After completing his PhD in Germany, Tomas Kron migrated to Australia in 1989 where he commenced his career in radiotherapy physics. From 2001 to 2005 he worked in Canada at the London Regional Cancer Centre on the commissioning of one of the first tomotherapy units. In 2005, Tomas became principal research physicist at Peter MacCallum Cancer Centre in Melbourne, where he now is Director of Physical Sciences. He holds academic appointments at Wollongong, RMIT and Melbourne Universities and serves as associated editor for the journals ‘Radiation Measurements’ and ‘Clinical Oncology (RCR)’. Tomas has an interest in education of medical physicists, dosimetry of ionising radiation, clinical trials and radiation protection in medicine demonstrated by more than 350 papers in refereed journals and 110 invited conference presentations. He has been a consultant for IAEA for nearly 30 years, is a member of an ICRP task group and principal investigator in several clinical trials. For his contributions to science and medicine Prof Kron has been honoured with an Order of Australia Medal.