Proceedings of the KSMRM Conference (대한자기공명의과학회:학술대회논문집)

Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회)
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T1 Measurement in PRESS

  • Kang, Sei-Kwon (Dept. of Biomedical Engineering, College of Medicine, Catholic University) ;
  • Choe, Bo-Young (Dept. of Biomedical Engineering, College of Medicine, Catholic University) ;
  • Suh, Tae-Suk (Dept. of Biomedical Engineering, College of Medicine, Catholic University) ;
  • Lee, Hyoung-Koo (Dept. of Biomedical Engineering, College of Medicine, Catholic University)
  • Published : 2001.11.01
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Abstract

Purpose： PRESS is one of the representative sequences in MRS, but still, we do not have the formul describing the steady state magnetization of it. So, we derive the equation of th magnetization as a function of the echo time and the repetition time, and compare it wit phantom experiments. Method： PRESS consists of three 180 pulses and the additional crusher gradients whic destroy the unwanted coherences of the magnetization. Using the simple vector model, w derive a formula which describes the behaviour of the magnetization In PRESS and compa the results with the phantom experiment. Also, we explore the results of the T1 from STEAM, PRESS and the simple exponential.

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