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Successive iterative restoration applied to streak artifact reduction in X-ray CT image of dento-alveolar region
https://kitami-it.repo.nii.ac.jp/records/7525
https://kitami-it.repo.nii.ac.jp/records/75256ad035b7-942b-44dd-b93a-e2a61aaea895
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Dong etal_JCARSVol6No5 (2011)635-640.pdf (362.1 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2012-06-12 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Successive iterative restoration applied to streak artifact reduction in X-ray CT image of dento-alveolar region | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | X-ray CT image | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Iterative restoration | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Streak artifact reduction | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Dento-alveolar imaging | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Maxillofacial imaging | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| タイプ | journal article | |||||||||||||
| アクセス権 | ||||||||||||||
| アクセス権 | open access | |||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||
| 著者 |
Dong, Jian
× Dong, Jian
× Kondo, Atsushi
× Abe, Kosuke
× Hayakawa, Yoshihiko
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | Purpose: X-ray computed tomography (CT) images in the dento-alveolar region are sometimes rendered unusable for diagnostic purposes due to the appearance of streak artifacts. The purpose of the study is to reduce streak artifacts appeared on dental and maxillofacial X-rayCT images by the application of modified iterative restoration method. Methods: We took advantage of the aspect that adjacent CT images often depict very similar anatomical structures within the resulting collection of thin-slice images. CT images having streak artifacts were processed using the projection data of adjacent CT images. A modified iterative correction, the maximum likelihood-expectation maximization (ML-EM) reconstruction algorithm, was employed to reduce the streak artifact caused by metallic materials in the oral cavity. It approximates between the processed image and the original projection data. First, the projection data of an intact image were obtained, and then, the next image that had streak artifacts was processed. The projection data of the processed image were obtained, and the ML-EM method was applied to the next image again. Then, the successive iterative restoration was carried out. Results: Twelve adjacent images were processed. Each iterative restoration was carried out fifty times. Streak artifacts were observed on processed images at the initial stage, but some of them either suppressed or disappeared as the iteration progressed. Conclusions: The modified ML-EM method was effective to reduce streak artifacts in X-ray CT images in dento-alveolar region. |
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| 書誌情報 |
International Journal of Computer Assisted Radiology and Surgery 巻 6, 号 5, p. 635-640, 発行日 2011 |
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| DOI | ||||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | http://doi.org/10.1007/s11548-010-0544-2 | |||||||||||||
| 出版者 | ||||||||||||||
| 出版者 | Springer | |||||||||||||
| 言語 | en | |||||||||||||
| 著者版フラグ | ||||||||||||||
| 言語 | en | |||||||||||||
| 値 | author | |||||||||||||
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| 出版タイプ | AM | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||
