Characterization of Enhancing MS Lesions by Dynamic Texture Parameter Analysis of Dynamic Susceptibility Perfusion Imaging

Figure 1

Prestratification of demyelinating lesions according to their leakiness. The upper row shows an enhancing lesion classified as EL+ (arrow), (a) T1w post-Gd after postprocessing with NORDIC Ice: the red area reflects the lesion with high permeability above the predefined cutoff value of 0.01; (b) T1w post-Gd; (c) FLAIR sequence; (d) T1w pre-Gd. The lower row shows an enhancing lesion classified as EL− (arrowhead); (e) T1w post-Gd, after postprocessing with NORDIC Ice: the lesion was classified as low permeability lesion below the predefined cutoff value of 0.01; (f) T1w post-Gd; (g) FLAIR sequence; (h) T1w pre-Gd.