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Ferrohydrodynamic relaxometry for magnetic particle imaging
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10.1063/1.3604009
/content/aip/journal/apl/98/26/10.1063/1.3604009
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/26/10.1063/1.3604009

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) MPI Relaxometer. (b) Ideal (without relaxation), measured, and fitted one-dimensional x-Space MPI signals (UWASH20, d = 18.7 nm ± 5.6 nm, τ = 16.3 μs, and Bpp  = 24 mT). (c) Two-dimensional relaxogram that gives both the distribution of the USPIO diameter and relaxation constant. (d) X-space PSFs for frozen and liquid Resovist tracer indicate that Resovist nanoparticles relax with both Néel and Brownian mechanisms.

Image of FIG. 2.
FIG. 2.

(Color online) Mean relaxation constant as a function of excitation strength for single domain magnetic nanoparticles. As expected, the effective relaxation constant decreases as we increase the excitation magnitude.

Tables

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Table I.

Measured USPIO diameter, relaxation constant, and resolution. Excitation amplitude B peak–peak = 24 mT, N = 4.

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/content/aip/journal/apl/98/26/10.1063/1.3604009
2011-06-27
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ferrohydrodynamic relaxometry for magnetic particle imaging
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/26/10.1063/1.3604009
10.1063/1.3604009
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