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アイテム
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Reduced Radiation Exposure to the Mammary Glands in Thoracic Computed Tomography using Organ-based Tube-current Modulation
https://showa.repo.nii.ac.jp/records/658
https://showa.repo.nii.ac.jp/records/658495b8f4a-72a8-4557-8e31-af7bdbffa7ec
名前 / ファイル | ライセンス | アクション |
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S25_49.pdf (866.8 kB)
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Item type | 学内発行雑誌 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2016-11-22 | |||||
タイトル | ||||||
タイトル | Reduced Radiation Exposure to the Mammary Glands in Thoracic Computed Tomography using Organ-based Tube-current Modulation | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ | departmental bulletin paper | |||||
著者 |
MUNECHIKA, Jiro
× MUNECHIKA, Jiro× OHGIYA, Yoshimitsu× GOKAN, Takehiko× HASHIMOTO, Toshi× IWAI, Tsugunori |
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書誌情報 |
The Showa University journal of medical sciences 巻 25, 号 1, p. 49-58, 発行日 2013-03 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Organ-based tube-current modulation has been used to reduce radiation exposure to specific organs. However, there are no reports yet published on reducing radiation exposure in clinical cases. In this study, we assessed the reduction in radiation exposure to the mammary glands during thoracic computed tomography (CT) using X-CARE. In a phantom experiment, the use of X-CARE reduced radiation exposure at the midline of the precordial region by a maximum of 45.1%. In our corresponding clinical study, CT was performed using X-CARE in 15 patients, and without X-CARE in another 15. Compared to the non-X-CARE group, radiation exposure was reduced in the X-CARE group at the midline of the precordial region by 22.3% (P < 0.05) and at the medial sides of the right and left breasts by 16.8% and 14.2%, respectively (P < 0.05 for each). Analysis of the visual quality of CT images as well as CT values for the muscles of the chest walls showed no difference in either assessment between the X-CARE and non-X-care groups (P > 0.05). X-CARE thus reduced radiation exposure at the midline of the precordial region and allowed us to obtain consistent CT values without increasing noise. However, this study revealed increases in radiation exposure at the lateral sides of the breasts. It is conceivable that patients' breasts were laterally displaced by gravity under the standard thoracic imaging conditions. Further studies that consider factors such as body size and adjustment of imaging conditions may be needed in the future. | |||||
DOI | ||||||
関連識別子 | 10.15369/sujms.25.49 | |||||
出版者 | ||||||
出版者 | Showa University Society | |||||
ISSN | ||||||
収録物識別子 | 0915-6380 | |||||
著者版フラグ | ||||||
出版タイプ | VoR |