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자료유형
학술저널
저자정보
저널정보
대한신경과학회 Journal of Clinical Neurology Journal of Clinical Neurology 제10권 제3호
발행연도
2014.1
수록면
197 - 202 (6page)

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Background and Purpose Previous T2 relaxometry studies have provided evidence for regional brain iron deficiency in patients with restless legs syndrome (RLS). Measurement of theiron content in several brain regions, and in particular the substantia nigra (SN), in early- andlate-onset RLS patients using T2 relaxometry have yielded inconsistent results. In this study theregional iron content was assessed in patients with early- and late-onset RLS using magneticresonance imaging (MRI), and compared the results with those in controls. Methods Thirty-seven patients with idiopathic RLS (20 with early onset and 17 with late onset) and 40 control subjects were studied using a 3.0-tesla MRI with a gradient-echo samplingof free induction decay and echo pulse sequence. The regions of interest in the brain were measured independently by two trained analysts using software known as medical image processing, analysis, and visualization. The results were compared and a correlation analysis was conducted to investigate which brain areas were related to RLS clinical variables. Results The iron index in the SN was significantly lower in patients with late-onset RLS thanin controls (p=0.034), while in patients with early-onset RLS there was no significant difference. There was no significant correlation between the SN iron index of the late-onset RLS groupand clinical variables such as disease severity. Conclusions Late-onset RLS is associated with decreased iron content in the SN. This finding supports the hypothesis that regional brain iron deficiency plays a role in the pathophysiology of late-onset RLS

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