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Thirty-three consecutive patients who underwent chest CT by a U-HRCT scanner were enrolled. In each\npatient, CT data were reconstructed by two different protocols: 512 x 512 matrix with 0.5-mm slice thickness (conventional\nHRCT mode) and 1024x 1024 matrix with 0.25-mm slice thickness (U-HRCT mode). We used a research workstation to\ncompare the two CT modes with regard to the numbers and total lengths of the automatically segmented bronchi.Results Significantly greater numbers and longer lengths of peripheral bronchi were segmented in the U-HRCT mode than\nin the conventional HRCT mode (P \u003c 0.001, for fifth-to eighth-generation bronchi). For example, the mean numbers and\ntotal lengths of the sixth-generation bronchi were 81 and 1048 mm in the U-HRCT mode and 59 and 538 mm in the conventional\nHRCT mode.Conclusions The U-HRCT mode greatly improves automatic airway segmentation for the more peripheral bronchi, compared\nwith the conventional HRCT mode. 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超高精細CTにおける気管支自動抽出能の検討: 1024マトリクスと0.25mm スライス厚を用いた画像化による進歩
http://hdl.handle.net/20.500.12000/0002019516
http://hdl.handle.net/20.500.12000/0002019516fed07d92-e607-4055-b58d-613643bd220c
名前 / ファイル | ライセンス | アクション |
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Item type | 琉球大学リポジトリ登録用アイテムタイプ(1) | |||||||
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公開日 | 2022-08-31 | |||||||
タイトル | ||||||||
タイトル | Automatic bronchial segmentation on ultra-HRCT scans: advantage of the 1024-matrix size with 0.25-mm slice thickness reconstruction | |||||||
言語 | en | |||||||
タイトル | ||||||||
タイトル | 超高精細CTにおける気管支自動抽出能の検討: 1024マトリクスと0.25mm スライス厚を用いた画像化による進歩 | |||||||
言語 | ja | |||||||
作成者 |
中山, 有香
× 中山, 有香
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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 | |||||||
主題 | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | Ultra-high-resolution computed tomograph | |||||||
主題 | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | Bronchu | |||||||
主題 | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | Airway segmentatio | |||||||
主題 | ||||||||
言語 | en | |||||||
主題Scheme | Other | |||||||
主題 | Quantitative measurement | |||||||
内容記述 | ||||||||
内容記述タイプ | Abstract | |||||||
内容記述 | Purpose The aim of this study was to evaluate the advantages of ultra-high-resolution computed tomography (U-HRCT) for automatic bronchial segmentation.Materials and methods This retrospective study was approved by the Institutional Review Board, and written informed consent was waived. Thirty-three consecutive patients who underwent chest CT by a U-HRCT scanner were enrolled. In each patient, CT data were reconstructed by two different protocols: 512 x 512 matrix with 0.5-mm slice thickness (conventional HRCT mode) and 1024x 1024 matrix with 0.25-mm slice thickness (U-HRCT mode). We used a research workstation to compare the two CT modes with regard to the numbers and total lengths of the automatically segmented bronchi.Results Significantly greater numbers and longer lengths of peripheral bronchi were segmented in the U-HRCT mode than in the conventional HRCT mode (P < 0.001, for fifth-to eighth-generation bronchi). For example, the mean numbers and total lengths of the sixth-generation bronchi were 81 and 1048 mm in the U-HRCT mode and 59 and 538 mm in the conventional HRCT mode.Conclusions The U-HRCT mode greatly improves automatic airway segmentation for the more peripheral bronchi, compared with the conventional HRCT mode. This advantage can be applied to routine clinical care, such as virtual bronchoscopy and automatic lung segmentation. |
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言語 | en | |||||||
出版者 | ||||||||
言語 | ja | |||||||
出版者 | 琉球大学 | |||||||
言語 | ||||||||
言語 | eng | |||||||
資源タイプ | ||||||||
資源タイプ | doctoral thesis | |||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
出版タイプ | ||||||||
出版タイプ | VoR | |||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
学位授与番号 | ||||||||
学位授与番号 | 甲第522号 | |||||||
学位名 | ||||||||
学位名 | 博士(医学) | |||||||
言語 | ja | |||||||
学位授与年月日 | ||||||||
学位授与年月日 | 2022-03-23 | |||||||
学位授与機関 | ||||||||
学位授与機関識別子 | 18001 | |||||||
学位授与機関識別子Scheme | kakenhi | |||||||
学位授与機関名 | 琉球大学 | |||||||
言語 | ja |