STUDY OF DIFFERENT TISSUE DENSITY EFFECTS ON THE DOSE DISTRIBUTION OF A 103PD BRACHYTHERAPY SOURCE MODEL MED3633

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MOWLAVI ALI ASGHAR; YAZDANI MAJED

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Journal: IRANIAN JOURNAL OF MEDICAL PHYSICS Year:2010 | Volume:7 | Issue:3 (28) Page(s): 55-62

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Title

STUDY OF DIFFERENT TISSUE DENSITY EFFECTS ON THE DOSE DISTRIBUTION OF A 103PD BRACHYTHERAPY SOURCE MODEL MED3633

Author(s)

MOWLAVI ALI ASGHAR | YAZDANI MAJED | Issue Writer Certificate

Keywords

DOSE DISTRIBUTIONQ3

MCNP4C CODEQ3

103PD SOURCEQ3

TISSUE DENSITY EFFECTQ3

Abstract

Introduction: Clinical application of encapsulated radioactive brachytherapy sources has a major role in cancer treatment. In the present research, the effects of different tissue densities on the DOSE DISTRIBUTION of a 103Pd brachytherapy source in a spherical phantom of 50 cm radius have been studied.Material and Methods: As is well known, absorbed dose in tissue depends to its density, but this difference is not clear in measurements. Therefore, we applied the MCNP code to evaluate the effect of density on the DOSE DISTRIBUTION. 103Pd brachytherapy sources are used to treat prostate, breast and other cancers.Results: Absorbed dose has been calculated and presented around a source placed in the center of the phantom for different tissue densities. Also, we derived anisotropy and radial dose functions and compared our Monte Carlo results with experimental results of Rivard and Li et al. for F (1, q) and g(r) in 1.040 g/cm3 tissue.Conclusion: The results of this study show that relative dose variations around the source center are very considerable at different densities, because of the presence of a photoabsorber (Au-Cu alloy) in the source core. Dose variation exceeds %80 at the point (Z=2.4 mm, Y=0 mm). Computed values of anisotropy and radial dose functions are in good agreement with the experimental results of Rivard and Li et al.

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APA: Copy

MOWLAVI, ALI ASGHAR, & YAZDANI, MAJED. (2010). STUDY OF DIFFERENT TISSUE DENSITY EFFECTS ON THE DOSE DISTRIBUTION OF A ¹⁰³PD BRACHYTHERAPY SOURCE MODEL MED3633. IRANIAN JOURNAL OF MEDICAL PHYSICS, 7(3 (28)), 55-62. SID. https://sid.ir/paper/96945/en

Vancouver: Copy

MOWLAVI ALI ASGHAR, YAZDANI MAJED. STUDY OF DIFFERENT TISSUE DENSITY EFFECTS ON THE DOSE DISTRIBUTION OF A ¹⁰³PD BRACHYTHERAPY SOURCE MODEL MED3633. IRANIAN JOURNAL OF MEDICAL PHYSICS[Internet]. 2010;7(3 (28)):55-62. Available from: https://sid.ir/paper/96945/en

IEEE: Copy

ALI ASGHAR MOWLAVI, and MAJED YAZDANI, “STUDY OF DIFFERENT TISSUE DENSITY EFFECTS ON THE DOSE DISTRIBUTION OF A ¹⁰³PD BRACHYTHERAPY SOURCE MODEL MED3633,” IRANIAN JOURNAL OF MEDICAL PHYSICS, vol. 7, no. 3 (28), pp. 55–62, 2010, [Online]. Available: https://sid.ir/paper/96945/en

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