3D dose distribution calculation in a voxelized human phantom by means of Monte Carlo method

The combination of 192 Ir seed with the Leipzig applicators is used in a considerable number of clinical trials for skin cancer treatment. As is known, the beneficial effects of ionizing radiation for tumor treatment depends on the dosimetry accuracy. Nowadays, dosimetry calculations are supported by the characteristics provided by the manufacturer, which have been obtained from measurements with an ionization chamber in a phantom. Despite their benefit, the experimental data involves errors related to the positioning, energy, and angular dependence of the detectors. Thus, in order to get a detailed and more accurate dosimetry, the Monte Carlo code MCNP4C2 — Monte Carlo Neutron Particle, 4C2 version — has been employed to analyze the dose distribution in depth and at the surface in the skin cancer treatment using Leipzig applicators. On the other hand, some different measurements have been taken to validate the method and compare results. The results for this material of phantom (the skin with 0.5 cm thick over infinite soft tissue) can be used in treatment planning systems and also for computation of model dependent parameters like anisotropy dose function.

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Dose Distribution in a Human Voxel Phantom Due to Diagnostic X-rays Calculated by Means of the Monte Carlo Method.

Japanese Journal of Health Physics ◽

10.5453/jhps.29.411 ◽

1994 ◽

Vol 29 (4) ◽

pp. 411-416 ◽

Cited By ~ 4

Author(s):

Hideki KATO ◽

Masatoshi TSUZAKA ◽

Shuji KOYAMA ◽

Shoichi SUZUKI ◽

Takeo ORITO ◽

...

Keyword(s):

Monte Carlo ◽

Monte Carlo Method ◽

Dose Distribution ◽

X Rays ◽

Voxel Phantom ◽

The Monte Carlo Method

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Comparison of absorbed dose distribution 10 MV photon beam on water phantom using Monte Carlo method and Analytical Anisotropic Algorithm

Journal of Physics Conference Series ◽

10.1088/1742-6596/1090/1/012049 ◽

2018 ◽

Vol 1090 ◽

pp. 012049

Author(s):

Ridwan Ramdani ◽

Freddy Haryanto ◽

Yudha Satya Perkasa

Keyword(s):

Monte Carlo ◽

Monte Carlo Method ◽

Dose Distribution ◽

Absorbed Dose ◽

Photon Beam ◽

Water Phantom ◽

Analytical Anisotropic Algorithm

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Application of Monte-Carlo Code to dose distribution calculation in a case of lung cancer by the emitted photon beams from Linear Accelerator

Nuclear Science and Technology ◽

10.53747/jnst.v5i4.205 ◽

2015 ◽

Vol 5 (4) ◽

pp. 39-44

Author(s):

Thanh Xuan Le ◽

Cam Thu Nguyen Thi ◽

Van Nghia Tran ◽

Hong Loan Truong Thi ◽

Thanh Nhon Vo

Keyword(s):

Lung Cancer ◽

Monte Carlo ◽

General Hospital ◽

Treatment Planning ◽

Dose Distribution ◽

Linear Accelerator ◽

Treatment Plan ◽

Monte Carlo Code ◽

Photon Beams ◽

Distribution Calculation

The dose distribution calculation is one of the major steps in radiotherapy. In this paper the Monte Carlo code MCNP5 has been applied for simulation 15MV photon beams emitted from linear accelerator in a case of lung cancer of the General Hospital of Kien Giang. The settings for beam directions, field sizes and isocenter position used in MCNP5 must be the same as those in treatment plan at the hospital to ensure the results from MCNP5 are accurate. We also built a program CODIM by using MATLAB® programming software. This program was used to construct patient model from lung CT images obtained from cancer treatment cases at the General Hospital of Kien Giang and then MCNP5 code was used to simulate the delivered dose in the patient. The results from MCNP5 show that there is a difference of 5% in comparison with Prowess Panther program – a semi-empirical simulation program which is being used for treatment planning in the General Hospital of Kien Giang. The success of the work will help the planners to verify the patient dose distribution calculated from the treatment planning program being used at the hospital.

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