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アイテム
Shannon entropy as a stable diffusion tensor parameter for evaluating normal spinal cord regions in dogs
http://hdl.handle.net/10458/0002002119
http://hdl.handle.net/10458/00020021196a6c7561-78a1-47fc-b31a-0e7e915b5a26
| 名前 / ファイル | ライセンス | アクション |
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2026-01-06 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Shannon entropy as a stable diffusion tensor parameter for evaluating normal spinal cord regions in dogs | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| キーワード | Apparent diffusion coefficient (ADC) | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| キーワード | Diffusion tensor imaging (DTI) | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| キーワード | Fractional anisotropy (FA) | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| キーワード | Magnetic resonance imaging (MRI) | |||||||||||||
| キーワード | ||||||||||||||
| 言語 | en | |||||||||||||
| キーワード | Spinal cord | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ | journal article | |||||||||||||
| アクセス権 | ||||||||||||||
| アクセス権 | open access | |||||||||||||
| 著者 |
Goda, Yoshimichi
× Goda, Yoshimichi
× Mizutani, Yuko
× Hirayama, Mizuki
× Asanuma, Taketoshi
× 佐藤, 裕之 |
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | Diffusion tensor imaging (DTI) has been used in veterinary medicine for cerebral infarctions and degenerative diseases in recent years. Defining normal values for the apparent diffusion coefficient (ADC) and fractional anisotropy (FA) to detect lesions is challenging because these values depend on anatomical differences in the spinal cord, magnetic resonance imaging (MRI) machine model, magnetic field strength, and measurement protocol. Shannon entropy is the average amount of information and is a measure of the variability or complexity, of distributed numbers. The purpose of this study is to evaluate whether Shannon entropy can serve as a useful new indicator for interpreting the structural integrity of the canine spinal cord. We used six beagle dogs with no spinal cord disease, as confirmed by neurological examination and magnetic resonance imaging. We calculated the respective values for the cervical and thoracolumbar spinal cord under the 3 T magnetic field. The ADC and FA values (mean ± standard error) of the cervical spinal cord were 1.11 ± 0.05 × 10−3 mm2/s and 0.64 ± 0.02. The thoracolumbar spinal cord had values of 1.16 ± 0.04 × 10−3 mm2/s and 0.58 ± 0.02. The ADC and FA values of the spinal cord reflected anatomical differences, and no fixed normal values were observed for the entire spinal cord. Shannon entropy was 5.67 ± 0.45. No significant differences were observed in the values at any intervertebral level. These results suggest that Shannon entropy is more useful than the ADC and FA values. Shannon entropy may be able to differentiate between normal tissue and lesions, independent of various MRI conditions. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : Research in veterinary science 巻 200, p. 106036, 発行日 2026-03 |
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| 出版者 | ||||||||||||||
| 出版者 | Elsevier | |||||||||||||
| 言語 | en | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||
| 収録物識別子 | 15322661 | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 00345288 | |||||||||||||
| DOI | ||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1016/j.rvsc.2025.106036 | |||||||||||||
| 権利 | ||||||||||||||
| 権利情報 | © 2025 Elsevier Ltd. | |||||||||||||
| 言語 | en | |||||||||||||
| 著者版フラグ | ||||||||||||||
| 出版タイプ | AM | |||||||||||||
