This is a special type of ultrasound to measure any damage in your liver. Just like an ultrasound it involves jelly on your tummy and a probe that is moved around over the area of your liver. You will feel a regular thud – a bit like someone tapping your skin with their finger. The specialist doing the fibroscan will usually be able to tell  you at the time whether there is much scarring or damage in your liver. There is no special preparation or aftercare instructions needed for a fibroscan.