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Efficient Positioning of the Field-Free Point in Magnetic Particle Imaging

  • Tobias KnoppEmail author
  • Timo F. Sattel
  • Thorsten M. Buzug
Part of the Springer Proceedings in Physics book series (SPPHY, volume 140)

Abstract

Magnetic particle imaging uses a field with a single field-free point for spatial encoding. Such a gradient field can be generated by a Maxwell coil pair consisting of two opposing coils driven by current flowing in converse directions. In order to sample the volume in-between the coils, the field-free point has to be moved through space. When keeping the gradient strength constant the electrical power loss of the Maxwell coil pair setup drastically increases when moving the field-free point off-center. In this paper a coil configuration is proposed, which consists of four coils and considerably reduces the electrical power loss for off-center field-free point generation.

Keywords

Magnetic Particle Power Loss Magnetic Gradient Field Gradient Strength Converse Direction 
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

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    Gleich, B., Weizenecker, J., Timminger, H., Bontus, C., Schmale, I., Rahmer, J., Schmidt, J., Kanzenbach, J., Borgert, J.: Fast MPI demonstrator with enlarged field of view. In: Proc. ISMRM, Stockholm, vol. 18, p. 218.Google Scholar

Copyright information

© Springer-Verlag GmbH Berlin Heidelberg 2012

Authors and Affiliations

  • Tobias Knopp
    • 1
    Email author
  • Timo F. Sattel
    • 1
  • Thorsten M. Buzug
    • 1
  1. 1.Institute of Medical EngineeringUniversity of LübeckLübeckGermany

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