| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-05-02 |
| タイトル |
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タイトル |
CONTRIBUTION OF ORGAN-BASED TUBE CURRENT MODULATION TO THE REDUCTION OF LENS EXPOSURE DOSE IN HEAD 4D CT IMAGING: A PHANTOM STUDY. |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Keisuke Nagamoto
Ryo Watanabe
Tomonori Kawachino
Yoshitaka Ohishi
Aina Yamamoto
Takashi Moritake
Shun-Ichi Nihei
Masayuki Kamochi
Naoki Kunugita
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The purpose of this study was to evaluate the effectiveness of organ effect modulation (OEM) in reducing the lens dose in 4D computed tomography (CT) of the head in volume-acquisition (NVA) mode. Six radiophotoluminescent dosemeters were placed on the head of a RANDO phantom. The doses absorbed by the organs and image noise change rate were determined. The lens doses without OEM (i.e. in the OEMoff case) were higher than those with the same target standard deviation and volume-computed tomography dose index (CTDIvol) as in the OEMoff case (p?<?0.01). The image noise change rate was 11%. OEM reduced the lens dose during head 4D CT imaging in the NVA mode by 18%. Furthermore, the feasibility of lens dose reduction while ensuring sufficient image quality was confirmed under the condition in which OEM was employed with the same CTDIvol as in the OEMoff case. |
| 書誌情報 |
Radiation protection dosimetry
巻 198,
号 18,
p. 1377-1386,
発行日 2022-09
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| 出版者 |
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出版者 |
Oxford University Press |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1742-3406 |
| PubMed番号 |
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識別子タイプ |
PMID |
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関連識別子 |
36062449 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1093/rpd/ncac179 |
