Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Magnetic Resonance Angiography using 3D Time-Of-Flight Method

Time of Flight 원리를 이용한 삼차원 자기공명 혈관조영술의 구현

  • Yi, Y. (Department of Electronics and Information Engineering, Korea University) ;
  • Ryu, T.H. (Department of Electronics and Information Engineering, Korea University) ;
  • Kim, S.S. (Department of Electronics and Information Engineering, Korea University) ;
  • Ahn, S.H. (Department of Electronics and Information Engineering, Korea University) ;
  • Lee, M.W. (Department of Electronics and Information Engineering, Korea University) ;
  • Jung, K.J. (Medison Co. Ltd.)
  • 이윤 (고려대학교 전자 및 정보공학부) ;
  • 류택현 (고려대학교 전자 및 정보공학부) ;
  • 김시승 (고려대학교 전자 및 정보공학부) ;
  • 안성혁 (고려대학교 전자 및 정보공학부) ;
  • 이만우 (고려대학교 전자 및 정보공학부) ;
  • 정관진 (메디슨 MRI 연구소)
  • Published : 1998.11.20
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Abstract

3D TOF MR Angiography is able to obtain thinner slice thickness, higher SNR, therefore higher spatial resolution than 2D TOF MR Angiography. Since it uses longer TR than 2D TOF MRA to allow stronger in-flow effect, the background tissue may not be fully saturated. Thus background tissue signal can be further suppressed by MTS(Magnetization Transfer Saturation). Flow-compensation was accomplished by GMN(Gradient Moment Nulling), and tracking saturation was used to suppress vein signal. The different flow signal at the entry of the slab and output of the slab can be compensated by TONE(Tilted Optimized Non-saturating Excitation) RF pulse.

Keywords