Modeling of Ultrasonic Echo from Posterior Arterial Wall for Accurate in-vivo Detection of Intima-Media Complex Boundaries

概要

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In line with the fact that the intima-media thickness (IMT) of the carotid arterial wall is the most frequently used indicator to diagnose atherosclerosis by ultrasound, it is essential to accurately estimate the thickness of the intima-media complex (IMC) boundaries, i.e., the lumen-intima boundary (LIB) and media-adventitia boundary (MAB). In this study, an improved adaptive model of an ultrasonic echo was developed to realize better fitting of the model to the reference RF echo, which was calculated from a transmitted ultrasonic wave measured with a hydrophone. Using the normalized mean squared error (MSE) method, the improved adaptive model (multiply the sinusoidal wave with the envelope of the reference RF echo) was fitted with the RF signal measured in vivo, and the positions of the model which give the minimum difference between the measured and model signals, are determined as the boundaries of the carotid arterial wall.
一般社団法人電子情報通信学会の論文
2012-06-14