Dr Pierre Thirion

MD, DES Radiotherapy, DESC Medical Oncology, FFRRCSI
Consultant Radiation Oncologist

Areas of Specialty

  • Prostate Cancer
  • Genito-Urinary Cancers
  • Gastro-Intestinal Malignancies
  • Extra-Cranial Stereotactic Radiation Therapy
  • Brachytherapy
  • Breast Cancer (Radiation Treatment)
  • Radiotherapy
  • Radiation Oncology

Current Memberships

  • All Ireland Cooperative Oncology Research Group (ICORG)
  • European Organisation for Research and Treatment of Cancer


Dr Thirion completed his basic medical training at the University Paris V-René Descartes medical school. He completed his Fellowship in Radiation Oncology (University Paris-V), rotating through the main Parisian radiotherapy departments. In 1998, he completed an additional diploma in medical oncology (University Paris-XI). After working for two years as a Chef de Clinique des Universités – Assistant des Hôpitaux de Paris (Henri Mondor Hospital, Créteil, France). Dr Thirion completed an MD in radiobiology at the Curie Research Institute, Paris (University Paris XI-Paris Sud, 1996). He moved to Ireland in 1999 and completed a post-graduate diploma in statistics in Trinity College Dublin in 2002.



Dr Pierre Thirion is a Consultant Radiation Oncologist practising at Beacon Hospital. Dr Thirion has recognised expertise in new radiotherapy technologies, including IMRT and brachytherapy, and had a major role in the implementation and development of extra-cranial stereotactic radiation therapy in Beacon Hospital. His present areas of research and publications include:

• clinical trials methodology and meta-analyses

• the development of new radiotherapy technologies

• the implementation of radiotherapy-oriented clinical trials.

He is the principal investigator of several national and international clinical trials.