Ultrasound Elastography Muscle Stiffness Evaluation
Using the same transducer and strain elastography feature of the ACUSON S 2000 USG machine real-time two-dimensional (2D) elastography images were obtained at rest and in closed mouth position by the same radiologist. Muscle stiffness was measured with SWE which provides a semitransparent color-coded image displaying the shear wave velocity (m/sec) from ten different points of the masseter muscle and the average of the ten measurements was taken and analyzed.