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a Samsung S-shearwave elastography assessed on the soleus of a child with CP. The yellow box (center) represents the shear wave measurement area. The ROI depth and the RMI (reliability measurement index) are expressed below. a The elasticity measurement (11.0 kPa) is not reliable given that the RMI is equal to 0.2. b The elasticity value (7.0 kPa) is reliable since RMI measures 0.7
