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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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  1. 学位論文
  2. 博士論文
  3. 医学研究科
  1. 部局別インデックス
  2. 医学研究科

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/20.500.12000/0002019516
fed07d92-e607-4055-b58d-613643bd220c
名前 / ファイル ライセンス アクション
iken522abstract.pdf iken522abstract.pdf (906 KB)
iken522review.pdf iken522review.pdf (1 MB)
Item type 琉球大学リポジトリ登録用アイテムタイプ(1)
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

ja 中山, 有香

Search repository
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.
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
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