Changes

: Another method is to send multiple beams of [[Ionising Radiation|ionising radiation]] from different directions so that they all cross over at the same point in the body (the location of the tumour). Where the beams cross over there will be a very high [[intensity]] of [[Ionising Radiation|ionising radiation]] which will destroy the [[tumour]].

{{#ev:youtube|https://www.youtube.com/watch?v=zI2vRwFKnHQ}}