CT, MRIによる脳表の造影三次元画像(3D Surface CT Angiography, 3D Surface MR Angiography)の検討
書誌事項
- タイトル別名
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- Evaluation of Three-dimensional Enhanced Brain Surface Imaging Using CT (3D surface CT angiography) and Magnetic Resonance Imaging (3D surface MR angiography)
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The optimal imaging conditions for 3D brain surface imaging by magnetic resonance imaging (MRI) and multi-slice CT were investigated. Visualization of the sulci, gyri, and veins on the brain's surface was also compared between 3D surface images acquired using multi-slice CT and conventional single-slice CT and MRI. Various imaging parameters, including slice thickness, dose, and matrix size, were evaluated using our original brain surface phantom and longitudinal direction evaluation phantom as well as images obtained from healthy volunteers. Subjects of the clinical study were patients with arteriovenous malformations and brain tumors who underwent CT-angiography at the same time as MR-angiography. The quality of 3D images of the brain surface is most strongly influenced by partial volume effects related to slice thickness. In multi-slice CT, a slice thickness of 0.5 mm can be employed to minimize the partial volume effect, providing results that are far superior to those that can be achieved by conventional single-slice 3D-CT. In addition, the excellent S/N of multi-slice CT permits the veins on the brain's surface to be clearly visualized without the use of contrast medium. With regard to visualization of the sulci and gyri, although some problems remain to be overcome, multi-slice CT was found to be equivalent to 3D surface imaging using MRI.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 58 (12), 1622-1631, 2002
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390001206389797248
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- NII論文ID
- 110003434031
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
- http://id.crossref.org/issn/03694305
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可