Estimation of Entrance Skin Dose from Fluoroscopy for Tracking Fiducial Markers during Real-time Tumor-tracking Radiotherapy-Simulation with a Sine Wave Respiration Model-
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- Kawakubo Masateru
- Division of Radiology, Department of Medical Technology, Kyushu University Hospital
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- Yasui Kenichiro
- Department of Radiology, Yamaguchi University Hospital
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- Kanzaki Ryuji
- Department of Radiology, Yamaguchi University Hospital
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- Oishi Yona
- Department of Radiology, Yamaguchi University Hospital
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- Sanada Taizo
- Department of Radiology, Yamaguchi University Hospital
Bibliographic Information
- Other Title
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- 動体追跡照射における体内マーカ追跡用透視X線による皮膚入射線量の推定‐正弦波呼吸モデルによるシミュレーション‐
- 臨床技術 動体追跡照射における体内マーカ追跡用透視X線による皮膚入射線量の推定--正弦波呼吸モデルによるシミュレーション
- リンショウ ギジュツ ドウタイ ツイセキ ショウシャ ニ オケル タイナイ マーカ ツイセキヨウ トウシ Xセン ニ ヨル ヒフ ニュウシャセンリョウ ノ スイテイ セイゲンハ コキュウ モデル ニ ヨル シミュレーション
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Description
The real-time tumor-tracking radiotherapy system includes two sets of fluoroscopes that detect the fiducial markers in or near the tumor constantly during radiotherapy. The treatment beam is irradiated to the tumor only when fiducial markers are located in the target position. Treatment time is extended in case of large respiratory tumor motion. A high-power fluoroscopic X-ray is required in the case of fiducial markers in parenchymal organs with heavy X-ray attenuation. It was a concern that radiodermatitis was caused by an increasing entrance skin dose from the fluoroscopic X-ray. In order to estimate the entrance skin dose from the fluoroscopic X-ray, we measured the entrance skin dose rate through the use of a method recommended by the Japanese Society of Radiological Technology. We applied sine wave simulation to resemble the respiratory motion of the tumor. In conclusion, we confirm that entrance skin dose from fluoroscopy during RTRT is lower than the threshold dose for radiodermatitis.
Journal
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- Japanese Journal of Radiological Technology
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Japanese Journal of Radiological Technology 65 (4), 456-461, 2009
Japanese Society of Radiological Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001206361724928
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- NII Article ID
- 10025976586
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- NII Book ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL BIB ID
- 10285577
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed