TY - JOUR
T1 - Measurement of ferric ion diffusion coefficient in Fricke-infused agarose gel from MR image intensity changes
AU - Tseng, Yin Jiun
AU - Chu, Woei Chyn
AU - Huang, Sung Cheng
PY - 2001/10
Y1 - 2001/10
N2 - 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.
AB - 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.
KW - Ferric ion diffusion
KW - Gamma knife radiosurgery
KW - MRI-Fricke-infused gel dosimetry
UR - http://www.scopus.com/inward/record.url?scp=0035782010&partnerID=8YFLogxK
U2 - 10.1109/IEMBS.2001.1017236
DO - 10.1109/IEMBS.2001.1017236
M3 - Conference article
AN - SCOPUS:0035782010
SN - 0454-9244
VL - 3
SP - 2303
EP - 2306
JO - Annual Reports of the Research Reactor Institute, Kyoto University
JF - Annual Reports of the Research Reactor Institute, Kyoto University
T2 - 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Y2 - 25 October 2001 through 28 October 2001
ER -