903444 title "Estimation of brainstem neuronal loss in amyotrophic lateral sclerosis with in vivo proton magnetic resonance spectroscopy" @default.
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- W2043903444 doi "https://doi.org/10.1212/wnl.50.1.72" @default.
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