Influence of respiration on dose calculation in stereotactic body radiotherapy of the lung
この論文をさがす
抄録
Our purpose in this study was to evaluate the variation in calculated doses caused by respiration in stereotactic body radiotherapy (SBRT) of the lung. The study targeted ten patients who underwent SBRT for lung tumors. CT images were acquired during free breathing and in the inhalation and exhalation phases. We compared the CT image at inhalation with the image at exhalation so as to measure the change in lung volume, variation in the CT value, and displacement of the chest wall. The lung volume change was shown to be correlated with the maximum of the chest wall motion and with the variation in the CT value. A statistically significant difference was observed in the CT values between inhalation and exhalation (p < 0.05). The total dose variation at the isocenter was confined within ±2 %. However, the dose from individual beams can vary significantly when the chest wall moves more than 10 mm in natural breathing.
収録刊行物
-
- Radiological physics and technology
-
Radiological physics and technology 7 (2), 284-289, 2014-07
Springer
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1050002212667713408
-
- NII論文ID
- 120006809250
-
- NII書誌ID
- AA12236881
-
- ISSN
- 18650341
- 18650333
-
- HANDLE
- 2115/76939
-
- 本文言語コード
- en
-
- 資料種別
- journal article
-
- データソース種別
-
- IRDB
- CiNii Articles