颈动脉超声体模血管扩张（FMD）的测量比较研究

The aim of this study was to acquire great evaluation method used to the early stage diagnosis and treatment of carotid atherosclerosis in clinic by designing measurement experiment based on ultrasound phantom for Flow-mediated Dilation (FMD).And qualitative and quantitative analyses and comparison were made for these methods. The actual heights of simulated plaques in carotid ultrasound-phantom acted as the golden standard for judgment. Plaques heights measurement on two individual platforms, respectively - Ultrasonography-based Measurement Method (UMM) and Computer-based Measurement Method (CMM) - for three respectively measurement methods (①Transverse Plaques Height Measurement (TPHM) ②Transverse Plaques Area Measurement (TPAM), ③Longitudinal Plaques Height Measurement(LPHM).From these data results, analyses and comparisons were conducted to evaluate these measurement methods of the plaques height. The measurement results between UMM and CMM were statistically significantly different (P<0.05), but there was only a small difference in numerical value. For TPAM, UMM had a better performance in terms of accuracy than CMM; but for TPHM and LPHM, the results were just the opposite. Generally speaking, the accuracy of CMM was better than UMM.TPHM is similar to LPHM, but TPAM had obvious difference between both TPHM and LPHM..