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Accuracy of target delineation by positron emission tomography-based auto-segmentation methods after deformable image registration : A phantom study.
https://kagawa-u.repo.nii.ac.jp/records/7333
https://kagawa-u.repo.nii.ac.jp/records/733305c57b9b-9161-4825-8701-f9d4d52bcbcc
| 名前 / ファイル | ライセンス | アクション |
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本文 (4.5 MB)
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内容の要旨 (68.0 kB)
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審査の結果の要旨 (89.2 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-04-21 | |||||
| タイトル | ||||||
| タイトル | Accuracy of target delineation by positron emission tomography-based auto-segmentation methods after deformable image registration : A phantom study. | |||||
| 言語 | en | |||||
| 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_db06 | |||||
| 資源タイプ | doctoral thesis | |||||
| その他（別言語等）のタイトル | ||||||
| その他のタイトル | 画像変形位置合わせ後のPET画像に基づく自動輪郭描出法の標的描出精度 : ファントム研究 | |||||
| 言語 | ja | |||||
| 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 |
片山, 博貴
× 片山, 博貴 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Purpose: Diagnostic positron emission tomography and computed tomography (PET/CT) images can be fused to the planning CT images by a deformable image registration (DIR). The aim of this study was to evaluate the standardized uptake value (SUV) and target delineation on deformed PET images. | |||||
| 言語 | en | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Methods: We used a cylindrical phantom and removable inserts of four spheres (16-38 mm in diameter) and three ellipsoids with a volume equal to the 38-mm-diameter sphere (S38) in each. S38 was filled with 18F-fluorodeoxyglucose activity, and then PET/CT images were acquired. The contours of S38 were generated using original PET images by PET auto-segmentation (PET-AS) methods of (1) SUV2.5, (2) 40% of maximum SUV (SUV40%max), and (3) gradient-based (GB), and were deformed to the other inserts by DIR. We compared the volumes and the SUVmax with the generated contours using the deformed PET images. | |||||
| 言語 | en | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Results: The SUVmax was slightly decreased by DIR; the mean absolute difference was -0.10 ± 0.04. For SUV2.5 and SUV40%max, the differences in S38 volumes between the original and deformed PET images were less than 5%, regardless of deformation type. For the GB, the contoured volumes obtained from deformed PET images were larger than those of the original PET images for the deformation type of ellipsoids. When the S38 was deformed to the 16-mm-diameter sphere, the maximum volume difference was -22.8%. | |||||
| 言語 | en | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Conclusions: Although SUV fluctuations by DIR were negligible, the target delineation on deformed PET images by the GB should be carefully considered owing to the distortion of intensity profiles. | |||||
| 言語 | en | |||||
| 学位名 | ||||||
| 言語 | ja | |||||
| 学位名 | 博士（医学） | |||||
| 学位授与機関 | ||||||
| 学位授与機関識別子Scheme | kakenhi | |||||
| 学位授与機関識別子 | 16201 | |||||
| 言語 | ja | |||||
| 学位授与機関名 | 香川大学 | |||||
| 言語 | en | |||||
| 学位授与機関名 | Kagawa University | |||||
| 学位授与年月日 | ||||||
| 学位授与年月日 | 2021-03-24 | |||||
| 学位授与番号 | ||||||
| 学位授与番号 | 甲第767号 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | Copyright © 2020 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved. | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | Theses and dissertations which contain embedded PJAs as part of the formal submission can be posted publicly by the awarding institution with DOI links back to the formal publications on ScienceDirect. | |||||
| PubMed番号 | ||||||
| 識別子タイプ | PMID | |||||
| 関連識別子 | 32707483 | |||||
| 関連サイト | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.ejmp.2020.07.015 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | P | |||||
| 出版タイプResource | http://purl.org/coar/version/c_fa2ee174bc00049f | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Deformable image registration | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | PET auto-segmentation | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | PET/CT | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Treatment planning | |||||
