Volume 14, Issue 5 (September & October 2023)                   BCN 2023, 14(5): 675-686 | Back to browse issues page

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Fatehi F, Khaghani P, Okhovat A A, Moradi K, Teimouri F, Mortaja M, et al . Investigating the Association Between Muscular Ultrasonographic Alterations and Clinical Symptoms in Patients With Inflammatory Myopathy. BCN 2023; 14 (5) :675-686
URL: http://bcn.iums.ac.ir/article-1-2229-en.html
1- Neuromuscular Research Center, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Introduction: Muscle biopsy is commonly used to diagnose inflammatory myopathies. We evaluated the ability of muscle ultrasound, a non-invasive and simple tool, to distinguish between healthy subjects and patients with inflammatory myopathy.
Methods: This study was conducted on 17 patients recently diagnosed with biopsy inflammatory myopathies (12 dermatomyositis, 5 polymyositis) compared with 17 age- and gender-matched healthy control adults. All patients underwent clinical assessments, including manual muscle testing, hand-held dynamometry, and muscle ultrasound evaluations, including thickness and echo intensity in predefined muscle groups. 
Results: The disease duration was seven months (interquartile range: 3 to 11 months). Except for the biceps and gastrocnemius, patients’ muscles had significantly higher echo intensity and lower thickness than the control group. The echo intensity sum-score manifested the highest area under the curve compared to the sum-scores of other variables (echo intensity vs manual muscle testing: Area under curves-difference=0.18, P<0.01; echo intensity vs dynamometry: Area under curves-difference=0.14, P=0.02; echo intensity vs thickness: Area under curves-differences-difference=0.25, P<0.01). 
Conclusion: The echo intensity of muscles differed significantly between healthy individuals and patients with inflammatory myopathies and may serve as a useful diagnostic biomarker. 
Type of Study: Original | Subject: Clinical Neuroscience
Received: 2021/07/14 | Accepted: 2023/06/20 | Published: 2023/09/1

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