Ultrasound is a very useful and non-invasive method of investigating certain problems, for example heart or intestinal problems. Often the fur needs to be clipped so we can get a good image, then the probe is applied with a gel. Sometimes we need to have the patient sedated, particularly if they are sore or donít like to be held in one position. The ultrasound itself is not painful, and we can get a lot of information about the internal organs without having to do surgery. Of course, sometimes the information we get from the ultrasound lets us know that surgery will be the next best step for treatment or diagnosis. We have a state-of-the-art ultrasound machine at Paddington Cat Hospital, with colour flow Doppler and probes appropriate for cats.