Prof Poulsen practices at Radiation Oncology Mater Centre in Brisbane and is also one of the Directors of Radiation Oncology Queensland which operates cancer facilities in Toowoomba, Cairns, Gold Coast and Springfield Lakes. He has a major interest in head and neck cancer, skin cancer with a particular interest in Merkel cell carcinoma. Over 100 articles have been published in the literature and he has completed three prospective trials looking at chemo-radiation in Merkel Cell Carcinoma and is currently the Principal Investigator for TROG 09.03 study on Merkel cell carcinoma.