Professor Bruce Campbell is an internationally recognised stroke neurologist whose research into brain imaging and emergency treatment of stroke has led to global changes in clinical practice, particularly through the widespread use of CT-perfusion imaging and endovascular thrombectomy for ischaemic stroke. He led the EXTEND-IA trial of endovascular thrombectomy (NEJM 2015, >1780 cites) that used CT perfusion imaging thresholds developed in his PhD to identify patients most likely to benefit from restoration of blood flow and then led guidelines change and Victorian statewide implementation. The CT-perfusion imaging approach was subsequently used by others to extend the treatment window to 24 hours.