输尿管结石彩色多普勒超声闪烁伪像的特征分析

The Characterization of Color Doppler Ultrasound Twinkling Artifact in Ureteral Calculi

摘要: 目的：探讨彩色多普勒闪烁伪像在诊断输尿管结石中的应用价值，并对其声像图特征进行分析。方法：回顾性分析253例经临床确诊为输尿管结石的声像图资料，按结石大小分为A、B、C三组，即A组长径 < 6 mm，B组6~10 mm和C组 > 10 mm，分别观察其闪烁伪像及声影的显示情况，并进行比较分析，根据闪烁伪像声像图特征对其进行分型。结果：1) 253例输尿管结石中，闪烁伪像发生率为93.3%，声影发生率为69.2%；各组间闪烁伪像发生率无显著性差异，组间声影发生率有显著性差异；A组与B组闪烁伪像与声影发生率有显著性差异。2) 根据闪烁伪像信号的形态及其空间分布对其分型，根据形态将其分为3型：条形、球形、星点形，其中条形所占比例最大(58.9%)；根据闪烁伪像与结石的位置关系将其分为3型：后方型、覆盖型、包绕型，其中后方型所占比例最大(56.8%)。结论：彩色多普勒超声闪烁伪像是超声诊断输尿管结石中的一种特征性表现，在诊断中具有重要的应用价值。闪烁伪像具有多种形态，与结石强回声有多种位置关系。

Abstract: Objective: To explore the application value of color Doppler twinkling artifact in ureteral calculi and analyze its sonographic features. Method: Retrospectively analyze the ultrasound images of 253 cases confirmed by the clinical evidence for the ureteral calculi, the stones are into A, B and C three groups according to their long diameter size, that are less than 6 mm for the A group, between 6 to 10 mm for B group and more than 10 mm for C group. Then, observe the display of twinkling arti-fact and sound shadow of the stone respectively and compare them. Analyze and classify the twin-kling artifact according to the characteristics. Result: 1) In 253 cases of the ureteral calculi, the overall incidence of twinkling artifact was 93.3%, and the total incidence of acoustic shadow was 69.2%. There was no significant difference in the rate of twinkling artifact among the three groups. The incidence of acoustic shadow recording in the three groups was significantly different. The in-cidence of twinkling artifact in group A and B was significantly different, while in group C there was no significant difference between the two. 2) According to its morphology and spatial distribution, the twinkling artifact is divided into three types, namely bar-shaped, spherical, star-shaped, of which bar-shaped accounted for the largest proportion, about 58.9%. According to the relationship between twinkling artifact and stone, it is also divided into three types, namely, the posterior type, the covering type and the wrapping type, of which the posterior type accounts for the largest pro-portion, about 56.8%. Conclusion: Twinkling artifact is a characteristic sonogram in ureteral calculi, and can be used as an ultrasound feature, which has important application value in its diagnosis. Twinkling artifact has a variety of forms, and it has a lot of positional relationship with the strong echo of the stones.