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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:01 |
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Conference: Bucharest University Faculty of Physics 2022 Meeting
Section: Biophysics; Medical Physics
Title:
Planning and evaluation of head and neck cancers
Authors:
Rahela CIOBANU(1), Mirabela DUMITRACHE(1,2), Daniela STROE(2), Claudia Gabriela CHILOM(1)
*
Affiliation:
1) University of Bucharest, Faculty of Physics, Bucharest, Romania
2) Clinical Hospital " COLTEA", Department of Radiation Oncology, Bucharest, Romania
E-mail
ciobanurahela@yahoo.ro
Keywords:
Radiation therapy, dosimetric evaluation, gamma analysis, VMAT technique
Abstract:
This study presents the dosimetric evaluation of the treatment plan for 60 patients with head and neck cancers (HNC) from the Radiotherapy Clinic of Colțea Clinical Hospital in Bucharest using the VMAT (Volumetric Modulated Arc Therapy) irradiation technique. For all 60 treatment plans were used a 360 degree long dynamic arc beam, respectively two dynamic arc beams, using the MONACO 5.11 planning system. In modulated intensity radiotherapy, additional quality assurance is required because the complexity of the technology can lead to systematic and random errors in dose administration. Therefore, the gamma index analysis was used to compare the gamma index for the agreement distance of 3 mm and the dose difference of 3 %. Gamma analysis was applied for 20 treatment plans with the 1 arc VMAT technique, with the criterion of 3 mm/4 % according to TG 119, developed by the AAPM.
Acknowledgement:
This work was supported by The Department of Radiation Oncology from Clinical Hospital "Colțea", Bucharest, Romania.
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