Shear wave elastography (SWE) is an emerging non-invasive medical imaging technique for estimating the shear wave velocity and characterizing the shear modulus of tissues. The main idea is that whether the tissue is hard or soft will give diagnostic information about the presence or status of diseases.
We are working on the shear wave elastography for human patellar tendon under tension. Changes of shear wave speed in human patellar tendon are a sign of abnormalities. A customized ultrasound shear wave elastography system using acoustic radiation force has been purposely built. It generates shear waves and captures the image data in high frame-rate in a cadaveric human patellar tendon at different tensile loads. We are working to further improve the technique and apply this to the clinic.