Strank H, Jaeger U, Teifke A
Klinik mit Poliklinik für Radiologie, Universitätskliniken Mainz.
Ultraschall Med. 1995 Aug;16(4):172-9.
To diagnose possible renal artery stenosis especially in case of multiple renal arteries by intrarenal colour-coded Duplex sonography.
In 50 hypertensive patients lobar and interlobar arteries were looked for at 3 different levels. Analysis included the determination of the early systolic acceleration time and the assessment of the Doppler waveform, especially the "tardus-parvus" phenomenon. Intraarterial angiography was performed in all patients the next day.
In 48/50 patients the sonographic investigations were sufficiently evaluable. Angiography showed haemodynamically relevant stenosis in 13 patients, in 4 patients bilaterally. In 21 patients (42%) multiple renal arteries were found. Sensitivity and specificity in the diagnosis of renal artery stenosis was 77% respectively 46% (threshold value > or = 0.120 s). In 10/17 angiographically verified haemodynamically relevant renal artery stenosis a change of the Doppler waveform was noted; sensitivity in the diagnosis of renal artery stenosis was 69%, specificity 90%.
Intrarenal colour-coded Duplex sonography cannot be recommended as a screening tool for renal artery stenosis.
通过肾内彩色编码双功超声检查诊断可能存在的肾动脉狭窄，尤其是在存在多条肾动脉的情况下。
对50例高血压患者在3个不同层面寻找叶间动脉和段间动脉。分析包括早期收缩期加速时间的测定以及多普勒波形的评估，尤其是“迟缓-低平”现象。次日对所有患者进行动脉内血管造影。
在50例患者中的48例，超声检查结果可充分评估。血管造影显示13例患者存在血流动力学相关狭窄，4例为双侧狭窄。21例患者（42%）发现有多条肾动脉。诊断肾动脉狭窄的敏感性和特异性分别为77%和46%（阈值≥0.120秒）。在17例经血管造影证实的血流动力学相关肾动脉狭窄患者中，10例观察到多普勒波形改变；诊断肾动脉狭窄的敏感性为69%，特异性为90%。
肾内彩色编码双功超声检查不能推荐作为肾动脉狭窄的筛查工具。
