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Basic Pulse Sequences

  • Dominik Weishaupt
  • Victor D. Köchli
  • Borut Marincek

Abstract

Let us consider once again all the steps in an MR sequence:
  1. 1. Excitation

    Switching on the slice-selection gradient, Excitation pulse (RF pulse),

    Switching off the slice selection gradient.

     
  2. 2. Phase encoding

    Switching on the phase-encoding gradient for a short time, but each time with a different strength.

     
  3. 3. Echo generation

    There are two different possibilities, which we shall discuss immediately.

     
  4. 4. Measurement

    Switching on the frequency encoding gradient, Receiving the echo.

     

Keywords

Inversion Time Longitudinal Magnetisation Short Repetition Time Outflow Effect Basic Pulse Sequence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Elster AD (1993) Gradient-echo MR imaging: techniques and acronyms. Radiology 186: 1PubMedGoogle Scholar
  2. Haacke EM, Frahm J (1991) A guide to understanding key aspects of fast gradient-echo imaging. J Magn Reson Imaging 1. 621PubMedCrossRefGoogle Scholar
  3. Mitchell DG (1999) MRI principles. W.B. Saunders, PhiladelphiaGoogle Scholar
  4. Nitz WR (1999) MR imaging acronyms and clinical applications. Eur Radiol 9: 979PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Dominik Weishaupt
    • 1
  • Victor D. Köchli
    • 2
  • Borut Marincek
    • 1
  1. 1.Institute of Diagnostic RadiologyZurichSwitzerland
  2. 2.ZurichSwitzerland

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