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A novel noise reduction filter for improving visibiligy of early CT signs of hyperacute stroke: evaluation of the filter's performance : Preliminary clinical experience
http://hdl.handle.net/10191/6247
http://hdl.handle.net/10191/6247f1184e2e-4c5a-4f82-86e6-ef78d4ef65b1
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
05_0002.pdf (1.3 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-04-18 | |||||
| タイトル | ||||||
| タイトル | A novel noise reduction filter for improving visibiligy of early CT signs of hyperacute stroke: evaluation of the filter's performance : Preliminary clinical experience | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Computed tomography | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Infarction | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Computer application | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Adaptive smoothing filter | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Takahashi, Noriyuki
× Takahashi, Noriyuki× Lee, Yongbum× Tsai, Du-Yih× Ishii, Kiyoshi |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 9 | |||||
| 姓名 | 李, 鎔範 | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 37779 | |||||
| 姓名 | 蔡, 篤儀 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Purpose: To evaluate the performance of a novel noise reduction filter for improving the visibilty of early CT signs of hyperacute stroke on nonenhanced CT images. Material and Methods: Fourteen patients with middle cerebral artery occlusion within 4.5 hours after onset were used for evaluations. Signal-to-noise ratio (SNR) of the processed images with the noise reduction filter and that of original images were measured. Moreover, two neuroradiologists visually rated all the processed and original images on the visibility of normal and abnormal gray-white matter interface. Results: The SNR value of the processed images was approximately eight times as high as that of the original images, and a 87% reduction of noise was achieved using this technique. In the visual assessment, the results showed that both the visibility of normal gray-white matter interface and that of the loss of the gray-white matter interface were significantly improved by using the proposed method (p<0.05). Conclusion: The noise reduction filter proposed in the present study has the potential to improve the visibility of early CT signs of hyperacute stroke on nonenhanced CT images. | |||||
| 書誌情報 |
Radiation Medicine en : Radiation Medicine 巻 25, 号 5, p. 247-254, 発行日 2007-06 |
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| 出版者 | ||||||
| 出版者 | Springer Berlin/Heidelberg | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 18625274 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1007/s11604-007-0129-3 | |||||
| 著者版フラグ | ||||||
| 値 | author | |||||
