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アイテム
Diffusion Tensor Imaging of Kidneys With Respiratory Triggering: Optimization of Parameters to Demonstrate Anisotropic Structures on Fraction Anisotropy Maps
https://repo.qst.go.jp/records/45559
https://repo.qst.go.jp/records/455592b1a9345-ba36-4db2-9582-5a25b0459d1a
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-06-29 | |||||
| タイトル | ||||||
| タイトル | Diffusion Tensor Imaging of Kidneys With Respiratory Triggering: Optimization of Parameters to Demonstrate Anisotropic Structures on Fraction Anisotropy Maps | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kataoka, Masako
× Kataoka, Masako× Kido, Aki× Nakamoto, Yuji× Koyama, Takashi× Isoda, Hiroyoshi× Maetani, Youji× Umeoka, Shigeaki× Tamai, Ken× Saga, Tsuneo× Morisawa, Nobuko× Togashi, Kaori× et.al× 佐賀 恒夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | PURPOSE: To demonstrate the feasibility of diffusion tensor imaging (DTI) of kidneys with respiratory triggering, and determine the optimal imaging parameters for fraction anisotropy (FA) maps. MATERIALS AND METHODS: DTI of kidneys from 16 healthy volunteers was performed using a 1.5T scanner. Five different sequences with different parameters including respiration-triggered acquisition or multiple breath-holding, slice thicknesses of 3 or 5 mm, and different numbers of signal averaging and b values were compared. FA and apparent diffusion coefficients (ADCs) of the cortex and medulla were measured. Measurement error within the same and repeated examination was examined using within-individual standard deviation (Sw). RESULTS: FAs of the renal cortex were lower than the medulla (mean value of a sequence ranging 0.148-0.224, 0.433-0.476) and the ADCs of the cortex were higher than the medulla (2.26-2.69x10(-3) mm2/s, 1.77-2.19x10(-3) mm2/s) in all sequences (P<0.001). The renal cortex-medulla difference was the largest, with respiratory trigger- ing including a 3-mm slice thickness, three signal averages,and a b-value=0, 200, or 400 s/mm2 (P<0.001). Sw tended to be smaller in the sequence with a b-value of 400 s/mm2. CONCLUSION: DTI of kidneys with respiratory triggering is feasible with excellent cortex-medulla differentiation. |
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| 書誌情報 |
Journal of Magnetic Resonance Imaging : JMRI 巻 29, 号 3, p. 736-744, 発行日 2009-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1053-1807 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1002/jmri.21669 | |||||
