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MRIにおけるSNRの空間周波数特性の評価
http://hdl.handle.net/2297/36644
http://hdl.handle.net/2297/3664440f50f75-8b34-4fa3-afef-088add7afc23
名前 / ファイル | ライセンス | アクション |
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ME-PR-MITATI-T-87.pdf (1.2 MB)
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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 | MRIにおけるSNRの空間周波数特性の評価 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Evaluation of Spatial Frequency Characteristic of SNR in MRI | |||||
言語 | ||||||
言語 | jpn | |||||
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 |
宮地, 利明
× 宮地, 利明× 藤田, 広志× 真田, 茂× 越田, 吉郎× 春日, 敏夫 |
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書誌情報 |
医用画像情報学会雑誌 = Medical Imaging and Information Sciences 巻 18, 号 2, p. 87-92, 発行日 2001-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0910-1543 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN10156808 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.11318/mii1984.18.87 | |||||
出版者 | ||||||
出版者 | 医用画像情報学会 = MII: Japan Society of Medical Imaging and Information Sciences | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A method was developed to accurately measure signal-to-noise ratios (SNRs) in positive and negative frequencies of magnetic resonance images (MRIs). SNR2(f) was calculated from the modulation transfer function (MTF) and the Wiener spectrum, both of which were determined with subtracted complex images at the same phantom setting. The SNR2(f)s in the conventional spin echo (SE) and Turbo SE which set effective echo time at the first echo were evaluated by changing the T2 of the phantom in the frequency and phase encode directions. SNR2s gave positive and negative spatial frequency information that was not obtained with conventional methods. In this method, the influences of image nonuniformity and unnecessary artifacts could be eliminated. Analysis of the SNR in the spatial frequency domain made it possible to obtain more detail on the image quality of MRI. | |||||
権利 | ||||||
権利情報 | Copyright © 医用画像情報学会 MII: Japan Society of Medical Imaging and Information Sciences | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.jstage.jst.go.jp/browse/mii/-char/ja/ | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.mii-sci.jp/ | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://ci.nii.ac.jp/naid/10010439754 |