M C Lopes1, A Cavaco2, K Jacob3, L Madureira4, S Germano5, S Faustino6, J Lencart7, M Trindade8, J Vale9, V Batel10, M Sousa11, A Bernardo12, S Brás13, S Macedo14, D Pimparel15, F Ponte16, E Diaz17, A Martins18, A Pinheiro19, F Marques20, C Batista21, L Silva22, M Rodrigues23, L Carita24, E Gershkevitsh25, J Izewska26. 1. Serviço de Física Médica, IPOCFG, E.P.E., Av. Bissaya Barreto, 3000-075 Coimbra, Portugal. Electronic address: mclopes@ipocoimbra.min-saude.pt. 2. CHUC, Coimbra, Portugal. 3. Hospital CUF Descobertas, Lisboa, Portugal. 4. Hospital de Santa Maria, CHLN, E.P.E., Lisboa, Portugal. 5. IRIO, Lisboa, Portugal. 6. Hospital da Luz, Lisboa, Portugal. 7. IPOPFG, E.P.E., Porto, Portugal. 8. CHTMAD, E.P.E., Vila Real, Portugal. 9. CRP, Porto, Portugal. 10. Centro Hospitalar S. Joao, E.P.E., Porto, Portugal. 11. Clinica Quadrantes, Porto, Portugal. 12. Centro Oncologico Dra. Natalia Chaves, Carnaxide, Portugal. 13. Unidade Radioterapia do Algarve (Quadrantes_Faro), Faro, Portugal. 14. CLISA, Amadora, Portugal. 15. Hospital de Braga, Braga, Portugal. 16. Dep. de Radioterapia e Oncologia Clinica, Porto, Portugal. 17. Clinica Quadrantes, Unidade Radioterapia do Funchal, Funchal, Portugal. 18. Lenicare/Hospital do Espírito Santo, Évora, Portugal. 19. CHBM, E.P.E., Barreiro, Portugal. 20. Hospital de Santiago, Setúbal, Portugal. 21. Quadrantes Santarém, Hospital de Santarém, Santarém, Portugal. 22. Centro Clinico do SAMS, Lisboa, Portugal. 23. Fundação Champalimaud, Lisboa, Portugal. 24. IPOLFG, E.P.E., Lisboa, Portugal. 25. North Estonia Regional Hospital, Tallinn, Estonia. 26. International Atomic Energy Agency, Vienna, Austria.
Abstract
BACKGROUND AND PURPOSE: The Medical Physics Division of the Portuguese Physics Society (DFM_SPF) in collaboration with the IAEA, carried out a national auditing project in radiotherapy, between September 2011 and April 2012. The objective of this audit was to ensure the optimal usage of treatment planning systems. The national results are presented in this paper. MATERIAL AND METHODS: The audit methodology simulated all steps of external beam radiotherapy workflow, from image acquisition to treatment planning and dose delivery. A thorax CIRS phantom lend by IAEA was used in 8 planning test-cases for photon beams corresponding to 15 measuring points (33 point dose results, including individual fields in multi-field test cases and 5 sum results) in different phantom materials covering a set of typical clinical delivery techniques in 3D Conformal Radiotherapy. RESULTS: All 24 radiotherapy centers in Portugal have participated. 50 photon beams with energies 4-18 MV have been audited using 25 linear accelerators and 32 calculation algorithms. In general a very good consistency was observed for the same type of algorithm in all centres and for each beam quality. CONCLUSIONS: The overall results confirmed that the national status of TPS calculations and dose delivery for 3D conformal radiotherapy is generally acceptable with no major causes for concern. This project contributed to the strengthening of the cooperation between the centres and professionals, paving the way to further national collaborations.
BACKGROUND AND PURPOSE: The Medical Physics Division of the Portuguese Physics Society (DFM_SPF) in collaboration with the IAEA, carried out a national auditing project in radiotherapy, between September 2011 and April 2012. The objective of this audit was to ensure the optimal usage of treatment planning systems. The national results are presented in this paper. MATERIAL AND METHODS: The audit methodology simulated all steps of external beam radiotherapy workflow, from image acquisition to treatment planning and dose delivery. A thorax CIRS phantom lend by IAEA was used in 8 planning test-cases for photon beams corresponding to 15 measuring points (33 point dose results, including individual fields in multi-field test cases and 5 sum results) in different phantom materials covering a set of typical clinical delivery techniques in 3D Conformal Radiotherapy. RESULTS: All 24 radiotherapy centers in Portugal have participated. 50 photon beams with energies 4-18 MV have been audited using 25 linear accelerators and 32 calculation algorithms. In general a very good consistency was observed for the same type of algorithm in all centres and for each beam quality. CONCLUSIONS: The overall results confirmed that the national status of TPS calculations and dose delivery for 3D conformal radiotherapy is generally acceptable with no major causes for concern. This project contributed to the strengthening of the cooperation between the centres and professionals, paving the way to further national collaborations.
Authors: Jacek Wendykier; Marcin Bieniasiewicz; Aleksandra Grządziel; Tadeusz Jedynak; Wiktor Kośniewski; Marta Reudelsdorf; Piotr Wendykier Journal: Rep Pract Oncol Radiother Date: 2016-02-13
Authors: Jacek Wendykier; Aleksandra Grządziel; Barbara Bekman; Marcin Bieniasiewicz; Adam Bekman; Piotr Wendykier; Bożena Woźniak; Marta Reudelsdorf; Krzysztof Ślosarek Journal: Rep Pract Oncol Radiother Date: 2021-08-12