彩色多普勒超声对下肢动脉急性血栓和慢性血栓的鉴别诊断

目的 探讨彩色多普勒超声在下肢急性动脉血栓和慢性动脉血栓鉴别诊断中的价值。方法对80支急性动脉血栓及244支慢性动脉血栓的二维及彩色多普勒超声特点进行分析，对病史、管壁结构、病变近段和远段流出道的血流动力学进行比较。结果急性动脉血栓和慢性动脉血栓在病程、管壁结构以及有无侧支建立方面有差别。两组病变近段、远段流出道最高血流速度和近端阻力指数间差异有统计学意义（P〈0．05），远段阻力指数差异无统计学意义（P〉0．05）。结论彩色多普勒超声是急性动脉血栓和慢性动脉血栓鉴别诊断的最佳无创检查方法。

Differential diagnosis of acute and chronic thrombosis in leg arteries using color Doppler ultrasonography

Objective To explore the differential diagnostic value of color-Doppler technique in acute and chronic thrombosis of leg arteries. Methods The two-dimensional and color Doppler ultrasonographic characteristics were analyzed in acute thrombostic event in 80 leg arteries and chronic thrombostic events in 244 leg arteries. And some parameters (history, the vessel wall structures, hemodynamic of inlet and outlet at the lesion) were compared, too. Results There existed a significant difference in history, vessel wall structure and the establishment of collaterals between the acute and chronic groups. And there were also significant difference in maximum blood velocity proximal and distal to the lesion and proximal resistant index between two groups(P< 0.05 ). However, no significant difference existed in resistant index distal to the lesion between the two groups. Conclusions Color Doppler ultrasonography is the best method in differential diagnosis of acute and chronic thrombostic events.