Background: Transcranial sonography may be applied to assess the basal ganglia nuclei and brain atrophy by the measurement of the width of the third ventricle. The aim of this study was to assess usefulness of transcranial sonography (TCS) in patients with multiple sclerosis (MS) by examining the echogenicity of subcortical structures and the width of the third ventricle.
Method: Transcranial sonography evaluation of substantia nigra, brain stem raphe nuclei, diameter of the third ventricle, width of the anterior horn of the lateral ventricle, thalamus, lenticular nucleus, and head of the caudate nucleus in 41 patients with relapsing-remitting MS (RRMS), 23 with secondary progressive MS (SPMS), and 20 healthy controls was compared. A potential link between the patients' age, sex, Expanded Disability Status Scale (EDSS) score, relapse index, and ultrasound parameters was assessed.
Results: The following were found in patients with MS, as compared to the control group: a greater area of the substantia nigra, a longer diameter of the third ventricle and wider frontal horns of the lateral ventricles, hypo-echogenicity of the brain stem raphe, and hyperechogenicity of the lenticular nucleus. The study group was found to have a significant correlation between the area of the substantia nigra, and the age of patients, the duration of the illness, EDSS score, and the number of relapses. There was a significant correlation between the diameter of the third ventricle and the age of patients and EDSS score.
Conclusions: Patients with MS reveal ultrasound features of subcortical structure atrophy. Selected TCS findings show a correlation with disease progression and activity.
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