Measurement of ferric ion diffusion coefficient in Fricke-infused agarose gel from MR image intensity changes

Yin Jiun Tseng*, Woei Chyn Chu, Sung Cheng Huang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

A mathematical modeling was adopted to calculate the ferric ion diffusion coefficient based on the radiation induced magnetic resonance (MR) image intensity change in Fricke-agarose gels. A fast magnetic resonance imaging acquisition technique was employed to avoid the smearing of acquired data due to diffusion over an extended period of time. Our results showed that for a Fricke-agarose gel contained 1mM ammonium ferrous sulfate, 1% agarose. 1mM sodium chloride and 50mM sulfuric acid, its ferric ion diffusion coefficient is 1.31×10-2cm-2h-1 in room temperature. This value falls within the 1 ∼ 2×10-2cm2h-1 range obtained by previous studies under varying concentrations of gel ingredients.

Original languageEnglish
Pages (from-to)2303-2306
Number of pages4
JournalAnnual Reports of the Research Reactor Institute, Kyoto University
Volume3
DOIs
StatePublished - Oct 2001
Event23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Istanbul, Turkey
Duration: 25 Oct 200128 Oct 2001

Keywords

  • Ferric ion diffusion
  • Gamma knife radiosurgery
  • MRI-Fricke-infused gel dosimetry

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