Abstract：
BACKGROUND AND PURPOSE:Using transcranial B-mode sonography (TCS), the first morphological marker for restless legs syndrome (RLS), hypoechogenicity of the substantia nigra (SN) has been found. The aim of this study was to validate SN hypoechogenicity as a morphological marker for RLS in a large patient cohort and to investigate further RLS-associated brain abnormalities using TCS. METHODS:One hundred forty-three RLS patients (37 with symptomatic RLS) and 45 controls, matched for age and gender, underwent TCS by an experienced and independent rater who was blinded to clinical data. RESULTS:The basal ganglia, ventricular system and cerebral lobes showed no RLS-specific abnormalities. SN hypoechogenicity correlated with a family history of RLS (p<0.001) and showed good sensitivity (82%), specificity (83%) and positive predictive value (94%). Red nucleus hyperechogenicity and brainstem raphe (BR) hypoechogenicity were more prevalent in RLS than in controls (both p<0.001) and correlated with reported periodic limb movements and depression, respectively (both p<0.001). Seventy-six percent of the patients (7% of controls) showed a co-occurrence of two or more sonographical abnormalities; 60% of symptomatic RLS patients showed the same sonographic features as the majority of RLS patients. CONCLUSIONS:TCS is a useful additional tool for diagnosing RLS and RLS-related disorders that demonstrate various brainstem abnormalities.
journal_name
Sleep Medjournal_title
Sleep medicineauthors
Godau J,Wevers AK,Gaenslen A,Di Santo A,Liepelt I,Gasser T,Berg Ddoi
10.1016/j.sleep.2007.09.001subject
Has Abstractpub_date
2008-10-01 00:00:00pages
782-9issue
7eissn
1389-9457issn
1878-5506pii
S1389-9457(07)00317-6journal_volume
9pub_type
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