Analysis of the human brain in primary progressive multiple sclerosis with mapping of the spatial distributions using H-1 MR spectroscopy and diffusion tensor imaging

PE Sijens*, R Irwan, JH Potze, JP Mostert, J De Keyser, M Oudkerk

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    24 Citaten (Scopus)

    Samenvatting

    Primary progressive multiple sclerosis (ppMS; n=4) patients and controls (n=4) were examined by 1H magnetic resonance spectroscopy (MRS) and diffusion tensor imaging (DTI) in order to map choline (Cho), creatine and N-acetylaspartate (NAA), the fractional anisotropy (FA) and the apparent diffusion constant (ADC). After chemical shift imaging (point-resolved spectroscopy, repetition time/echo time 1,500 ms/135 ms) of a supraventricular volume of interest of 8x8x2 cm(3) (64 voxels) MRS peak areas were matched to the results of DTI for the corresponding volume elements. Mean FA and NAA values were reduced in the ppMS patients (P <0.01, both) and the ADC increased (P <0.02). The spatial distribution of NAA showed strong correlation to ADC in both ppMS patients and controls (r =-0.74 and r= -0.70; P <0.00001, both), and weaker correlations to FA (r=0.49 and r=0.41; P <0.00001, all). FA and ADC also correlated significantly with Cho in patients and controls (P <0.00001, all). The relationship of Cho and NAA to the ADC and the FA and thus to the content of neuronal structures suggests that these metabolite signals essentially originate from axons (NAA) and the myelin sheath (Cho). This is of interest in view of previous reports in which Cho increases were associated with demyelination and the subsequent breakdown of neurons.

    Originele taal-2English
    Pagina's (van-tot)1686-1693
    Aantal pagina's8
    TijdschriftEuropean Radiology
    Volume15
    Nummer van het tijdschrift8
    DOI's
    StatusPublished - aug.-2005

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