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Paper Information

Journal:   JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING   2018 , Volume 8 , Number 1; Page(s) 43 To 52.
 
Paper: 

MONTE CARLO SIMULATION OF ELECTRON BEAMS PRODUCED BY LIAC INTRAOPERATIVE RADIATION THERAPY ACCELERATOR

 
 
Author(s):  ROBATJAZI M., TANHA K., MAHDAVI S.R.*, BAGHANI H.R., MIRZAEI H.R., MOUSAVI M., NAFISSI N., AKBARI E.
 
* MEDICAL PHYSICS DEPARTMENT, IRAN UNIVERSITY OF MEDICAL SCIENCES, TEHRAN, IRAN
 
Abstract: 

Background: One of the main problems of dedicated IORT accelerators is to determine dosimetric characteristics of the electron beams. Monte Carlo simulation of IORT accelerator head and produced beam will be useful to improve the accuracy of beam dosimetry.
Materials and Methods: Liac accelerator head was modeled using the BEAMnrcMonte Carlo simulation system. Phase-space files were generated at the bottom of the applicators. These phase-space files were used as an input source in DOSXYZnrc and BEAMDP codes for dose calculation and analysis of the characteristic of the electron beams in all applicators and energies.
Results: The results of Monte Carlo calculations are in very close agreement with the measurements. There is a decrease in the peak of the initial spectrum when electrons come from the end of accelerator wave guide to the end of applicator. By decreasing the applicator diameter, the mean energy of electron beam decreased. Using applicators and increasing their size, X-ray contamination will increase. The percentage of X-ray contamination increases by applicator diameter. This is related to the increase of the mean energy of electron beams.
Conclusion: Application of PMMA collimator leads to, although well below accepted level, the production of bremsstrahlung. The results of this study showed that special design of LIAC head accompanying by PMMA collimator system cause to produce an electron beam with an individual dosimetric characteristic making it a useful tool for intraoperative radiotherapy purposes.

 
Keyword(s): MONTE CARLO SIMULATION, IORT, PHOTON CONTAMINATION, DOSIMETRY, LIAC
 
 
References: 
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Click to Cite.
APA: Copy

ROBATJAZI, M., & TANHA, K., & MAHDAVI, S., & BAGHANI, H., & MIRZAEI, H., & MOUSAVI, M., & NAFISSI, N., & AKBARI, E. (2018). MONTE CARLO SIMULATION OF ELECTRON BEAMS PRODUCED BY LIAC INTRAOPERATIVE RADIATION THERAPY ACCELERATOR. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING, 8(1), 43-52. https://www.sid.ir/en/journal/ViewPaper.aspx?id=570555



Vancouver: Copy

ROBATJAZI M., TANHA K., MAHDAVI S.R., BAGHANI H.R., MIRZAEI H.R., MOUSAVI M., NAFISSI N., AKBARI E.. MONTE CARLO SIMULATION OF ELECTRON BEAMS PRODUCED BY LIAC INTRAOPERATIVE RADIATION THERAPY ACCELERATOR. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING. 2018 [cited 2021May11];8(1):43-52. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570555



IEEE: Copy

ROBATJAZI, M., TANHA, K., MAHDAVI, S., BAGHANI, H., MIRZAEI, H., MOUSAVI, M., NAFISSI, N., AKBARI, E., 2018. MONTE CARLO SIMULATION OF ELECTRON BEAMS PRODUCED BY LIAC INTRAOPERATIVE RADIATION THERAPY ACCELERATOR. JOURNAL OF BIOMEDICAL PHYSICS AND ENGINEERING, [online] 8(1), pp.43-52. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=570555.



 
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