Abstract：
OBJECTIVE: In comparing the repeatability of the internal diameter and hemodynamic parameters of the dorsalis pedis artery measured by immersion ultrasound and contact ultrasound, the factors affecting the accuracy and repeatability of measurement were analyzed. This study aimed to provide a better method for ultrasound evaluation of the dorsalis pedis artery before flap transplantation.
METHODS: Two senior sonographers measured the diameter of the dorsalis pedis artery (D) of 56 healthy volunteers, measuring at the same location and at different time points using water immersion and contact ultrasound. Color Doppler ultrasound was used to measure the hemodynamics of the dorsalis pedis artery, including peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI). The interclass correlation coefficient (ICC) was used to evaluate the intraobserver and interobserver repeatability for each group\'s measurements.
RESULTS: The intraobserver and interobserver reproducibility of D, PSV, EDV, and RI measurements by water immersion ultrasound was very good. The intraobserver and interobserver reproducibility of the contact ultrasound measurements of D, PSV, EDV, and RI was good.
CONCLUSIONS: The repeatability of water immersion ultrasound is better than that of contact ultrasound in the measurement of the dorsalis pedis artery. Water immersion ultrasound can improve the near-field resolution of superficial tissues and increase the display of the lengths of blood vessels in images, thereby suggesting its superiority in ultrasound examination of dorsalis pedis arteries.
METHODS: Two senior sonographers measured the diameter of the dorsalis pedis artery (D) of 56 healthy volunteers, measuring at the same location and at different time points using water immersion and contact ultrasound. Color Doppler ultrasound was used to measure the hemodynamics of the dorsalis pedis artery, including peak systolic velocity (PSV), end diastolic velocity (EDV), and resistance index (RI). The interclass correlation coefficient (ICC) was used to evaluate the intraobserver and interobserver repeatability for each group\'s measurements.
RESULTS: The intraobserver and interobserver reproducibility of D, PSV, EDV, and RI measurements by water immersion ultrasound was very good. The intraobserver and interobserver reproducibility of the contact ultrasound measurements of D, PSV, EDV, and RI was good.
CONCLUSIONS: The repeatability of water immersion ultrasound is better than that of contact ultrasound in the measurement of the dorsalis pedis artery. Water immersion ultrasound can improve the near-field resolution of superficial tissues and increase the display of the lengths of blood vessels in images, thereby suggesting its superiority in ultrasound examination of dorsalis pedis arteries.
摘要：
目的：在比较浸入式超声和接触式超声测量的足背动脉内径和血流动力学参数的可重复性方面，分析了影响测量准确度和重复性的因素。本研究旨在为皮瓣移植前足背动脉的超声评估提供更好的方法。
方法：两名高级超声医师测量了56名健康志愿者的足背动脉（D）的直径，使用水浸和接触超声在相同位置和不同时间点进行测量。采用彩色多普勒超声测量足背动脉血流动力学,包括峰值收缩期速度（PSV），舒张末期血流速度(EDV),和阻力指数(RI)。使用类间相关系数（ICC）来评估每组测量的观察者内部和观察者之间的可重复性。
结果：D的观察者内和观察者间再现性，PSV,EDV,水浸超声RI测量非常好。D的接触式超声测量的观察者内和观察者间再现性，PSV,EDV,RI很好.
结论：在足背动脉的测量中，水浸超声的可重复性优于接触超声。水浸超声可以提高浅表组织的近场分辨率，增加图像中血管长度的显示，从而表明其在足背动脉超声检查中的优越性。
方法：两名高级超声医师测量了56名健康志愿者的足背动脉（D）的直径，使用水浸和接触超声在相同位置和不同时间点进行测量。采用彩色多普勒超声测量足背动脉血流动力学,包括峰值收缩期速度（PSV），舒张末期血流速度(EDV),和阻力指数(RI)。使用类间相关系数（ICC）来评估每组测量的观察者内部和观察者之间的可重复性。
结果：D的观察者内和观察者间再现性，PSV,EDV,水浸超声RI测量非常好。D的接触式超声测量的观察者内和观察者间再现性，PSV,EDV,RI很好.
结论：在足背动脉的测量中，水浸超声的可重复性优于接触超声。水浸超声可以提高浅表组织的近场分辨率，增加图像中血管长度的显示，从而表明其在足背动脉超声检查中的优越性。
