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Ex vivo human arterial specimens: (a) Speckle decorrelation curves of 3 aortic samples: fibro-calcific, normal, and lipid rich, obtained using both the catheter and bench-top systems. (b) Correlation between ILSI catheter and bench-top time constant, τ, measurements. Good correlation (r = 0.79, p < 0.001) is observed between measurements obtained using the two configurations.
