Abstract
We present a novel NMR imaging technique that allows absolute determination of the magnetic susceptibility constant, chi, of a solution. By comparing the phase difference of MR images produced with an instant (echo planar) "offset" spin-echo sequence, we obtain a direct measure of the magnetic field perturbations caused by the solution. We demonstrate this method with Gd(DTPA), Dy(DTPA), human red blood cells, and superparamagnetic iron oxide particles.
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Contrast Media*
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Dextrans
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Dysprosium
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Erythrocytes*
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Ferrosoferric Oxide
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Gadolinium
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Gadolinium DTPA
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Humans
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Image Processing, Computer-Assisted
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In Vitro Techniques
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Iron
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Magnetic Resonance Imaging*
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Magnetite Nanoparticles
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Organometallic Compounds
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Oxides
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Pentetic Acid
Substances
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Contrast Media
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Dextrans
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Magnetite Nanoparticles
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Organometallic Compounds
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Oxides
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Dysprosium
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Pentetic Acid
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dysprosium DTPA
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Gadolinium
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Iron
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ferumoxides
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Gadolinium DTPA
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Ferrosoferric Oxide