臨床技術 FIESTA法におけるStart up echo法の相違が信号強度に及ぼす影響について
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- 資料種別
- 記事
- 著者・編者
- 中 孝文高橋 光幸
- 並列タイトル等
- Clinical technology: Influence of the difference in start-up echo on signal intensity in the FIESTA sequence
- タイトル（掲載誌）
- 日本放射線技術学会雑誌 = Japanese journal of radiological technology
- 巻号年月日等（掲載誌）
- 64(11) (通号 457) 2008.11
- 掲載巻
- 64
- 掲載号
- 11
- 掲載通号
- 457
- 掲載ページ
- 1375～1382
- 掲載年月日（W3CDTF）
- 2008-11
- ISSN（掲載誌）
- 0369-4305
- ISSN-L（掲載誌）
- 0369-4305
- 出版事項（掲載誌）
- 京都 : 日本放射線技術学会
- 出版地（国名コード）
- JP
- 本文の言語コード
- jpn
- NDLC
- 対象利用者
- 一般
- 所蔵機関
- 国立国会図書館
- 請求記号
- Z19-205
- 連携機関・データベース
- 国立国会図書館 : 国立国会図書館雑誌記事索引
- 書誌ID（NDLBibID）
- 9727563
- 整理区分コード
- 632
- 要約等
- The FIESTA sequence is a fast imaging method used for various parts in recent years. A constant flip angle (CFA) or linear flip angle (LFA) are used as the start-up echo in many cases. It is reported from CFA, which is the conventional method, that the T1 value and T2 value influence the speed that reaches steady state. However, there is no such report in LFA. Therefore, we examined the influence of the difference of start-up echo method upon signal intensity. In phantoms other than vegetable oil, the difference was not accepted in the change of speed that reaches steady state and the signal intensity in steady-state transit. In LFA, signal intensity of vegetable oil was clearly lower than CFA. The same result was obtained regardless of on or off resonance. From the result, it was thought that it depended on T2/T1 for the speed that reaches steady state. Moreover, the difference in resonant frequency was considered to greatly influence LFA but not CFA. That is, it was suggested by the difference in start-up echo that the signal intensity of fat changes greatly.
- DOI
- 10.6009/jjrt.64.1375
- オンライン閲覧公開範囲
- インターネット公開
- 連携機関・データベース
- 科学技術振興機構 : J-STAGE
- 要約等
- The FIESTA sequence is a fast imaging method used for various parts in recent years. A constant flip angle (CFA) or linear flip angle (LFA) are used as the start-up echo in many cases. It is reported from CFA, which is the conventional method, that the T1 value and T2 value influence the speed that reaches steady state. However, there is no such report in LFA. Therefore, we examined the influence of the difference of start-up echo method upon signal intensity. In phantoms other than vegetable oil, the difference was not accepted in the change of speed that reaches steady state and the signal intensity in steady-state transit. In LFA, signal intensity of vegetable oil was clearly lower than CFA. The same result was obtained regardless of on or off resonance. From the result, it was thought that it depended on T2/T1 for the speed that reaches steady state. Moreover, the difference in resonant frequency was considered to greatly influence LFA but not CFA. That is, it was suggested by the difference in start-up echo that the signal intensity of fat changes greatly.
- DOI
- 10.6009/jjrt.64.1375
- 関連情報（URI）
- 参照
- Reduction of transient signal oscillations in true‐FISP using a linear flip angle series magnetization preparationSteady-state free precession imaging in the presence of motion: application for improved visualization of the cerebrospinal fluid.Characterization and reduction of the transient response in steady‐state MR imagingFluid Attenuated Inversion Recovery Balanced Turbo Field Echo (FLAIR-B-TFE)における画像コントラストについての基礎的検討
- 連携機関・データベース
- 国立情報学研究所 : CiNii Research
- 提供元機関・データベース
- Japan Link Center雑誌記事索引データベースCrossrefCiNii Articles
- 書誌ID（NDLBibID）
- 9727563
- NII論文ID
- 110006990471