書誌事項
- タイトル別名
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- Usefulness of Phase-sensitive Inversion Recovery in Delayed Enhanced Cardiac MRI
- 心筋遅延造影MRIにおけるPhase-sensitive Inversion Recovery法の有用性
- シンキン チエン ゾウエイ MRI ニ オケル Phase sensitive Inversion Recoveryホウ ノ ユウヨウセイ
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説明
[Background] Delayed-enhancement MRI is a technique that has significant clinical usefulness, particularly for myocardial viability determination in ischemic heart disease. Delayed enhanced images have been acquired by using the inversion recovery(IR)method. It is necessary for the IR method to select optimal inversion time(TI). Recently, the phase-sensitive inversion recovery(PSIR)method has been developed to detect Gd-DTPA enhanced myocardium. [Purpose]To compare the IR method with the PSIR method by acquiring Gd-DTPA solution phantoms A(0.05 mmol/l)and B(0.04 mmol/l)in various parameters. [Method]Images were acquired using a turbo-fast low angle shot(t-flash)sequence in each method. [Results]The null point of signal intensity(SI)shortened as the flip angle(FA)and segments increased in the IR method. Excess segments also caused the duration of breath holding to be extended. The IR method might cause reversed SI between normal and Gd-DTPA enhanced myocardium if the optimal TI was not carefully selected. On the other hand, PSIR had no problem in obtaining phase-sensitive images that were converted into positive SI keeping inverse longitudinal magnetization. The PSIR method avoided the need to select optimal TI and loss of contrast. [Conclusion]The PSIR method was a useful sequence for delayed-enhancement MRI to detect Gd-DTPA enhanced myocardium.
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 63 (6), 661-666, 2007
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
- 1390001206363208320
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- NII論文ID
- 110006317588
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 8868745
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- PubMed
- 17625357
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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
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
