Fetal MRI pp 19-32 | Cite as

How to Shorten MRI Sequences

Guiding Choices for High Speed Imaging
  • Matthew Clemence
Part of the Medical Radiology book series (MEDRAD)


MRI offers an unrivaled method for detailed anatomical imaging with a high degree of flexibility in the image contrasts which may be generated. However, this flexibility comes at the cost of considerable complexity in the determination of the optimum sequence for any given application. It is rare, however, that an imaging task is created from scratch; often an MR sequence needs to be modified in response to a clinical challenge. For fetal imaging, this is most often to compensate for motion in utero. This chapter seeks to present to the non-MRI specialist the consequences and trade-­offs encountered when modifying scan procedures, to provide a background and common ground for the development of fetal imaging protocols.


Radio Frequency Parallel Imaging Echo Planar Image Final Image Magnetic Resonance Image System 
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  1. Haase A, Frahm J, Matthaei D, Hänicke W, Merboldt KD (1986) FLASH imaging: rapid NMR imaging using low flip angle pulses. J Magn Reson 67:258–266Google Scholar
  2. Hennig J, Nauerth A, Friedburg H (1986) RARE imaging: a fast imaging method for clinical MR. Magn Reson Med 3:823–833PubMedCrossRefGoogle Scholar
  3. Mansfield P, Maudsley AA (1977) Planar spin imaging. J Magn Reson 27:101Google Scholar
  4. McRobbie D. et al. (2003) MRI, From picture to proton. Cambridge University PressGoogle Scholar
  5. Pruessmann KP, Weiger M, Scheidegger MB, Boesiger P (1999) SENSE: sensitivity encoding for fast MRI. Magn Reson Med 42(5):952–962PubMedCrossRefGoogle Scholar
  6. Oppelt A, Graumann R, Barfuss H, Fisher H, Hartl W, Schajor W (1986) FISP – a new fast MRI sequence. Electromedica 54(1):15–18Google Scholar
  7. Oshio K, Feinberg DA (1991) GRASE (Gradient-and Spin-Echo) imaging: a novel fast MRI technique. Magn Reson Med 20:344–349PubMedCrossRefGoogle Scholar
  8. Sodickson DK, Manning WJ (1997) Simultaneous acquisition of spatial harmonics (SMASH): fastimaging with radiofrequency coil arrays. Magn Reson Med 38(4):591–603PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Philips Healthcare Clinical ScienceSurreyUK

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