J022011 有限要素解析を援用したOptical Coherence Straingraphyによるマイクロメカニクス断層可視化の数値的検証([J02201]診療技術と臨床バイオメカニクス(1))

概要

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The rupture of unstable plaques on coronary artery should cause acute coronary syndromes. Authors proposed Finite Element Hybrid Optical Coherence Straingraphy (FEH-OCSA), which could visualize cross-sectional strain and stress distributions of tissue from speckle images obtained by Optical Coherence Tomography (OCT). This is based on the recursive speckle cross-correlation technique, which can provide the displacement vector distribution with high resolution. The proposed modification technique of the displacement vectors obtained by OCSA is also introduced, which can reduce measurement errors contaminating experimental data, according to the variational principle of minimized error. In this report, the proposed method was numerically applied to compressed tissue samples to carry out the accuracy verifications. Consequently, it was quantitatively confirmed that its accuracy of strain and stress distributions could be further enhanced by FEH-OCSA, thus the proposed method can provide mechanical information as tomographic strain and stress distributions in micro scale.
一般社団法人日本機械学会の論文
2011-09-11