References
- 1. Cashmore, J. (2008). The characterization of unflattened photon beams from a 6 MV linear accelerator. Phys. Med. Biol., 53(7), 1933–1946.
- 2. Kragl, G., af Wetterstedt, S., Knausl, B., Lind, M., Mc- Cavana, P., Knoos, T., McClean, B., & Georg, D. (2009). Dosimetric characteristics of 6 and 10 MV unflattened photon beams. Radiother. Oncol., 93(1), 141–146.
- 3. Narayanasamy, G., Saenz, D., Cruz, W., Ha, C. S., Papanikolaou, N., & Stathakis, S. (2016). Commissioning an Elekta Versa HD linear accelerator. J. Appl. Clin. Med. Phys., 17(1), 179–191.10.1120/jacmp.v17i1.5799
- 4. Riis, H. L., Beierholm, A. R., Zimmermann, S. J., Helt-Hansen, J., & Andersen, C. E. (2014). Measuring output factors for flattening filter free beams: A case study of the Elekta Versa HD. In ESTRO-33, 4–8 April 2014, Vienna, Austria. (EP-1525).
- 5. Paynter, D., Weston, S. J., Cosgrove, V. P., Evans, J. A., & Thwaites, D. I. (2014). Beam characteristics of energy-matched flattening filter free beams. Med. Phys., 41, 052103.
- 6. Mohammed, M., Chakir, E., Boukhal, H., Mroan, S., & El Bardouni, T. (2016). Evaluation of the dosimetric characteristics of 6 MV flattened and unflattened photon beam. Journal of King Saud University-Science, 29, 371–379.
- 7. Pichandi, A., Ganesh, K. M., Jerin, A., Balaji, K., & Kilara, G. (2014). Analysis of physical parameters and determination of inflection point for flattening filter free beams in medical linear accelerator. Reports of Practical Oncology and Radiotherapy, 19, 322–331.
- 8. Ting, J. (2012). Facts, fiction and future of flattening filter free beams (FFF of FFF beams). In AAPM 54th Annual Meeting, 27 July – 2 August 2012, Melbourne, Australia. Available from https://www.aapm.org/meetings/2012AM/PRAbs.asp?mid=68&aid=19886.
- 9. Fogliata, A., Garcia, R., Knoos, T., Nicolini, G., Clivio, A., Vanetti, E., Khamphan, C., & Cozzi, L. (2012). Definition of parameters for quality assurance of flattening filter free (FFF) photon beams in radiation therapy. Med. Phys., 39(10), 6455–6464.
- 10. Vassiliev, O. N., Titt, U., Ponisch, F., Kry, S. F., Mohan, R., & Gillin, M. T. (2006). Dosimetric properties of photon beams from a flattening filter free clinical accelerator. Phys. Med. Biol., 51, 1907–1917.
- 11. Duane, S. (2013). Dosimetry for flattening filter free (FFF) linac beams and small fields (SF). National Physical Laboratory. Available from dl.icdst.org/pdfs/files2/58b4dd654592e98362ae5f3e87226fc1.pdf.
- 12. Kry, S. F. (2013). Flattening filter free accelerators. The University of Texas, MD Anderson Cancer Center, Radiological Physics Center. Available from www.medfys.no/nfmf-documents/Opplastet/downloads/2012/07/Kry_FFF.pdf.
- 13. Xiao, Y., Kry, S. F., Popple, R., Yorke, E., Papanikolaou, N., Stathakis, S., Xia, P., Huq, S., Bayouth, J., Galvin, J., & Yin, F. -F. (2015). Flattening filter-free accelerators: a report from the AAPM Therapy Emerging Technology Assessment Work Group. J. Appl. Clin. Med. Phys., 16(3), 12–29.
- 14. Budgell, G., Brown, K., Cashmore, J., Duane, S., Frame, J., Hardy, M., Paynter, D., & Thomas, R. (2016). IPEM Topical Report 1: Guidance on implementing flattening filter free (FFF) radiotherapy. Phys. Med. Biol., 61, 8360–8394.
- 15. Garcia, R. (2011). Recommendations on QA of FFF beams. Berlin: Varian Oncology Summit.
- 16. Podgorsak, E. B. (2005). Radiation oncology physics: a handbook for teachers and students. Vienna: International Atomic Energy Agency.
- 17. Ponisch, F., Titt, U., Vassiliev, O. N., Kry, S. F., & Mohan, R. (2006). Properties of unflattened photon beams shaped by a multileaf collimator. Med. Phys., 33(6), 1738–1746.10.1118/1.2201149
- 18. Followill, D., Tailor, R., Tello, V., & Hanson, W. (1998). An empirical relationship for determining photon beam quality in TG-21 from a ratio of percent depth doses. Med. Phys., 25, 1202–1205.10.1118/1.598396
- 19. Allen, J. (2014). High dose rate mode (flattening filter free) radiotherapy. Clinical advantages of high dose rate mode, available with Agility™ on Elekta’s Versa HD™ linear accelerator. Crawley: Elekta Ltd.
- 20. van Gasteren, J. J. M., Heukelom, S., Jager, H. N., Mijnheer, B. J., van der Laarse, R., van Kleffens, H. J., Venselaar, J. L. M., & Westermann, C. F. (1998). Determination and use of scatter correction factors of megavoltage photon beams. Netherlands Commission on Radiation Dosimetry. (NCRD Report no. 12).
- 21. Kry, S. F., Vassiliev, O. N., & Mohan, R. (2010). Outof- field photon dose following removal of the flattening filter from a medical accelerator. Phys. Med. Biol., 55(8), 2155–2166.
- 22. Cashmore, J. (2013). Operation, characterisation and physical modelling of unflattened medical linear accelerator beams and their application to radiotherapy treatment planning. Unpublished PhD Thesis, University of Birmingham.
- 23. Zhu, T. C. (2012). Dosimetric challenge for flattening filter free (FFF) photon beams. In AAPM DVC Spring Symposium, April 20, 2012, Philadelphia, USA. American Association of Physicists in Medicine.
- 24. ICRU. (1999). ICRU Report 62: Prescribing, recording and reporting photon beam therapy. (Supplement to ICRU Report 50). Journal of the ICRU, 32(1).
- 25. Georg, D., Knoos, T., & McClean, B. (2011). Current status and future perspective of flattening filter free photon beams. Med. Phys., 38, 1280–1283.