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Understanding and Exploiting Magnetic Susceptibility

  • Michael L. Lipton

Abstract

The term susceptibility often comes up in conversations about MRI images. Yet, in an admittedly nonscientific poll of MRI users, I found it rare that anyone really had a good idea what the term actually means. Coming to an understanding of magnetic susceptibility is worthwhile (really!) because it drives home the nature of what we will call susceptibility-related effects that we can observe in images. Those effects can be both informative and annoying, sometimes simultaneously. And, they are very common. Fortunately, the concept of magnetic susceptibility is pretty straightforward, even encoded, as a permanent reminder, in the term itself:

Magnetic susceptibility is the degree to which a substance becomes magnetized when exposed to a magnetic field.

Susceptibility-related effects result from spatial variability in the static magnetic field strength.

Keywords

Contrast Agent Magnetic Susceptibility Static Magnetic Field Cerebral Blood Volume Water Proton 
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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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Michael L. Lipton
    • 1
    • 2
  1. 1.Albert Einstein College of Medicine and Montefiore Medical CenterBronxUSA
  2. 2.The Center for Advanced Brain ImagingThe Nathan S. Kline Institute for Psychiatric ResearchOrangeburgUSA

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