Cavitation, also called ultrasonic lipolysis, is a body contouring treatment that is used to remove fat deposits under your skin. It can also be referred to by brand names, such as Liponix or Ultrashape. This procedure is a safer alternative to surgical options, like liposuction. The treatment uses ultrasonic radio waves to break apart fat cells, which are then absorbed into your body by your lymphatic system. cavitation is different than other similar treatments, like ultrasound liposuction, because it doesn’t require any incisions. This means recovery is easier. It also means that results might be less noticeable.