Abstract
In this study, we report on hardness and size measurement of lump in thyroid using MEMS triaxial force sensor. We pushed triaxial force sensor to the model of thyroid and measured reactive force. The local maximums of shear force measured at the edges of the lump were 1.35N and 1.54N, respectively. The coefficient of correlation between the size of lump and the distance of local maximum points was 0.981. Since the coefficient of correlation was high, we could estimate the size of lump. The normal force measured by triaxial force sensor increased with the size and the hardness of lump. We calculated the increasing rate of normal force with respect to the size of lump. The coefficient of correlation between the increasing rate and Young's modulus of the lump was 0.996. Since the coefficient of correlation was high, we could estimate Young's modulus with average error of 0.246 kPa.
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