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Comparison of anti-scatter grids for digital imaging with use of a direct-conversion flat-panel detector
http://hdl.handle.net/2297/30544
http://hdl.handle.net/2297/30544a6b7ebc1-c514-48c0-8413-55e72d5bd83f
名前 / ファイル | ライセンス | アクション |
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ME-PR-MIZUTA-M-46.pdf (326.2 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Comparison of anti-scatter grids for digital imaging with use of a direct-conversion flat-panel detector | |||||
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_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Mizuta, Masayoshi
× Mizuta, Masayoshi× Sanada, Shigeru× Akazawa, Hiroyuki× Kasai, Toshifumi× Abe, Shuji× Ikeno, Yasuhiro× Mitou, Shigeki |
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書誌情報 |
Radiological Physics and Technology 巻 5, 号 1, p. 46-52, 発行日 2012-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1865-0333 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12236881 | |||||
出版者 | ||||||
出版者 | Springer Verlag / Japan Society of Medical Physics (JSMP) = 日本放射線技術学会 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Our purpose in this study was to establish a selection standard for anti-scatter grids for a direct conversion flat-panel detector (FPD) system. As indices for grid evaluation, we calculated the selectivity, Bucky factor, and the signal-to-noise ratio improvement factor (SIF) by measuring rates of scatter transmission, primary transmission, and total transmission (based on the digitally displayed measurement values of the FPD system), using 4 acrylic phantoms of different thicknesses. The results showed that the SIF was less than 1.0 when the phantom thickness was 5 cm. When the phantom thickness was 25 cm and the grid ratio was 16:1, the SIF was 1.505 and 1.518 (maximum value) at 90 and 120 kV, respectively. Compared with the grid ratio of 12:1, the SIF at the grid ratio 16:1 was improved by 6.1% at 90 kV, and by 7.0% at 120 kV. In a direct-conversion FPD system, the grid ratio of 16:1 is considered adequate for eliminating the scattered-radiation effect when much scattered radiation is present, such as with a thick imaged object or a high X-ray tube voltage. © Japanese Society of Radiological Technology and Japan Society of Medical Physics 2011. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Thesis of Mizuta, Masayoshi / 水田 正芳 博士学位論文(金沢大学 / 大学院医薬保健学総合研究科) | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.jsrt.or.jp/ |