Muscle ultrasound: Present state and future opportunities

Muscle ultrasound serves as a valuable screening tool for the detection of neuromuscular disease. It can identify pathological alterations in affected muscles, such as the replacement of healthy tissue with fatty deposits and the development of fibrosis. A recent publication in the Muscle & Nerve Journal highlights the effectiveness of quantified muscle ultrasound in providing highly sensitive results.
The utilization of muscle ultrasound in the assessment of neuromuscular disease is based on the fundamental concept that diseased muscles exhibit changes in their texture and tissue structure as a consequence of degeneration and the subsequent infiltration of fibrotic and fatty tissue. Distinct tissue types result in an increased number of ultrasound reflections, leading to a progressively brighter appearance in the generated images. In the case of inflammatory myopathies, specific alterations can be observed in muscle ultrasound images. In conditions such as dermatomyositis and polymyositis, abnormalities typically manifest as localized areas of heightened echogenicity. A comprehensive visual analysis of muscle ultrasound images offers valuable insights into the overall echogenicity, texture, and anatomical context of the muscles under examination. By comparing them with the subcutaneous fat layer as a reference point, it becomes relatively straightforward to identify clearly abnormal muscles. For further information on interpreting the visual assessment of muscle texture, please refer to the provided link.