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Time-delay correction method for PET-based tumor tracking
https://repo.qst.go.jp/records/47124
https://repo.qst.go.jp/records/47124e9b6cf54-de0c-454e-ab0b-0c664f307e50
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-04-28 | |||||
| タイトル | ||||||
| タイトル | Time-delay correction method for PET-based tumor tracking | |||||
| 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 |
Shinaji, Tetsuya
× Shinaji, Tetsuya× Tashima, Hideaki× Yoshida, Eiji× Yamaya, Taiga× Ohnishi, Takashi× Haneishi, Hideaki× 品地 哲弥× 田島 英朗× 吉田 英治× 山谷 泰賀× 大西 峻× 羽石 秀昭 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The world’s first open-type positron emission tomography (PET), named OpenPET, is being developed at the National Institute of Radiological Sciences, Japan. We are aiming to employ the OpenPET in radiotherapy and to track the respiratory motion of a tumor in the thoracoabdominal region of a patient. By using PET images, we expect that the tumor itself can be directly visualized without using radio-opaque markers. Our demonstration results using a small prototype OpenPET system showed that the system can output reconstructed images at about two frames per second with about a 2-s delay; this delay ismainly due to the reconstruction calculation time. In this paper, we developed a time-delay correction method for tumor tracking for the OpenPET. Since it is difficult to correct the time delay using only the tumor location at 2 s before, we assumed the introduction of another high-speed sensor to acquire the respiration phase for correction. In the proposed method, the relationship between the tumor motion and the additional sensor output signal is calculated by support vector regression and the time delay is corrected by using the obtained regression line.We simulated this time-delay correction method with computer-generated PET images which had actual respiration motions obtained from clinical magnetic resonance imaging. As a result, we could track the tumor with 1.20± 0.91 mm mean error when we assumed the use of a belt-type respiratory motion sensor. |
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| 書誌情報 |
IEEE Transactions on Nuclear Science 巻 61, 号 6, p. 3711-3720, 発行日 2014-12 |
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| 出版者 | ||||||
| 出版者 | IEEE | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00189499 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1109/TNS.2014.2364047 | |||||
