下肢动脉超声造影的初步研究

目的 探讨经静脉声学造影剂对下肢动脉彩色血流信号的增强作用，方法，19例患者分为2组；（1）正常组13例；（2）血管病变组6例，超声造影剂经左前臂浅静脉注射。结果 正常下肢动脉经造影剂增强后表现彩色血流信号增多，血流束增宽，4例股，国动脉闭塞者造影增强后管腔内仍无彩色血流信号，在闭塞管腔远侧，见3例胫前和1例胫后动脉内有彩色血流，上段有侧支血流进入，另2例患者胫前和颈后动脉彩色血流信号稀少，经造影增强后彩色血流信号增多并有充盈缺损，X线血管造影亦证实管腔有狭窄存在，结论 经静脉超声造影剂能够显著增强下肢动脉彩色血流信号，有助于肢血管病变的诊断。

The preliminary investigation of contrast sonography in lower limb arteries

Objective To investigate the enhancement of color Doppler signals in lower limb arteries by intravenous ultrasound contrast agent.Methods Nineteen cases examined were divided into two groups: Group I consisted of 13 normal cases; group II 6 cases with lower limb artery diseases. The contrast agents were administrated through forearm veins.Results The color Doppler signals and flow width were all increased in normal lower limb arteries after the contrast agent was injected. No color Doppler signals were showed in 4 closed femoral arteries (FA) and popliteal arteries(PA) after enhancement of contrast agent, but the color flow were seen in 3 anterior tibial arteries (ATA) and 1 posterior tibial artery (PTA), which came from lateral vessels in the near end of ATA and PTA. In another 2 cases, a few color Doppler signals were showed in ATA and PTA before contrast admitted, but the color Doppler signals were increased and local color defect were presented after contrast admitted, in which the stenosis of arteries were confirmed by angiography.Conclusions Intravenous ultrasound contrast agent could give rise color Doppler signals in lower limb arteries, and help to make lower limb artery disease diagnosis to a more accurate extent.