Measurement of Hydrogen Diffusion through PVA Hydrogel using Magnetic Resonance Imaging Method in Comparison with Consistency Assessment using Digital Penetrometer

Dita Puspita Sari (Institut Teknologi Sepuluh Nopember (ITS))
Darminto Darminto (Institut Teknologi Sepuluh Nopember (ITS))

JFA (Jurnal Fisika dan Aplikasinya)
Vol 9, No 2 (2013)

A study of hydrogen diffusion behavior in the PVA (polyvinyl-alcohol) hydrogel had been done to measure diffusion coefficient (Apparent Diffusion Coefficient/ ADC) used as parameter of brain tumor grading. For our study, PVA hydrogel samples were prepared using freezing-thawing method with various concentration and number of freezing-thawing cycles. The ambiguity of brain tumor grading using ADC value, which is formed from Diffusion Weighted-Imaging 1,5 T, could be reduced enough with observing the result of correlation the ADC at b-value 1000 s/mm2 and 3000 s/mm2 with assessment of consistency measured using digital penetrometer based on microcontroller.