We poke around under the hood of a brand new Cyberknife facility here in Melbourne, the first on the East coast of Australia, and find out what it's all about. What is it for, who might benefit, and being surgeons we have to ask, why do they call it a "knife"?! Is it just to make it sound a bit like surgery - stay tuned to find out!

Dr Alicia Morgans drops into the GU Cast studio to look at the big future challenges in metastatic prostate cancer