Modeling of Dual Head Gantry Radiotherapy System with Monte Carlo Simulation
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In order to design a dual-head gantry radiotherapy system, the single head of LINAC was modeled using GATE as a preliminary study. The LINAC head was designed with VARIAN manufacturer’s information. 6 MV photons were generated from the head and the photons w irradiated to a water phantom for beam evaluation. GATE simulation was segmented by two stages, the one was to generate X-ray spectrum and the other one was for irradiation X-ray to the water phantom. The quantitative results were described in Percentage depth dose and beam profile. Two field size conditions were employed as 5 × 5 and 10 × 10㎠. After beam quality was verified, dual heads gantry radiotherapy system were simulated and they was compared to the single head of LINAC system in terms of dose deposition with in the phantom. The simulated LINAC head showed acceptable beam quality result for radiotherapy. The efficiency was calculated that deposited dose from dual heads was divided by the dose from single head. At all conditions, dual heads showed higher treatment efficiency. Efficiency was increased about 40 to 60%. Form the result, The dual head gantry system of new LINAC system will contribute to the practical radiotherapy of tumor and to reduce treatment time.
Abstract
In order to design a dual-head gantry radiotherapy system, the single head of LINAC was modeled using GATE as a preliminary study. The LINAC head was designed with VARIAN manufacturer’s information. 6 MV photons were generated from the head and the photons w irradiated to a water phantom for beam evaluation. GATE simulation was segmented by two stages, the one was to generate X-ray spectrum and the other one was for irradiation X-ray to the water phantom. The quantitative results were described in Percentage depth dose and beam profile. Two field size conditions were employed as 5 × 5 and 10 × 10㎠. After beam quality was verified, dual heads gantry radiotherapy system were simulated and they was compared to the single head of LINAC system in terms of dose deposition with in the phantom. The simulated LINAC head showed acceptable beam quality result for radiotherapy. The efficiency was calculated that deposited dose from dual heads was divided by the dose from single head. At all conditions, dual heads showed higher treatment efficiency. Efficiency was increased about 40 to 60%. Form the result, The dual head gantry system of new LINAC system will contribute to the practical radiotherapy of tumor and to reduce treatment time.
참고문헌 (15)
- Thariat J, "Past. present and future of radiotherapy for the benefit of patent", Nat. Rev. Clin. Oncol, 10(1), pp.52~60 (2013)
- Sorcini B, "Clinical application of image-guided radiotherapy, IGRT(on the Varian OBI platform)", Caner Radiother, 10(5), pp.252~257 (2006)
- Shimizu S, "Detection of lung tumor movement in real-time tumor-tracking radiotherapy", Int. J Radiat. Oncol. Biol. Phys, 51(2), pp.304~310 (2000)
- Chang SD, "An analysis of the accuracy of the cyberknife : a robotic frameless stereotacitc radiosurgical system", Neurosurgery, 52(1), pp.140~146 (2003)
- Yu CX, "Intensity-modulated arc therapy with dynamic mulfileaf collimation: an alterative to tomotherapy", Phys. Med. Biol, 40(9), pp.1449~ (1995)
- Ling CC, "Commissioning and quality assurance of RapidArc radiotherapy delivery system", Int. J Radiat. Oncol. Biol. Phys., 72(2), pp.575~581 (2008)
- Lee S, "X-band Linac for a 6 MeV dual-head radiation therapy gantry", Nuclear Instruments and Methods in Physics Research A, 852(21), pp.40~45 (2017)
- Grevillot L, "Simulation of a 6 MV Elekta Precise Linac photon beam using GATE", GEANT4, 2011, pp.56(4), 903~918
- Lourenco B, "Intensity-modulated arc therapy using the gate Monte Carlo simulation platform in a grid environment", Physica Medica, 29(1), pp.e24~ (2013)
- Kim HK, "Monte Carlo Simulation of the Photon Beam Characteristics from Medical Linear Accelerators", Radiation Protection Dosimetry, 119(1-4), pp.510~513 (2006)
- 한수철, "진단용 다엽콜리메이터 개발을 위한 몬테칼로 시뮬레이션 연구", 방사선기술과학, 39(4), pp.595~600 (2016), 대한방사선과학회[DOI]
- Verhaeven F, "Monte Carlo modeling of radiotherapy KV x-ray unit", Phys. Med. Biol, 44(7), pp.1769~1789 (1999)
- Fix MK, "Monte Carlo source model for photon beam radiotherapy: photon source characteristics", Med. Phys, 31(11), pp.3106~3121 (2004)
- Bush K, "Monte Carlo simulation of Rapidarc radiotherapy delivery", Phys. Med. Biol, 53(19), pp.N359~N370 (2008)
- Sarrut D, "A review of the use and potential of the GATE Monte Carlo simulation code for radiotherapy and dosimetry applications", Med. Phys, 41(6), pp.064301~ (2014)