血管狭窄モデルによるTOF-MRAの異常高信号の検証

• 荻原 義貞

  JA新潟厚生連上越総合病院　放射線治療科 金沢大学大学院医学系研究科

• 宮地 利明

  金沢大学大学院医学系研究科

• 春日 敏夫

  無所属

書誌事項

タイトル別名

• Verification of TOF-MRA Signals of Abnormally High Intensity by an Angiostenosis Model

抄録

In order to elucidate signals of abnormally high intensity which appear in angiostenotic loci in MRA by the TOF method, experiments were conducted using a phantom simulating angiostenosis. The signals of abnormally high intensity became more prominent with increased rate of stenosis, flow rate and TE. Due to the effects of flow acceleration in the stenotic loci, characteristic shapes were presented by these signals of abnormally high intensity. In experiments with the phantom tilted at 45 degrees, after replacement of the coordinate axes signals of abnormally high intensity appeared on the symmetric side of the long axis of the phantom. The signals of abnormally high intensity generated in the angiostenotic phantom are slice-encoding misregistration artifacts.

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 30 (4), 83-87, 2013

  医用画像情報学会

キーワード

• magnetic resonance angiography (MRA)
• time-of-flight (TOF)
• misregistration artifact

詳細情報

• CRID: 1390282679629068416
• NII論文ID: 130003383939
• DOI: 10.11318/mii.30.83
• ISSN: 18804977
• ISSN: 09101543
• Web Site: https://search.jamas.or.jp/link/ui/2015017486
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可