高速スピンエコー法を用いたT1・T2同時計測MRI

• 金澤 裕樹

  京都第一赤十字病院放射線診断科 金沢大学大学院医学系研究科保健学専攻

• 宮地 利明

  金沢大学大学院医学系研究科保健学専攻

• 八木 絢子

  京都第一赤十字病院放射線診断科

• 吉田 彩

  京都第一赤十字病院放射線診断科

• 佐藤 修

  京都第一赤十字病院放射線診断科

書誌事項

タイトル別名

• T1 and T2 Hybrid Measurements using Fast Spin-echo Sequences

抄録

The purpose of our study is to develop and to assess a method to calculate T₁ and T₂ relaxation times using fast spin-echo (FSE) sequences with two echoes per excitation. On a 1.5-T MRI, dual-echo FSE sequences with different repetition times (TR:TR₂=2TR₁, i.e., TR₁=400ms and TR₂=800ms) were performed in MnCl₂ phantom. Then, we assessed effects of the echo train length (ETL) , effective echo time (TE) , and T₂ correction for T₁ measurement, when changed each imaging parameter. Besides, we evaluated with comparison between the dual-echo FSE method and mixed sequence. With optimizing FSE imaging parameters, i.e., effective TE, TR, and low ETL, the measurement values of T₁ and T₂ revealed significantly higher correlation between the dual FSE method and mixed sequence. Moreover, the T₂ correction to calculate T₁ value could be omitted by shortening first effective TE. The dual-echo FSE method makes it possible to measure T₁ and T₂ fast and easily and to obtain more detailed information of organizations in human.

収録刊行物

• 医用画像情報学会雑誌

  医用画像情報学会雑誌 27 (4), 111-115, 2010

  医用画像情報学会

キーワード

• Fast spin-echo
• T₁ mapping
• T₂ mapping
• T₂ correction
• Parameter optimization
• Magnetic Resonance Imaging/methods

詳細情報

• CRID: 1390282679630542848
• NII論文ID: 130000442011
• NII書誌ID: AN10156808
• DOI: 10.11318/mii.27.111
• ISSN: 18804977
• ISSN: 09101543
• Web Site: http://hdl.handle.net/2297/36646
• Web Site: https://search.jamas.or.jp/link/ui/2011189048
• データソース種別:
  • JaLC
  • IRDB
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可