Conjoint A/Prof. Peter Greer
|Work Phone||(02) 4014 3689|
|Fax||(02) 4014 3169|
Conjoint Associate Professor
School of Mathematical and Physical Sciences
The University of Newcastle, Australia
|Office||5.09C, Radiation On, Mater Hospital|
Associate Professor Peter Greer currently holds a full-time research position leading medical physics research at the Calvary Mater Newcastle Hospital and University of Newcastle. He graduated with a PhD in medical physics from the University of Adelaide in 2001.
His work broadly aims to improve the treatment of cancer patients with radiation therapy and enable high quality effective treatments.
In 2005 Peter began a grant funded research career and has since received $5M in research funding including NHMRC, Cancer Council NSW, Prostate Cancer Foundation Australia, and ARC grants. He has established a strong track record of translating research funding into successful outcomes. Several aspects of his research are currently being developed into commercial products for radiation oncology and medical imaging.
He has received several awards including Early Career Researcher of the Year from the Hunter Medical Research Institute in 2011 - the premier award for early career medical research in the region. He has 50 publications in the last five years including several invited review articles. Peter served on a NHMRC grant review panel in 2011.
- MRI based planning
- dose verification
- electronic portal imaging
Approximately half of all cancer patients receive radiation therapy. It is a major frontline treatment for cancer along with surgery and is often complemented by chemotherapy. High energy radiation beams are used to damage the DNA of cancer cells in solid tumours while minimising the normal tissue damage to surrounding organs. The radiation can be delivered externally using medical linear accelerators (teletherapy) or internally using radioactive sources (brachytherapy). Modern radiation therapy is extremely sophisticated with imaging techniques such as MRI, CT, PET used for delineating tumour targets, complex dose calculation algorithms to plan the treatments and highly tailored dose distributions delivered using intensity modulated radiation beams. Medical physicists play a key role in all aspects of radiation oncology and drive the development of improved technology and techniques through research.
Peter has been conducting research since 2005 to improve radiation therapy planning with MRI. In collaboration with CSIRO Biomedical Imaging Research Group at the Australian E-Health Research Centre he has developed the first atlas-based deformable image registration method to map realistic electron densities to MRI scans for dose calculations. This could lead to the use of MRI scans directly for radiation oncology prostate planning and adaptive treatment. This will reduce uncertainties in the planning of treatments and has been recently published in the leading international clinical radiation oncology journal.
In parallel with this, accurate prostate auto-segmentation methods using atlas based methods have been developed. This work won an international challenge for automatic prostate segmentation in MRI images (MICCAI, London, 2009). This work is critical for the use of MRI in adaptive radiotherapy planning and could lead to improvements in treatment targeting. He currently has an active research program using the state-of-the-art Calvary Mater 3T Skyra MRI scanner installed in April 2011 to improve radiation therapy planning. This scanner has recently obtained a Master Research Agreement with Siemens which will facilitate research in audiovisual biofeedback as well as the development of specialised sequences for lung imaging.
Peter is recognised as a world leader in the field of radiation dosimetry with flat-panel imaging devices, investigating methods to measure the dose received by patients during treatment. He published one of the major papers in this field which has been cited over 130 times. He has been twice the Scientific Director for the major international conference in radiotherapy treatment imaging. He is Track Chair for the radiotherapy verification stream for the World Congress on Medical Physics and Bioengineering in 2012. He has been awarded the Varian Prize for research in this field and is regularly invited to give presentations at national and international conferences and workshops. His reputation in this area has resulted in him currently being the only worldwide test centre to have the major linear accelerator vendors prototype imager design. This collaboration is improving these devices for dosimetry and developing software algorithms to enable their more widespread clinical use for dosimetry.
Publications (PubMed) [ Note this is an incomplete list ]
Current collaborations include:
- CSIRO E-Health Centre, Biomedical Imaging Group (MRI based treatment planning)
- CancerCare Manitoba (Real-time dose verification of radiation therapy treatments)
- University of Sydney (A/V Biofeedback for lung MRI imaging, dose verification for MRI-linac, Development of next-generation radiotherapy imaging devices)
Fields of Research
|090399||Biomedical Engineering Not Elsewhere Classified||10|
|110399||Clinical Sciences Not Elsewhere Classified||10|
Centres and Groups
- Hunter Medical Research Institute
- PRC - Priority Research Centre for Bioinformatics, Biomarker Discovery and Information-Based Medicine
Body relevant to professional practice.
- Treasurer - Australasian College of Physical Scientists and Engineers in Medicine
- Accredited Physicist - Australasian College of Physical Scientists and Engineers in Medicine
- Ordinary Member - Australasian College of Physical Scientists and Engineers in Medicine
Grant Review Panel Member
|01/03/2011 - 01/12/2011|
Early Career Researcher of the Year
The premier award for early career medical research in the Hunter region
Best poster prize
Canadian College of Physicists in Medicine (Canada)
Best research poster
3D Segmentation Challenge for Clinical Applications
MICCAI (United Kingdom)
Best presentation in Radiation therapy
Varian Medical Systems (Australia)
EPSM-ABEC conference, 2007
33rd National Conference
Association of Medical Physicists of India, India (Invited Presenter)
Ballina Relay for Life and Men of League Fundraiser
Cancer Council NSW, Australia (Invited Presenter)
EPID based QA
World Congress on Medical Physics and Bioengineering, China (Invited Presenter)
EPID for pre-treatment VMAT verification
International Conference on 3D Dosimetry, Australia (Invited Presenter)
Challenges for Verification of IMRT
16th International Conference on Solid State Dosimetry, Australia (Invited Presenter)
Atlas based methods for MR dose planning
RadAim Conference, Australia (Invited Presenter)
Peter was Honorary Treasurer of the Australasian College of Physical Scientists and Engineers in Medicine, the professional body representing around 600 medical physicists and engineers working in medicine in Australia and New Zealand. He has been twice the Scientific Director for the major international conference in radiotherapy treatment imaging. He was Track Chair for the radiotherapy verification stream for the World Congress on Medical Physics and Bioengineering in 2012. Peter manages his own research group based at the Calvary Mater Newcastle, including staff supervision, management of budgets and reports.
- medical physics
Peter teaches medical physics courses at 4th year level. He has supervised many research higher degree students.