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

Dita Puspita Sari; Darminto Darminto

doi:10.12962/j24604682.v9i2.846

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

Dita Puspita Sari, Darminto Darminto

Abstract

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.

Keywords

apparent diffusion coefficient; polyvinyl-alcohol; diffusion weighted imaging; digital penetrometer

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DOI: http://dx.doi.org/10.12962%2Fj24604682.v9i2.846

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