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  1. 学術雑誌論文
  2. 洋雑誌

Metal-induced streak artifact reduction using iterative reconstruction algorithms in X-ray CT image of the dento-alveolar region

https://kitami-it.repo.nii.ac.jp/records/7537
https://kitami-it.repo.nii.ac.jp/records/7537
47d2edbb-0672-444b-9fd9-27561ce7932e
名前 / ファイル ライセンス アクション
Dong_Hayakawa_etal_OOOOjournal_Feb2013-1.pdf Dong_Hayakawa_etal_OOOOjournal_Feb2013-1.pdf (2.2 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2013-02-27
タイトル
タイトル Metal-induced streak artifact reduction using iterative reconstruction algorithms in X-ray CT image of the dento-alveolar region
言語 en
言語
言語 eng
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

en Dong, Jian

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Hayakawa, Yoshihiko

× Hayakawa, Yoshihiko

en Hayakawa, Yoshihiko

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Kannenberg, Sven

× Kannenberg, Sven

en Kannenberg, Sven

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Kober, Comelia

× Kober, Comelia

en Kober, Comelia

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抄録
内容記述タイプ Abstract
内容記述 Objective: To reduce metal-induced streak artifact on oral and maxillofacial X-ray CT (computed tomography) images by developing the fast statistical image reconstruction system using iterative reconstruction algorithms.
Study design: Adjacent CT images often depict similar anatomical structures in thin slices. So firstly images were reconstructed using the same projection data of an artifact-free image. Secondly images were processed by the successive iterative restoration method where projection data was generated from reconstructed image in sequence. Besides the maximum likelihood-expectation maximization algorithm, the ordered subset-expectation maximization algorithm (OS-EM) was examined. Also small ROI setting and reverse processing were applied for improving performance.
Results: Both algorithms reduced artifacts instead of slightly decreasing gray levels. The OS-EM and small ROI reduced the processing duration without apparent detriments. Sequential and reverse processing didn’t show apparent effects.
Conclusions: Two alternatives in iterative reconstruction methods were effective for artifacts reduction. The OS-EM algorithm and small ROI setting improved the performance.
書誌情報 en : Oral surgery, oral medicine, oral pathology, oral radiology

巻 115, 号 2, p. 63-73, 発行日 2013-02
DOI
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.oooo.2012.07.436
出版者
出版者 Elsevier
言語 en
著者版フラグ
言語 en
値 author
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
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