New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose Ratio
Breast cancer is one of the most common malignant diseases in women. After tumor mass surgery, radiation therapy is regularly taken into account the gold standard for the treatment. Kilo to Mega voltage photons have been suggested due to their characteristic depth dose build-up regime, reducing the...
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| Format: | Article |
| Language: | English |
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Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)
2023-07-01
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| Series: | Brazilian Journal of Radiation Sciences |
| Subjects: | |
| Online Access: | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2281 |
| _version_ | 1797785557547352064 |
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| author | Abdollah Khorshidi Mansour Ashoor |
| author_facet | Abdollah Khorshidi Mansour Ashoor |
| author_sort | Abdollah Khorshidi |
| collection | DOAJ |
| description |
Breast cancer is one of the most common malignant diseases in women. After tumor mass surgery, radiation therapy is regularly taken into account the gold standard for the treatment. Kilo to Mega voltage photons have been suggested due to their characteristic depth dose build-up regime, reducing the dose to the breast skin to a fraction of the maximum dose exposure. During treatment, mean glandular dose is commonly used as a criterion for identifying radiation risks. Here, two outlines in cubic-rectangular (CR) and cylindrical- taper (CT) outlines were modelled together with corresponding assumptions using Monte-Carlo simulation and the recorded absorbed dose ratio (ADR) values were compared via defined a positron source by 511 keV energy. The results showed that the amounts of absorption and scattering cross-sections next to the ADR amount decreased as the height of the CR outline decreased. The average dose ratio amount in the CR outline was reduced by about 96% compared to that in the CT outline. By increasing the positron source distance from the nipple, the ADR amounts decreased for both outlines. The amount of accumulated dose ratio decreased harshly in the CR outline rather than in the CT outline. This study can be useful to examine breast tissue deformity in treatment planning.
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| first_indexed | 2024-03-13T00:55:44Z |
| format | Article |
| id | doaj.art-05bf9bbb8af3454397a067f6ae70382e |
| institution | Directory Open Access Journal |
| issn | 2319-0612 |
| language | English |
| last_indexed | 2024-03-13T00:55:44Z |
| publishDate | 2023-07-01 |
| publisher | Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR) |
| record_format | Article |
| series | Brazilian Journal of Radiation Sciences |
| spelling | doaj.art-05bf9bbb8af3454397a067f6ae70382e2023-07-06T21:26:31ZengBrazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)Brazilian Journal of Radiation Sciences2319-06122023-07-0111310.15392/2319-0612.2023.2281New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose RatioAbdollah Khorshidi0Mansour Ashoor1Radiation Application Research School, Nuclear Science and Technology Research InstituteRadiation Application Research School, Nuclear Science and Technology Research Institute Breast cancer is one of the most common malignant diseases in women. After tumor mass surgery, radiation therapy is regularly taken into account the gold standard for the treatment. Kilo to Mega voltage photons have been suggested due to their characteristic depth dose build-up regime, reducing the dose to the breast skin to a fraction of the maximum dose exposure. During treatment, mean glandular dose is commonly used as a criterion for identifying radiation risks. Here, two outlines in cubic-rectangular (CR) and cylindrical- taper (CT) outlines were modelled together with corresponding assumptions using Monte-Carlo simulation and the recorded absorbed dose ratio (ADR) values were compared via defined a positron source by 511 keV energy. The results showed that the amounts of absorption and scattering cross-sections next to the ADR amount decreased as the height of the CR outline decreased. The average dose ratio amount in the CR outline was reduced by about 96% compared to that in the CT outline. By increasing the positron source distance from the nipple, the ADR amounts decreased for both outlines. The amount of accumulated dose ratio decreased harshly in the CR outline rather than in the CT outline. This study can be useful to examine breast tissue deformity in treatment planning. https://bjrs.org.br/revista/index.php/REVISTA/article/view/2281Positron radiationBreast cancerDeformityAbsorbed Dose ratio |
| spellingShingle | Abdollah Khorshidi Mansour Ashoor New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose Ratio Brazilian Journal of Radiation Sciences Positron radiation Breast cancer Deformity Absorbed Dose ratio |
| title | New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose Ratio |
| title_full | New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose Ratio |
| title_fullStr | New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose Ratio |
| title_full_unstemmed | New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose Ratio |
| title_short | New Deformity Outline on the Breast Radiation Therapy for diminishing Absorbed Dose Ratio |
| title_sort | new deformity outline on the breast radiation therapy for diminishing absorbed dose ratio |
| topic | Positron radiation Breast cancer Deformity Absorbed Dose ratio |
| url | https://bjrs.org.br/revista/index.php/REVISTA/article/view/2281 |
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