Treatment for some aggressive brain cancer patients could be “revolutionised” after scientists found a new way to find out who may benefit from immunotherapy cancer drugs. Some glioblastoma tumours may respond well to immunotherapy, but there is currently no way to assess this without an invasive brain biopsy – which carries the risk of infection and bleeding. As a result, biopsies are rarely carried out for glioblastomas prior to surgery to remove the tumour, meaning these patients are missing out on improved treatments. Now there is hope after researchers developed a new imaging technique wh…