Surface guided 3DCRT in deep-inspiration breath-hold for left sided breast cancer radiotherapy : implementation and first clinical experience in Iran
(2022) In Reports of Practical Oncology and Radiotherapy 27(5). p.881-896- Abstract
Background: The aim of the study is to evaluate the overall accuracy of the surface-guided radiotherapy (SGRT) workflow through a comprehensive commissioning and quality assurance procedures and assess the potential benefits of deep-inspiration breath-hold (DIBH) radiotherapy as a cardiac and lung dose reduction approach for left-sided breast cancer irradiation. Materials and methods: Accuracy and reproducibility of the optical surface scanner used for DIBH treatment were evaluated using different phantoms. Patient positioning accuracy and reproducibility of DIBH treatment were evaluated. Twenty patients were studied for treatment plan quality in target dose coverage and healthy organ sparing for the two different treatment techniques.... (More)
Background: The aim of the study is to evaluate the overall accuracy of the surface-guided radiotherapy (SGRT) workflow through a comprehensive commissioning and quality assurance procedures and assess the potential benefits of deep-inspiration breath-hold (DIBH) radiotherapy as a cardiac and lung dose reduction approach for left-sided breast cancer irradiation. Materials and methods: Accuracy and reproducibility of the optical surface scanner used for DIBH treatment were evaluated using different phantoms. Patient positioning accuracy and reproducibility of DIBH treatment were evaluated. Twenty patients were studied for treatment plan quality in target dose coverage and healthy organ sparing for the two different treatment techniques. Results: Reproducibility tests for the surface scanner showed good stability within 1 mm in all directions. The maximum position variation between applied shifts on the couch and the scanner measured offsets is 1 mm in all directions. The clinical study of 200 fractions showed good agreement between the surface scanner and portal imaging with the isocenter position deviation of less than 3 mm in each lateral, longitudinal, and vertical direction. The standard deviation of the DIBH level showed a value of < 2 mm during all evaluated DIBHs. Compared to the free breathing (FB) technique, DIBH showed significant reduction of 48% for heart mean dose, 43% for heart V25, and 20% for ipsilateral lung V20. Conclusion: Surface-guided radiotherapy can be regarded as an accurate tool for patient positioning and monitoring in breast radiotherapy. DIBH treatment are considered to be effective techniques in heart and ipsilateral lung dose reductions for left breast radiotherapy.
(Less)
- author
- Abdollahi, Sara ; Yazdi, Mohammad Hadi Hadizadeh ; Mowlavi, Ali Asghar ; Ceberg, Sofie LU ; Aznar, Marianne Camille ; Tabrizi, Fatemeh Varshoee ; Salek, Roham ; Ghodsi, Alireza and Jamali, Farideh
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cardiac sparing, Dibh, Motion management, Surface imaging
- in
- Reports of Practical Oncology and Radiotherapy
- volume
- 27
- issue
- 5
- pages
- 16 pages
- publisher
- Via Medica
- external identifiers
-
- scopus:85141763921
- ISSN
- 1507-1367
- DOI
- 10.5603/rpOr.a2022.0103
- language
- English
- LU publication?
- yes
- id
- 2aa1a694-00f3-4b85-a948-5b956cefdf4a
- date added to LUP
- 2022-12-05 12:56:32
- date last changed
- 2023-12-22 16:42:35
@article{2aa1a694-00f3-4b85-a948-5b956cefdf4a,
abstract = {{<p>Background: The aim of the study is to evaluate the overall accuracy of the surface-guided radiotherapy (SGRT) workflow through a comprehensive commissioning and quality assurance procedures and assess the potential benefits of deep-inspiration breath-hold (DIBH) radiotherapy as a cardiac and lung dose reduction approach for left-sided breast cancer irradiation. Materials and methods: Accuracy and reproducibility of the optical surface scanner used for DIBH treatment were evaluated using different phantoms. Patient positioning accuracy and reproducibility of DIBH treatment were evaluated. Twenty patients were studied for treatment plan quality in target dose coverage and healthy organ sparing for the two different treatment techniques. Results: Reproducibility tests for the surface scanner showed good stability within 1 mm in all directions. The maximum position variation between applied shifts on the couch and the scanner measured offsets is 1 mm in all directions. The clinical study of 200 fractions showed good agreement between the surface scanner and portal imaging with the isocenter position deviation of less than 3 mm in each lateral, longitudinal, and vertical direction. The standard deviation of the DIBH level showed a value of < 2 mm during all evaluated DIBHs. Compared to the free breathing (FB) technique, DIBH showed significant reduction of 48% for heart mean dose, 43% for heart V25, and 20% for ipsilateral lung V20. Conclusion: Surface-guided radiotherapy can be regarded as an accurate tool for patient positioning and monitoring in breast radiotherapy. DIBH treatment are considered to be effective techniques in heart and ipsilateral lung dose reductions for left breast radiotherapy.</p>}},
author = {{Abdollahi, Sara and Yazdi, Mohammad Hadi Hadizadeh and Mowlavi, Ali Asghar and Ceberg, Sofie and Aznar, Marianne Camille and Tabrizi, Fatemeh Varshoee and Salek, Roham and Ghodsi, Alireza and Jamali, Farideh}},
issn = {{1507-1367}},
keywords = {{Cardiac sparing; Dibh; Motion management; Surface imaging}},
language = {{eng}},
number = {{5}},
pages = {{881--896}},
publisher = {{Via Medica}},
series = {{Reports of Practical Oncology and Radiotherapy}},
title = {{Surface guided 3DCRT in deep-inspiration breath-hold for left sided breast cancer radiotherapy : implementation and first clinical experience in Iran}},
url = {{http://dx.doi.org/10.5603/rpOr.a2022.0103}},
doi = {{10.5603/rpOr.a2022.0103}},
volume = {{27}},
year = {{2022}},
}