| Autor: |
Masaki Oshima, Naoto Shikama, Keisuke Usui, Shuko Nojiri, Akira Isobe, Yoichi Muramoto, Terufumi Kawamoto, Nanae Yamaguchi, Yasuo Kosugi, Keisuke Sasai |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Journal of radiation research. |
| ISSN: |
1349-9157 |
| Popis: |
We conducted a prospective study to quantitatively evaluate the movement of the chest wall to establish the simple and reproducible deep-inspiration breath-hold (DIBH) method. The left nipple position was monitored to confirm the inspiratory state. Planning computed tomography (CT) was performed under DIBH and free-breath. We conducted radiation plans with DIBH and free-breath CT and evaluated organ at risk (OAR) and target doses according to two different plans. The relationship between positioning errors of the chest wall and patient factors was evaluated using univariate analysis and fixed-effects models. Twenty-three patients aged ≤ 60 years were enrolled during January–August 2021; 358 daily radiation treatments were evaluated. The median time of treatment room occupancy was 16 minutes (interquartile range, 14–20). The area of the planning target volume (PTV) surrounded by the 95% isodose line was more extensive in DIBH than in free breathing (71.6% vs 69.5%, P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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