書誌事項
- タイトル別名
-
- Potential Uncertainty about Image Registration in Thoracic Image-guided Radiotherapy
- 臨床技術 胸部の画像誘導放射線治療における画像照合の不確かさに関する検討
- リンショウ ギジュツ キョウブ ノ ガゾウ ユウドウ ホウシャセン チリョウ ニ オケル ガゾウ ショウゴウ ノ フ タシカ サ ニ カンスル ケントウ
この論文をさがす
説明
Purpose: Although image-guided radiotherapy (IGRT) is widely used to determine and correct daily setup errors, the additional interpretation for image registration would provide another error. We evaluated the uncertainty in image registration in IGRT. Method: The subjects consisted of 12 consecutive patients treated with IGRT for thoracic esophageal cancer. Two radiation therapists had consensually achieved daily 3D registration between planning computed tomography (CT) and cone beam CT (CBCT). The original data sets of image registration in all fractions except for boost irradiations with a change in the isocenter positions were selected for evaluation. There were 20 to 32 data sets for each patient: a total of 318 data sets. To evaluate daily setup errors, the mean 3D displacement vector was calculated for each patient. To assess the reproducibility of image registration, two other radiation therapists reviewed the data sets and recorded geometric differences as uncertainty in the image registration. Results: The mean 3D displacement vector for each patient ranged from 4.9 to 15.5 mm for setup errors and 0.7 to 2.2 mm for uncertainty in image registration. There was a positive correlation between the 3D vectors for setup error and uncertainty in image registration (r = 0.487, p = 0.016). Conclusion: Although IGRT can correct the setup errors, potential uncertainty exists in image registration. The setup error would disturb the image registration in IGRT.
収録刊行物
-
- 日本放射線技術学会雑誌
-
日本放射線技術学会雑誌 70 (11), 1311-1317, 2014
公益社団法人 日本放射線技術学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001206362452096
-
- NII論文ID
- 130004713506
-
- NII書誌ID
- AN00197784
-
- ISSN
- 18814883
- 03694305
-
- NDL書誌ID
- 025935808
-
- PubMed
- 25410339
-
- 本文言語コード
- ja
-
- 資料種別
- journal article
-
- データソース種別
-
- JaLC
- NDLサーチ
- Crossref
- PubMed
- CiNii Articles
- KAKEN
- OpenAIRE
-
- 抄録ライセンスフラグ
- 使用不可
