書誌事項
- タイトル別名
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- Evaluation of Low Contrast Resolution Using Contrast-to-noise Ratio in CT
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説明
We evaluated low contrast resolution in CT images from various apparatuses by using the second recommendation of the x-ray CT commission. This method is based on visual assessment by an observer using a CT performance evaluation phantom. We evaluated CT images with low contrast resolution using the contrast-to-noise ratio (CNR) in terms of quantity of data, region of interest (ROI) size, and the relation between the second recommendation and CNR, and compared various kinds of machines according to CNR. We found that this method had certain factors that influenced the precision of measurement. However, there was a correlation between CNR and visual evaluation, and we were able to evaluate low contrast resolution in each apparatus. This method was considered a useful step, because low contrast resolution could be easily evaluated.
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 55 (8), 778-782, 1999
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
- 1390282681359735168
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- NII論文ID
- 110003438954
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
- http://id.crossref.org/issn/03694305
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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
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
