J0204-1-3 関節軟骨超音波評価法における探査子の角度推定法におよぼす反射面表面性状の影響([J0204-1]バイオトライボロジー(1))

概要

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We have proposed "Rise-to-Peak time" as the index of probe leaning in ultrasound measurement of articular cartilage. It was suggested that automatic amplitude correction using the "Rise-to-Peak time" are available to decrease measurement error. The aim of this study is to evaluate the availability of the method in the measurement of cartilage sites that have different surface properties. The effect of surface roughness and curvature on echo amplitude and the "Rise-to-Peak time" was investigated. The "Rise-to-Peak time" is defined as time interval between the rise of first peak and the positive peak next to the minimum peak of echo. Relationship between the "Rise-to-Peak time" and probe leaning was measured. Surface roughness and curvature of reflection surface increased the "Rise-to-Peak time", however the relative slope of the effects compared with that on the leaning of ultrasound probe were lower than that for the echo amplitude. Thus, the "Rise-to-Peak time" is expected to be more reliable indication for the leaning of ultrasound probe.
一般社団法人日本機械学会の論文
2010-09-04