書誌事項
- タイトル別名
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- Image Quality and Detection Performance of a Direct Digital Radiography System
- チョクセツガタ FPD ノ ガシツ トクセイ ト ケンシュツ トクセイ
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抄録
The physical characteristics of a direct amorphous Selenium (a-Se) digital fluoroscopy and radiography system were investigated. Pre-sampled modulation transfer functions (MTF) were measured using a slit method. Noise power spectra were determined for different input exposures by fast Fourier transform of uniformly exposed samples. The MTFs of direct digital radiography systems showed significantly higher values than those of indirect digital radiography and screen-film systems. The direct digital radiography systems showed higher noise levels compared with those of indirect systems under roughly the same exposure conditions. Contrast-detail analysis was performed to compare detection by direct digital radiography systems with that of the screen-film (FUJI HG-M2/UR2) systems. The average contrast-detail curves of digital and film images were obtained from the results of observation. Image quality figures (IQF) were also calculated from the individual observer performance tests. The results indicated that digital contrast-detail curves and IQF are, on average, are equal those of the screen-film system.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 62 (3), 425-433, 2006
公益社団法人 日本放射線技術学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001206362074880
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- NII論文ID
- 110004709701
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- NII書誌ID
- AN00197784
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- COI
- 1:STN:280:DC%2BD287psl2ntQ%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 7891807
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- PubMed
- 16604048
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
