書誌事項
- タイトル別名
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- Dynamic Contrast-enhanced T_1 Measuring MRI Using Variable Flip Angle SPGR
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説明
We modified the multi-phase spoiled gradient recalled echo (SPGR.) pulse sequence using the double-echo MR technique for estimation of T_1 during the first pass of contrast agent, and examined its precision. In the first half of the pulse sequence, the flip angle was varied systematically to calculate static T_1 values. It was necessary to choose optimal flip angles to minimize the calculation error of static T_1 values. In the latter half of this sequence, changes in absolute T_1 were calculated using differences in signal intensities before and after the injection of contrast agent. The optimal flip angle was 20 degrees for precise conversion to T_1 values under the short TR(33.3 ms)condition. Double echo MR data were used to minimize the T_2 effect. The present method appears to be useful for quantitative estimation of dynamic contrast-enhanced 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 59 (12), 1535-1541, 2003
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
- 1390282681365752832
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- NII論文ID
- 110003434100
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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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- PubMed
- 15001868
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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
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可