Elastography is an ultrasound technique used to assess stiffness of tissues in the body. It has established applications in detecting chronic liver disease, and improving diagnostic accuracy in breast and prostate cancers. Pancreatic elastography is now able to be performed during a standard EUS examination using the existing equipment (in a similar manner to Doppler). Tissue elasticity is measured and represented with different colours (on a scale of 1 to 255). The colour signal (red-green-blue) is then superimposed on the conventional grey-scale image. Areas of increased stiffness are marked with dark blue, intermediate areas with green and soft tissue areas with red. Areas of interest are able to be marked to give an elasticity reading and this is also compared to a control area of stomach wall to calculate a ratio (strain ratio).