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Tuesday, December 19, 2017

Black Hole Assessment Method in Multiple Sclerosis

Mult Scler Relat Disord; ePub 2017 Dec 2; Adusumilli, et al
December 19, 2017


A method designed to classify and estimate the severity of T1-weighted hypointensities (persistent black and gray holes) within multiple sclerosis (MS) can add information to conventional imaging, a recent study found. 38 MS patients contributed images to the study. Intensities of lesions on T1-weighted scans were assessed relative to cerebrospinal fluid intensity using commercial software. Magnetization transfer imaging, diffusion tensor imaging, and clinical testing were performed to assess associations with T1w intensity-based measures. Researchers found:
  • Intensity-based assessments of T1w hypointensities were reproducible and achieved >90% concordance with expert rater determinations of “black” and “gray” holes.
  • Intensity ratio values correlated with magnetization transfer ratios (R=0.473) and diffusion tensor imaging metrics (R values ranging from 0.283 to −0.531) that have been associated with demyelination and axon loss.
  • Intensity ratio values incorporated into T1w hypointensity volumes correlated with clinical measures of cognition.
Citation:
Adusumilli G, Trinkaus K, Sun P, et al. Intensity ratio to improve black hole assessment in multiple sclerosis. [Published online ahead of print December 2, 2017]. Mult Scler Relat Disord. doi:10.1016/j.msard.2017.11.020.
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