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臨床MR画像を対象としたSNR測定法の検討
http://hdl.handle.net/2297/24687
http://hdl.handle.net/2297/2468766831ea0-451d-4413-8899-23c40ed041fd
名前 / ファイル | ライセンス | アクション |
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HO-PR-HAYASHI-N-8.pdf (1.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-05 | |||||
タイトル | ||||||
タイトル | 臨床MR画像を対象としたSNR測定法の検討 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Measurement of Signal-to Noise Ratio in clinical MR images : Development of correction method of SD map using the identical ROI method | |||||
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 |
林, 則夫
× 林, 則夫× 峰広, 香織× 作田, 啓太× 宮地, 利明× 真田, 茂× 鈴木, 正行× 松浦, 幸広× 河原, 和博× 山本, 友行 |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学附属病院放射線部 | |||||
書誌情報 |
医用画像情報学会雑誌 = Japan Society of Imaging and Information Sciences in Medicine 巻 26, 号 1, p. 8-12, 発行日 2009-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0910-1543 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | http://www.jstage.jst.go.jp/article/mii/26/1/26_8/_article/-char/ja/ | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN10156808 | |||||
出版者 | ||||||
出版者 | 医用画象情報学会 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Signal-to-Noise ratio (SNR) is an important quantity factor used to describe the performance of a magnetic resonance (MR) imaging. However, it is difficult to measure accurately the SNR in clinical parallel MR images. This study is to develop a SNR measurement method using a modified identical region of interest (ROI) technique in clinical parallel MR images. Phantom experiments were performed on a 1.5 and 3.0 Tesla MRI machine to compare three different methods of SNR measurements. We also performed SNR measurements in clinical cases. The method is consisted of the following four steps: 1) Calculation of standard deviation (SD) map 2) Edge detection and removal on SD map 3) Interpolation of the removed edge region 4) Calculation of SNR map using the interpolated SD map. Our developed method were approximately consistent with those of other SNR measurement methods in both phantom and clinical images. In addition, the results of our developed method could measure the SNR in the edge region in parallel MR images. Our method makes it possible to simply and accurately analyze SNR of the clinical parallel image with a single scan. | |||||
権利 | ||||||
権利情報 | Copyright (c) 2009 医用画像情報学会 | |||||
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 | http://www.mii-sci.jp/ |