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Projection-data based temporal maximum attenuation computed tomography: determination of internal target volume for lung cancer against intra-fraction motion
https://repo.qst.go.jp/records/44839
https://repo.qst.go.jp/records/44839f9dba1bf-f806-4fc0-bc3b-2994a5f28724
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-05-02 | |||||
| タイトル | ||||||
| タイトル | Projection-data based temporal maximum attenuation computed tomography: determination of internal target volume for lung cancer against intra-fraction motion | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Mori, Shinichiro
× Mori, Shinichiro× Kanematsu, Nobuyuki× Asakura, Hiroshi× Endo, Masahiro× 森 慎一郎× 兼松 伸幸× 遠藤 真広 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The concept of internal target volume (ITV) is highly significant in radiotherapy for the lung, an organ which is hampered by organ motion. To date, different methods to obtain the ITV have been published and are therefore available. To define ITV, we developed new method by adapting a time filter to the four-dimensional CT scan technique (4DCT) that is projection-data processing [4D projection data maximum attenuation (4DPM)], and compared them with a reconstructed image processing [4D image maximum intensity projection (4DIM)] using a phantom and in clinical evaluations. 4DIM and 4DPM captured accurate maximum intensity volume (MIV) that is tumor encompassing volume, easily. Although 4DIM increased the CT number 1.8 times higher than 4DPM, 4DPM provided the original tumor CT number for MIV via a reconstruction algorithm. In the patient with lung fibrosis honeycomb, MIV with 4DIM is 0.7 cm larger than that for cine imaging in the cranio-caudal direction. 4DPM therefore provided an accurate MIV independent of patient characteristics and reconstruction conditions. These findings indicate the usefulness 4DPM in determining ITV in radiotherapy. | |||||
| 書誌情報 |
Physics in Medicine and Biology 巻 52, 号 4, p. 1027-1038, 発行日 2007-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0031-9155 | |||||
