書誌事項
- タイトル別名
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- Effects of Region of Interest Settings in Signal-to-Noise Ratio Measurement of Clinical Images Using Arrays of Multiple Receiver Coils
- アレイコイル オ シヨウ シタ リンショウ ガゾウ ノ SNR ソクテイ ニ オケル ROI セッテイ ノ エイキョウ
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抄録
In many clinical imaging procedures using arrays of multiple receiver coils, a uniform sensitivity process is performed using the sensitivity distribution from the body coil. This causes the noise to be uneven, and background noise cannot be used when measuring the signal-to-noise ratio (SNR). The SNR of clinical images with sensitivity correction using arrays of multiple receiver coils sets the region of interest (ROI) in the region where the signal is uniform, and is limited to the identical ROI method where measurements are taken with noise from the identical region. When SNR is measured with the identical ROI method, uneven noise caused by sensitivity correction as well as the signal strength distribution within the ROI of the object is reflected in the noise. Therefore, evaluation must be performed in as localized a position as possible. Measurement error becomes small on images with higher resolution, and if ROI larger than 10×10 pixels can be set in a region of even signal, SNR measurement of clinical images with less underestimation may be possible.
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 68 (9), 1269-1278, 2012
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
- 1390001206362395264
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- NII論文ID
- 130002081069
- 10030882344
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- NII書誌ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC38bpt1Cktw%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 024008274
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- PubMed
- 23001275
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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
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- 抄録ライセンスフラグ
- 使用不可