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Marker-less and calibration-less motion correction method for brain PET
https://repo.qst.go.jp/records/86006
https://repo.qst.go.jp/records/86006a564495e-8852-4d2d-8bf5-f65197645a77
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-04-19 | |||||
| タイトル | ||||||
| タイトル | Marker-less and calibration-less motion correction method for brain PET | |||||
| 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 |
Yuma, Iwao
× Yuma, Iwao× Go, Akamatsu× Hideaki, Tashima× Miwako, Takahashi× Taiga, Yamaya× Yuma, Iwao× Go, Akamatsu× Hideaki, Tashima× Miwako, Takahashi× Taiga, Yamaya |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Marker-less head motion correction methods have been well-studied, but no report has discussed potential issues in the positional calibration between a PET system and an external sensor. Here, we develop a method for positional calibration between the PET system and an external range sensor for practical head motion correction. The basic concept of the developed method involves using the subject’s face model as a marker not only for head motion detection but also for the system positional calibration. The subject’s face model, which can be easily obtained with the range sensor, can also be calculated from a computed tomography (CT) image of the same subject. By applying an appropriate matching algorithm between CT and PET images, the CT image, which is acquired separately for the purpose of attenuation correction in PET, has the same coordinates as the PET image. The proposed method was implemented in helmet-type PET and motion correction accuracy was assessed quantitatively using a mannequin head. The phantom experiments demonstrated the performance of the developed motion correction method; high-resolution images with no trace of the applied motion were obtained as if no motion had been given. Statistical analysis supported the visual assessment results in terms of the spatial resolution, contrast recovery, and uniformity, and the results implied that motion with correction slightly improved image quality compared with the motionless case. Tolerance of the developed method to potential tracking errors had at least a difference of 10 % in the amplitude of the rotation angle. | |||||
| 書誌情報 |
Radiological Physics and Technology 巻 15, 号 2, p. 125-134, 発行日 2022-03 |
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| 出版者 | ||||||
| 出版者 | Springer Singapore | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1865-0341 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1007/s12194-022-00654-6 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://link.springer.com/article/10.1007/s12194-022-00654-6 | |||||
