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Lapucci, Caterina; Schiavi, Simona; Signori, Alessio; Sbragia, Elvira; Bommarito, Giulia; Cellerino, Maria; Uccelli, Antonio; Inglese, Matilde; Roccatagliata, Luca; Pardini, Matteo
European radiology experimental, 8/6, Letnik: 6, Številka: 1Journal Article
Background In multiple sclerosis, the correlation between white matter lesion volumes (LV) and expanded disability status scale (EDSS) is at best moderate, leading to the “clinico-radiological paradox”, influenced by many factors, including the lack of information on the spatial localisation of each lesion on synthetic metrics such as LV. We used a probabilistic approach to provide the volume of WM tracts that may be disconnected by lesions and to evaluate its correlation with EDSS. Methods Forty-five patients (aged 37.4 ± 6.8 years, mean ± standard deviation; 30 females; 29 relapsing-remitting, 16 progressive) underwent 3-T magnetic resonance imaging. Both LV and the volume of the tracts crossing the lesioned regions (disconnectome volume, DV) were calculated using BCBtoolkit and correlated with EDSS. Results T1-weighted LV and DV significantly correlated with EDSS ( p ≤ 0.006 r ≥ 0.413) as it was for T2-weighted LV and T2-weighted DV ( p ≤ 0.004 r ≥ 0.430), but only T1-weighetd and T2-weighted DVs were EDSS significant predictors ( p ≤ 0.001). The correlations of T1-weighted and T2-weighted LV with EDSS were significantly mediated by DV, while no effect of LV on the EDSS-DV correlation was observed. Conclusion The volume of disconnected WM bundles mediates the LV-EDSS correlation, representing the lonely EDSS predictor.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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