DOSIMETRIC COMPARISON OF WATER AND COMPLETE EYE DEFINITION PHANTOMS FOR 125I AND103PD BRACHYTHERAPY PLAQUES

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DEHGHANNIA ROSTAMI ZOHREH; MASOUDI SEYED FARHAD; ASADI SOMAYEH

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Journal: IRANIAN JOURNAL OF MEDICAL PHYSICS Year:2011 | Volume:8 | Issue:2 (31) Page(s): 19-26

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Title

DOSIMETRIC COMPARISON OF WATER AND COMPLETE EYE DEFINITION PHANTOMS FOR 125I AND103PD BRACHYTHERAPY PLAQUES

Author(s)

DEHGHANNIA ROSTAMI ZOHREH | MASOUDI SEYED FARHAD | ASADI SOMAYEH | Issue Writer Certificate

Keywords

BRACHYTHERAPYQ3

DOSIMETRYQ2

MELANOMAQ1

MONTE CARLO SIMULATIONQ3

OPHTHALMIC PLAQUESQ3

Abstract

Introduction: In this paper, by complete definition of human eye containing the various parts and their materials, the difference between this model and a homogeneous water phantom are compared for two OPHTHALMIC PLAQUES using 125I and 103Pd.Material and methods: The simulation of the two phantoms were performed in the MCNP-4C code and by using the geometry of a three-dimensional eye, different parts of the eye including the lens, cornea, retina, choroid, sclera, anterior chamber, optic nerve and tumor were defined in the eye phantom. Also, for two ophthalmic BRACHYTHERAPY sources, 20 mm COMS plaques containing 24 125I or 103Pd sources were simulated. The depth dose and doses in different parts of the eye were calculated by using the *F8 tally in the MCNP code.Results: The results showed that the doses in different parts of the eye in the two phantoms were different and depended on the OPHTHALMIC PLAQUES. The dose increased in the tumor and decreased in some parts of the eye such as the lens.Discussion and Conclusion: Complete definition of human eye in simulation of ophthalmic BRACHYTHERAPY leads to better results. As the effects of eye definition are different in the tumor and healthy tissues, the results for the eye phantom provide more accurate information for calculation of treatment time and the type of ophthalmic BRACHYTHERAPY used.

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APA: Copy

DEHGHANNIA ROSTAMI, ZOHREH, MASOUDI, SEYED FARHAD, & ASADI, SOMAYEH. (2011). DOSIMETRIC COMPARISON OF WATER AND COMPLETE EYE DEFINITION PHANTOMS FOR ¹²⁵I AND¹⁰³PD BRACHYTHERAPY PLAQUES. IRANIAN JOURNAL OF MEDICAL PHYSICS, 8(2 (31)), 19-26. SID. https://sid.ir/paper/96968/en

Vancouver: Copy

DEHGHANNIA ROSTAMI ZOHREH, MASOUDI SEYED FARHAD, ASADI SOMAYEH. DOSIMETRIC COMPARISON OF WATER AND COMPLETE EYE DEFINITION PHANTOMS FOR ¹²⁵I AND¹⁰³PD BRACHYTHERAPY PLAQUES. IRANIAN JOURNAL OF MEDICAL PHYSICS[Internet]. 2011;8(2 (31)):19-26. Available from: https://sid.ir/paper/96968/en

IEEE: Copy

ZOHREH DEHGHANNIA ROSTAMI, SEYED FARHAD MASOUDI, and SOMAYEH ASADI, “DOSIMETRIC COMPARISON OF WATER AND COMPLETE EYE DEFINITION PHANTOMS FOR ¹²⁵I AND¹⁰³PD BRACHYTHERAPY PLAQUES,” IRANIAN JOURNAL OF MEDICAL PHYSICS, vol. 8, no. 2 (31), pp. 19–26, 2011, [Online]. Available: https://sid.ir/paper/96968/en

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