Evaluation of jaws-only intensity modulated radiation therapy treatment plans using Octavius 4D system

• Autorzy: Than Tai D. , Oanh L. T. , Son N. D. , Loan T. T. H.

Identyfikatory

DOI

10.2478/pjmpe-2018-0010

• Języki publikacji: EN

Abstrakty

EN

Introduction: Jaws-Only Intensity modulated radiation therapy (JO-IMRT) is a technique uses the collimator jaws of the linear accelerator (LINAC) to delivery of complex intensity patterns. In previous studies, pretreatment patient specific quality assurance for those JO-IMRT were also performed using ionization chamber, MapCHECK2, and Octavius 4D and good agreements were shown. The aim of this study is to further verify JO-IMRT plans in 2 different cases: one with the gantry angle set equal to beam angle as in the plans and the other with gantry angle set to zero degree. Materials and Methods: Twenty-five JO-IMRT, previously verified, were executed twice for each plan. The first one used a real gantry angle, and the second one used a 0° gantry angle. Measurements were performed using Octavius 4D 1500. Results: The results were analyzed using Verisoft software. The results show that the Gamma average was 97.32 ± 2.21% for IMRT with a 0° gantry angle and 94.72 ± 2.67% for IMRT with a true gantry angle. Conclusion: In both cases, gamma index of more than 90% were found for all of our 25 JO-IMRT treatment plans.

Słowa kluczowe

EN

intensity-modulated radiation therapy (IMRT); jaws only IMRT (JO-IMRT); quality assurance (QA); Octavius 4D; MapCHECK2

• Wydawca: Polskie Towarzystwo Fizyki Medycznej ; De Gruyter
• Czasopismo: Polish Journal of Medical Physics and Engineering
• Rocznik: 2018
• Tom: Vol. 24, Iss. 2
• Strony: 75--78
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Than Tai D.

• Department of Radiation Oncology, Dong Nai General Hospital, Bien Hoa, 810000, Vietnam
• Faculty of Physics & Engineering Physics, VNUHCM - University of Science, Ho Chi Minh, 749000, Vietnam
• Faculty of Medicine, Nguyen Tat Thanh University, Ho Chi Minh, 702000, Vietnam

autor

Oanh L. T.

• Faculty of Physics & Engineering Physics, VNUHCM - University of Science, Ho Chi Minh, 749000, Vietnam
• Faculty of Medicine, Nguyen Tat Thanh University, Ho Chi Minh, 702000, Vietnam

autor

Son N. D.

• Chi Anh Medical Technology Co.,Ltd., Ho Chi Minh, 717066, Vietnam

autor

Loan T. T. H.

• Faculty of Physics & Engineering Physics, VNUHCM - University of Science, Ho Chi Minh, 749000, Vietnam

Bibliografia

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• [13] Tai DT, Son ND, Loan TTH, Trang NTH. Initial experiences of applying the jaws-only IMRT technique in Dong Nai General Hospital, Vietnam. IFMBE Proceedings. 2018;63:335-339
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Uwagi

Niepoprawna numeracja bibliografii w artykule.