The Utility of Shear-Wave Elastography in the Evaluation of Myositis

Shear‐wave elastography evaluation of thenar muscle in carpal tunnel syndrome

“…The further decrease in SWV in hands with more severe CTS may be due to muscle atrophy and fatty infiltration from long‐term neuropathy (Figure 4). Alfuraih et al 23 reported lower SWVs in inflammatory myositis muscle compared to the controls; it was contrary to the results of the other study group which also evaluated the SWV of inflammatory myositis 33 . This might be explained by the fact that the enrolled patients of Alfuraih et al 23 had relatively longer disease duration and had already been treated with immunosuppressive therapy.…”

“…Kolb et al reported that the SWV of inflammatory myopathy was increased compared to that of controls and proposed that these results reflect the intracellular and extracellular water content differences that affect the tissue strain. 33 The SWV of the thenar muscle in CTS hands is likely to be increased compared to control hands due to denervation edema CTS may be due to muscle atrophy and fatty infiltration from longterm neuropathy (Figure 4). Alfuraih et al 23 reported lower SWVs in inflammatory myositis muscle compared to the controls; it was contrary to the results of the other study group which also evaluated the SWV of inflammatory myositis.…”

“…Alfuraih et al 23 reported lower SWVs in inflammatory myositis muscle compared to the controls; it was contrary to the results of the other study group which also evaluated the SWV of inflammatory myositis. 33 This might be explained by the fact that the enrolled patients of Alfuraih et al 23 had relatively longer disease duration and had already been treated with immunosuppressive therapy. Based on these findings, a further longitudinal study should be conducted to determine the time at which SWV decreases in the thenar muscle and can be used as an indicator for surgery.…”

“…In this study, SWV in the thenar muscle of the CTS group was greater than that of the control group (2.83 vs. 2.41 m/s, p < 0.001). Kolb et al reported that the SWV of inflammatory myopathy was increased compared to that of controls and proposed that these results reflect the intracellular and extracellular water content differences that affect the tissue strain 33 . The SWV of the thenar muscle in CTS hands is likely to be increased compared to control hands due to denervation edema (i.e., increased intracellular and extracellular water content) observed in the innervated muscle after nerve damage.…”

Quantitative assessment of muscle properties in polymyositis and dermatomyositis using high-frequency ultrasound and shear wave elastography

“…This discrepancy might be related to the differences in elastography modalities and the limitations of strain elastography. Another study demonstrated that transverse-orientation SWE might serve as an imaging biomarker for myositis diagnosis by displaying increased SWV values and a heterogeneous pattern of inflamed muscles (33). Unlike previous studies, the study by Kolb et al (33) confirmed the value of transverse-orientation SWE in the diagnosis of myositis, but the limitation of their study was that the participants were not distinguished by the type of myositis and muscle.…”