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Radiation Oncology Medical Physics PAH (Ipswich Road Campus)

A Radiation Oncology Medical Physicist (ROMP) is an expert in the application of radiation to the treatment of cancer. ROMPS may be described as radiation scientists with an extensive knowledge of radiation and how it interacts with the human body.

They are employed to ensure the safety and best treatment of all Radiation Oncology patients. They also ensure other staff groups and the public are not affected by the radiation practices of an oncology department.

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Our Team

Director

A/Prof Prabhakar Ramachandran, PhD, DABR, Director Therapeutic Physics

Dr. Prabhakar Ramachandran received his PhD from the All India Institute of Medical Sciences, New Delhi and aMasters in Medical Physics from Anna University. He also received his Masters in Computer Applicationsfrom India and Masters in Engineering from La Trobe University. Prior to joining the Princess Alexandra Hospitalas the Director of Therapeutic Physics, he was the Lead Physicist at the Peter MacCallum Cancer Centre. His researchinterests include image-guided radiotherapy, radiomics, treatment planning and radiation dosimetry. 

  • PhD Supervision: 3 (Completed); 3 (Ongoing) - (RMIT & QUT)
  • MSc Supervision: 15 (Completed); 1 (Ongoing) - (RMIT & QUT)
  • BSc Honors Supervision:  3 (Completed) (RMIT)
  • TEAP Supervision:  2 (Completed); 1 (Ongoing)
  • Invited Talks:  24
  • Reviewer (Journals):  28
  • Editorial Board Member:  3
  • Principal Investigator (Grants):  4
  • IAEA Technical Expert:  3 missions (18 Lectures & 9 Prac. Sessions)
  • IAEA Project Consultant (2018)
  • GIAN Foreign Faulty (2019) – Medical Physics.
Lecturing
  • 2014 – 2018: RMIT University (Medical Radiation Sciences)
  • 2017 – 2018: RMIT University - MSc Med. Phys (Treatment planning) 
  • 2019 – 2020: QUT University (Medical Physics & Imaging).
Publications in last five years
  1. Horta F, Catt S, Ramachandran P, Vollenhoven B, Temple-Smith P. Female ageing affects the DNA repair capacity of oocytes in IVF using a controlled model of sperm DNA damage in mice. Hum Reprod. 2020 27;35(3):529-544. 
  2. V Panettieri, D Ball, A Chapman, Ramachandran P et al. Development of a multicentre automated model to reduce planning variability in radiotherapy of prostate cancer. Physics and Imaging in Radiation Oncology 11, 34-40 
  3. Tajaldeen A, Ramachandran P, Alghamdi S, Geso M. On the use of AAA and AcurosXB algorithms for three different stereotactic ablative body radiotherapy (SABR) techniques: Volumetric modulated arc therapy (VMAT), intensity modulated radiation therapy (IMRT) and 3D conformal radiotherapy (3D-CRT). Rep Pract Oncol Radiother. 2019 Jul-Aug;24(4):399-408. 
  4. P Ramachandran, N Esen, A Tajaldeen, M Geso, et al. A comprehensive phantom with multi-detector inserts for pre-treatment quality assurance in stereotactic ablative radiotherapy. Journal of Physics: Conference Series 1154 (1), 012022.
  5. P Ramachandran, D Wanigaratne, J Hagekrykou, et al. Brachytherapy utilising miniaturised X-ray tubes–clinical implementation and future applications. Journal of Physics: Conference Series 1154 (1), 012023.
  6. Shahhoseini E, Ramachandran P, Patterson WR, Geso M. Determination of dose enhancement caused by AuNPs with Xoft® Axxent® Electronic (eBx™) and conventional brachytherapy: in vitro study. International Journal of Nanomedicine 2018, 13:5733-5741.
  7. Prabhakar R, Abdulrahman T, Taylor S, Wanigaratne S, Roozen K, Geso M. Evaluation and performance of arccheck and film using gamma criteria in pre-treatment quality assurance of stereotactic ablative radiotherapy. J. Med. Phys. 2017; 42(4); 251 - 257. [pubmed indexed]
  8. Lonski P, Ramachandran P, Franich R, Kron T. Surface dose measurements in and out of field: Implications for breast radiotherapy with megavoltage photon beams. Z Med Phys. 2017 Jun 5. pii: S0939-3889(16)30079-4. 
  9. Prabhakar R. A New era of Electronic Brachytherapy. World J Radiol. 2017 28;9(4):148-154.
  10. Oates R, Jones D, Foroudi F, Gill S, Ramachandran P, Schneider M, LimJoon M, Kron T. Geographical miss of the prostate during image-guided radiotherapy with a 6-mm posterior expansion margin. J Med Radiat Sci. 2016 Nov 8.
  11. Prabhakar R, Oates R, Chang J, Jones D, Geso M, Cramb J. Rectal complication probability from composite volumes derived from daily CBCT in prostate cancer radiotherapy. J Cancer Res Ther. 2016 Jan-Mar;12(1):374-8. 2016.
  12. Chang JH, Gehrke C, Prabhakar R, Gill S, Wada M, Lim Joon D, Khoo V. RADBIOMOD: A simple program for utilising biological modelling in radiotherapy plan evaluation. Phys Med. 2016 Jan;32(1):248-54.

Assistant Director

Peta Hanlon, MAppSc, Assistant Director Therapeutic Physics

Peta joined the Medical Physicist team at Princess Alexandra Hospital in 2007 after completing her degree from QUT. She enrolled in the ACPSEM Training, Education and Assessment Program (TEAP), studied the Medical Physics Masters part time, and was the first PAH staff to gain this certification in 2012.

During this time she assisted with setting up the IMRT program, the shielding design for expanding the department from 3 to 6 bunkers, and was involved in the commissioning of ExacTrac imaging and treatment planning for intracranial SRS.

Peta was the stereotactic portfolio lead for several years, before accepting the position of Assistant Director of Physics Clinical Training Co-Ordinator.

Education

  • 2010: Queensland University of Technology, Masters in Applied Science (Medical Physics)
  • 2006: Queensland University of Technology, Bachelor of Applied Science, Honours (Medical Physics)

Professional Certifications and Registrations

  • 2017: Registration, ACPSEM
  • 2012: Certification as a Medical Physics Specialist in Radiation Oncology, ACPSEM.

Peer-Reviewed Articles

  1. Katrina YT Seet, Peta M Hanlon, Paul H Charles. "Determination of RW3-to-water mass-energy absorption coefficient ratio for absolute dosimetry", Australasian Physical and Engineering Sciences in Medicine 34(4) 553-558.
  2. T Kairn, D Cassidy, PM Sandford, AL Fielding. "Radiotherapy treatment verification using radiological thickness measured with an amorphous silicon electronic portal imaging device: Monte Carlo simulation and experient", Physics in Medicine and Biology 53(14) 3903-3919 (2008). 

Team Leaders

Sau Fan (Eva) Liu, PhD, Planning Team Leader

Education

  • 2017: The Hong Kong Polytechnic University, PhD
  • 2003: University of New South Wales, Masters (Biomedical Engineering)/Bachelor (First-class Honours, Electrical Engineering).

Professional Certifications and Registrations

  • 2017: Registration, ACPSEM
  • 2012: Certification as a Medical Physics Specialist in Radiation Oncology, ACPSEM
  • 2010: Certified physicist member of Hong Kong Association of Medical Physics (HKAMP)
  • 2010: Passed the Certified Medical Dosimetrist (CMD) examination organised by the Medical Dosimetrist Certification Board (MDCD)
  • 2007: Passed all residet physicist examinations for 2 years resident physicist training program organised by the Hong Kong Association of Medical Physics.

Peer-Reviewed Articles (First Author)

  1.  Liu ESF, Wu VWC, Harris B, Lehman M, Pryor D, Chan LWC. "Vector-model-supported approach in prostate plan optimization". Med Dosim. 2017 Summer;42(2):79-84.
  2. Liu ESF, Wu VWC, Harris B, Foote M, Lehman M, Chan LWC. "Vector-model-supported optimization in volumetric-modulated arc stereotactic radiotherapy planning for brain metastasis." Med Dosim. 2017 Summer;42(2):85-89.

Venkatakrishnan Seshadri, MS, DABR, Treatment Team Leader

TBA.

Catherine Jones, PhD, Gamma Knife Team Leader

Education

  • 2000: Queensland University of Technology, Bachelor of Applied Science, Honours (Physics)
  • 2004: Queensland University of Technology, PhD.

Professional Certifications and Registrations

  • 2016: Registration, ACPSEM
  • 2015: Certification as a Medical Physics Specialist in Radiation Oncology, ACPSEM.

Peer-Reviewed Articles (First Author)

  1. Jones CE, Wolf RL, Detre JA, Das B, Saha PK, Wang J, Zhang Y, Song HK, Wright AC, Mohler III EM, Fairman RM, Zager EL, Velazquez OC, Golden MA, Carpenter JP, Wehrli FW. (2006). "Structural MRI of carotid artery atherosclerotic lesion burden and characterization of hemispheric cerebral blood flow before and after carotid endarterectomy". NMR in Biomedicine. 22:198-208.
  2. Jones CE, Atchison DA, Meder R and Pope JM. (2005). "Refractive index distribution and optical properties of the isolated human lens measured using magnetic resonance imaging (MRI)". Vision Research. 45:2352-2366.
  3. Jones CE and Pope JM. (2004). "Measuring optical properties of an eye lens using magnetic resonance imaging." Magnetic Resonance Imaging. 22:211-220.

Peer-Reviewed Articles (Co-Author)

  1. Fielding AL, Benitez Mendieta J, Maxwell S, Jones CE. (2019). "The effect of respiratory motion on electronic portal imaging device dosimetry". Journal of Applied Clinical Medical Physics. 20(3):45-55.
  2. de Chavez R, Jones CE and Charles PH. (2019). "Integral small field output factor measurements using a transmission ionisation chamber." Australasian Physical and Engineering Sciences in Medicine. 42(1):235-244.
  3. Hopper T, Vasilic B, Pope JM Jones CE, Epstein CL, Song HK, Wehrli FW. (2006). "Experimental and computational analysis of the effects of slice distortion from a metallic sphere in an MRI phantom". Magn. Reson. Imaging. 24:1077-1085.
  4. Atchison DA, Pritchard N, Schmid KL, Scott DH, Jones CE and Pope JM. (2005). "Shape of the retinal surface in emmetropia and myopia". Invest. Ophthalmol. Vis. Sci. 46:2698-2707.
  5. Atchison DA, Jones CE, Schmid KL, Pope JM, Strugnell WE, Riley RA. (2004). "Eye Shapre in emmetropia and myopia". Invest Ophthalmol. Vis. Sci. 45:3380-3386.

Luke Webb, MAppSc, Stereotactic Team Leader

Education

  • 2012: Queensland University of Technology, Bachelor of Applied Science (Physics)
  • 2014: Queensland University of Technology, Master of Applied Science (Medical Physics).

Professional Certifications and Registrations

  • 2017-19: Finance Officer Qld Brandch of the ACPSEM
  • 2018: Certified in Radiation Therapy QA, ACPSEM
  • 2018: Certified Medical Physics Specialist in Radiation Oncology, ACPSEM.

Peer-Reviewed Articles (First Author)

  1. Webb LK, Inness EK and Charles PH. (2018). "A comparative study of three small-field detectors for patient specific stereotactic arc dosimetry." Australasian Physical and Engineering Sciences in Medicine. 41(1):217-223.

Conference Presentations (Oral)

  • Webb LK, O'Connor P, Charles PH, Shakeshaft J. "Monaco 5.10 as an independent plan checking solution". Presented at EPSM 2017.
  • Webb LK, Charles PH. "Assessment of an EPID based in-vivo dosimetry solution". Presented at EPSM 2018.

Conference Presentations (Poster)

  1. Webb LK, Horgan EK, Jones CE, Charles PH. "Calibration free output factors on the Leksell Gamma-Knife with the Exradin W1 PSD". Presented at EPSM 2016.
  2. Webb LK, Horgan EK. "Artefact correction with EPIgray: an EPID based in-vivo dosimetry solution". Presented at EPSM 2019.

In-charge Physicists

Ben Perrett, MAppSc

To be advised.

Emma Horgan, MAppSc

To be advised.

Salma Ibrahim, MAppSc

To be advised.

Registrars

Georgia Brown, MAppSc

Education

  • 2018: Queensland University of Technology, Masters in Science (Medical Physics)
  • 2016: University of Queensland, Graduate Entry Diploma in Science (Physics)
  • 2014: Queensland University of Technology, Bachelor of Applied Science with Distrinction (Chemistry/Biochemistry).

Professional Certifications and Registrations

  • 2018: TEAP Registrar, ACPSEM
  • 2018: ACPSEM Associate Member

Conference Presentations

  1. Brown G, Liu SF, Boyd J, Seshadri V. (2019). "Validating a Clinical Electron Monte Carlo Model using both Low Melting Point Alloy and 3D-Printed Electron Inserts". Presented at EPSM 2019.
  2. Brown G, Jones CE, Zawlodska S. (2019). "Pacemaker Dose Estimates for Leksell Gamma Knife Patients". Presented at EPSM 2019.
  3. Brown G, O'Connor P. (2018). "Intrafraction Imaging: The Effect of MV Field Size on Image Quality". Presented at EPSM 2018.

Christopher Noble, PhD

To be advised.

Michal Wawrzak, MSc

To be advised.

Orrie Dancewicz, MAppSc

Education

  • 2013: Master of Applied Science (Medical Physics), Queensland University of Technology
  • 2011: Bachelor of Science (Honours) - Physics major, Griffith University
  • 2010: Bachelor of Information Technology, Griffith University.

Professional Certifications and Registrations

  • 2019: Certification in Diagnostic Imaging Medical Physics
  • 2019: ACPSEM Associate Member.

Peer-Reviewed Articlews (First-Author)

  1. Dancewicz OL, Sylvander SR, Markwell TS, Crowe SB and Trapp JV. (2017). Radiological properties of 3D printed materials in kilovoltage and megavoltage photon beams. Physica Medica. 38:111-118.

Conference Presentations (Poster)

  1. Dancewicz OL. (April 2017). The Effect of 99mTc Activity on Positron Emission Tomography Images. Poster presentation at the 47th Annual Meeting of the Australian and New Zealand Society of Nuclear Medicine, Hobart, Tasmania.

Visiting Physicists

Akash Mehta, MAppSc

To be advised.

Keya Amarsee, MAppSc

Keya finished her Master of Applied Science from Queensland University of Technology in June 2020. Her Masters project involved automatic fiducial marker detection in prostate cancer patients using a deep learning algorithm. She joined the Medical Physicist team at Princess Alexandra Hospital in June 2020.

Education

  • 2020: Master of Applied Science (Medical Physics), Queensland University of Technology
  • 1995: Bachelor of Science (Physics), University of India.

Radiation Safety Officers

Catherine Jones, PhD

See bio under the Team Leaders tab.

Prabhakar Ramachandran, PhD, DABR

See bio under the Director tab.

Physics research interest

Topics

Students are welcome to contact Prabhakar Ramachandran if interested in investigating these topics:

  • Small field dosimetry
  • Gamma Knife dosimetry
  • TLD, OSLD dosimetry
  • Monte Carlo simulations
  • Applications of artificial intelligence in radiotherapy
  • Stereotactic radiotherapy
  • Magnetic resonance imaging (MRI) in radiotherapy

Publications, presentations and awards

Publications

  1. Development of a multicentre automated model to reduce planning variability in radiotherapy of prostate cancer. Panettieri V, Ball D, Chapman A, Cristofaro N, Gawthrop J, Griffin P, Herath S, Hoyle S, Jukes L, Kron T, Markham C, Marr L, Moloney P, Nelli F, Ramachandran P, Smith A, Hornby CJ. Physics and Imaging in Radiation Oncology. 2019 11, 34-40.
  2. On the use of AAA and AcurosXB algorithms for three different stereotactic ablative body radiotherapy (SABR) techniques: Volumetric modulated arc therapy (VMAT), intensity modulated radiation therapy (IMRT) and 3D conformal radiotherapy (3D-CRT). Tajaldeen A, Ramachandran P, Alghamdi S, Geso M. Rep Pract Oncol Radiother. 2019. Jul-Augt; 24(4):399-408.
  3. A comprehensive phantom with multi-detector inserts for pre-treatment quality assurance in stereotactic ablative radiotherapy. Ramachandran P, Esen N, Tajaldeen A, Geso M, et al. Journal of Physics: Conference Series. 2019. 1154(1), 012022:1-5.
  4. Brachytherapy utilising miniaturised X-ray tubes - clinical implementation and future applications. Ramachandran P, Wanigaratne D, Hagekrykou J, et al. Journal of Physics: Conference Series. 2019. 1154(1), 012023:1-5.
  5. Fielding AL, Benitez Mendieta J, Maxwell S, Jones CE. (2019). "The Effect of respiratory motion on electronic portal imaging device dosimetry". Journal of Applied Clinical Medical Physics. 20(3):45-55.
  6. de Chavez R, Jones CE and Charles PH. (2019). "Integral small field output factor measurements using a transmission ionisation chamber." Australasian Physical and Engineering Sciences in Medicine 42(1):235-244.

Presentations

  1. Ramachandran P. Biological Optimization. Fostering Medical Physics Research and clinical practice for better health care, CME on Advanced Radiotherapy Concepts 2019. (ARC 2019). India, 25 August 2019.
  2. Ramachandran P. Radiomics. Fostering Medical Physics Research and clinical prctice for better health care, CME on Advanced Radiotherapy Concepts 2019. (ARC 2019). India, 25 August 2019.
  3. Ramachandran P. Faculty - One day workshop: Python in Medical Physics - A technology of the ear, 19 August 2019, India.
  4. Leat C, Ramachandran P, Boyd J, Langton C, Chapman M. (EPSM 2019 poster presentation). Monte Carlo modelling and verification of Tungsten Carbide electron applicator cut-outs.
  5. Esen N, Ramachandran P, Geso M. (EPSM 2019 poster presentation). SABR pre-treatment verification using alanine and nanodot detectors.
  6. Ramachandran P, Perrett B, Seshadri V. (EPSM 2019 oral presentation). A study on the use of GammaPlan convolution algorithm for dose calculation on CBCT images.
  7. Abdullah A, Ramachandran P, Seshadri V. (EPSM 2019 oral presentation). Assessment of cone beam CT Image Quality and Dose for varied projection images.
  8. Perrett B, Brown G,Liu S. (EPSM 2019 oral presentation). Commissioning ExaFlex™ superflab bolus for enhancement of surface dose to the chest wall/breast.
  9. Noble C, Liu S, Hanlon P. The Effect of Gantry Sag on Patient Specific QA of Stereotactic Radiotherapy Plans, EPSM 2019, Australia, October 2019, Oral presentation.
  10. Noble C, Liu S. Time Resolved Gamma Analysis in Patient Specific QA of VMAT Treatment Plans, EPSM 2019, Australia, October 2019, Poster presentation.
  11. Noble C, Liu S, Ramachandran P. Automated plan checking of hte Pinnacle TPS using Python, EPSM 2019, Australia, October 2019, Oral presentation.
  12. Liu SF, Liu H, Seshadri V, Jones CE, Bui T, Porceddu S. Pilot study of 18F-FDG PET quantitative analysis in head and neck cancer patients, EPSM 2019, Australia, October 2019, Oral presentation.
  13. Thomas S, Ramachandran P, Jones C. Evaluation of an in-house semi-automated contouring tool in delineating lung gross tumour volume, EPSM 2019, Australia, October 2019, Oral presentation.
  14. Brown G, Liu S, Boyd J, Seshadri V, Wawrzak M. Validating a Clinical Electron Monte Carlo Model using both Low Melting Point Alloy and 3D-Printed Electron Inserts, EPSM 2019, Australia, October 2019, Oral presentation.
  15. Brown G, Jones C, Zawlodska S. Pacemaker Dose Estimates for Leksell Gamma Knife Patients, EPSM 2019, Australia, October 2019, Oral presentation.
  16. Jones CE, Perrett B, Webb L, Brown GPG. Independent dose verification of Leksell Gamma Knife treatment plans, EPSM 2019, Australia, October 2019, Oral presentation. 
  17. Jones CE, Ramachandran P, Lehman M. Semi-automated segmentation of non-small-cell lung carcinoma (NSCLC) GTVs in cone beam computed tomography (CBCT) scans, EPSM 2019, Australia, October 2019, Oral presentation.
  18. Crowe SB, Whittle E, Jones C, Kairn T. "Dosimeter selection for small field percentage depth dose and tissue-maximum-ratio measurements". ESTRO 38, Italy, April 2019, Poster presentation.
  19. Hashim, Perrett B, Ramachandran P. Assessment of Philips metal artefact reduction of orthopaedic implants (O-MAR) algorithm for radiotherapy planning datasets, EPSM 2019, Australia, October 2019, Poster presentation.
  20. Ibrahim S, Liu S, Perrett B, Hanlon P, Ramachandran P. Control Point Spacing Comparison for VMAT Optimisation, EPSM 2019, Australia, October 2019, Poster presentation.
  21. Perrett B, Liu S. The importance of commissioning and on-going quality assurance of headrests for patient immobilisation. EPSM 2019, Australia, October 2019, Poster presentation.
  22. Seshadri V, Ibrahim S, Ramachandran P. Performance Comparison of 2D Arrays for Routine Profile Measurements and Analysis. EPSM 2019, Australia, October 2019, Poster presentation.
  23. Webb L, Horgan E, Noble C. Artefact correction with EPIgray: an EPID based in-vivo dosimetry solution. epsm 2019, Australia, October 2019, Poster presentation.

Awards

  1. Liu SF, Liu H, Seshadri V, Jones CE, Bui T, Porceddu S. EPSM 2019 winner "Best Oral Presentation, Imaging" Pilot study of 18F-FDG PET quantitative analysis in head and neck cancer patietns.
  2. Webb L, Horgan E, Noble C. EPSM 2019 winner "Best Poster Presentation, Radiation Oncology". Artefact correction with EPIgray: an EPID based in-vivo dosimetry solution.
Last updated 6 October 2020
Last reviewed 30 September 2020