書誌事項
- タイトル別名
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- Relationship Between Image Quality and Signal Detectability in CR and FPD Systems
- CR ト FPD ニ オケル ガシツ ト シンゴウ ケンシュツノウ ノ カンケイ
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With the screen/film X-rays imaging system, Wakamatsu et al. reported that there was a close relationship between the square root of spectral signal-to-noise ratio area and sensitivity measure d’ in receiver operating characteristic (ROC) analysis. In this study, we investigated the relationship between image quality and signal detectability in two digital X-ray imaging systems using computed radiography (CR) and a flat panel detector (FPD). We used urethane resin balls with a diameter of 2 mm as a signal for cases samples in ROC analysis. In this experiment, the square root of the spectral signal-to-noise ratio area was closely related to d’ in ROC analysis in both digital X-ray imaging systems. In addition, when the exposure dose increased, signal detectability improved, but then saturated at one level. These results suggest that the exposure dose can be reduced when the optimal dose setting can be determined.
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 66 (11), 1449-1456, 2010
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390001206363186560
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- NII論文ID
- 10026964875
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 10921705
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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
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可