脉冲反向谐波超声造影诊断肾动脉狭窄的初步观察

Renal Artery Stenosis and Pulse Inversion Harmonic Contrast Ultrasound Imaging

目的：探讨脉冲反向谐波声造影诊断肾动脉狭窄的可行性。材料和方法：对31例临床疑诊为肾动脉狭窄患者进行经静脉脉冲反向谐波声造影,并与X线血管造影结果对比。结果：22例肾动脉正常,管腔呈条带状强回声,宽度均匀；9例肾动脉起始段有充盈缺损,其中单侧6例,双侧3例,充盈缺损范围0．5～1．3cm,管腔狭窄程度50%～98%,与X线血管造影相符。结论：脉冲反向谐波声造影能清楚显示肾动脉,将有可能成为诊断肾动脉狭窄、闭塞的方法之一。

Purpose： To study the feasibility of pulse inversion harmonic contrast imaging （PIHCI） in diagnosing renal artery stenosis （RAS）. Materials and Methods： Thirty-one cases clinically suspected of RAS were examined with PIHCI. The results were compared with that of DSA. Results： Along the normal renal arteries in 22 cases , a ＂band-like＂ strong echo of uniform width was seen in PIHCI. Defect of contrast enhancement was found in the proximal part of renal artery in 9 cases of RAS, unilaterally in 6 and bilaterally in 3. The length of the defect was 0.5 - 1.3cm, with 50% -98% stenosis of the lumen. The results were in accordance with that of DSA. Conclusion： The renal arteries and RAS can be clearly and accurately delineated by PIHCI.