Measurement of Ferric Ion Diffusion Coefficient in Fricke-Infused Agarose Gel From MR Image Intensity Changes

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 1.31x10(-2)cm(2)h(-1) in room temperature. This value falls within the 1 ^ 2x10(-2)cm(2)h(-1) range obtained by previous studies under varying concentrations of gel ingredients.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA412079

Entities

People

  • Sung-cheng Huang
  • Woei-chyn Chu
  • Yin-jiun Tseng

Tags

DTIC Thesaurus Topics

  • Acquisition
  • Biomedical Engineering
  • Coefficients
  • Diffusion
  • Diffusion Coefficient
  • Dosimetry
  • Engineering
  • Equations
  • Errors
  • Intensity
  • Magnetic Resonance
  • Magnetic Resonance Imaging
  • Measurement
  • Radiosurgery
  • Sodium Compounds
  • Standards
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Analytical Chemistry
  • Nanocomposite Materials Science
  • Plasma Physics / Magnetohydrodynamics