書誌事項
- タイトル別名
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- Calibration Methods for Diffusion Tensor Imaging on MR Microscopy
- イホウセイ ファントム ノ MR ケンビキョウ カクサン テンソル ケイソク
- 公開日
- 2006
- DOI
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- 10.11239/jsmbe.44.735
- 公開者
- 公益社団法人 日本生体医工学会
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説明
Improvements in magnetic resonance imaging (MRI) technology have made it possible to measure diffusion of the water molecule, which was difficult to measure in the past. The degree of water diffusion can be obtained from the intensities of diffusion-sensitive MR images (diffusion-weighted image: DWIs). Using DWIs with six dimensions, calculation of the diffusion tensor becomes possible. In this research, we measure the diffusion tensor image (DTI) using a MR microscope (MRM-DTI) with a spatial-resolution of the 100-micron order. A motion-proving magnetic field gradient (MPG) is used in the MRM-DTI. There exists a problem, however, that the result is not uniform according to the direction of the MPG regardless of the uniform phantom due to the coil and power characteristics. Here, we propose a new method of b-value calibration using the isotropic region included in the anisotropic phantom. Using this calibration method, we tried to measure the DTI not only for an isotropic phantom, but also for an anisotropic phantom.
収録刊行物
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- 生体医工学
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生体医工学 44 (4), 735-738, 2006
公益社団法人 日本生体医工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680244628096
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- NII論文ID
- 110006249838
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- NII書誌ID
- AA11633569
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- ISSN
- 18814379
- 1347443X
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- NDL書誌ID
- 8788231
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可