Continuous‐Wave Versus Range‐Gated Pulsed Doppler Power Frequency Spectrum Analysis in the Detection of Carotid Arterial Occlusive Disease
Continuous‐Wave Versus Range‐Gated Pulsed Doppler Power Frequency Spectrum Analysis in the Detection of Carotid Arterial Occlusive Disease
复制标题
连续波与距离选通脉冲多普勒功率频谱分析在颈动脉闭塞性疾病检测中的比较
DOI：
10.1097/00000658-198607000-00004
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发表时间：
1986
影响因子：
9
通讯作者：
A. Fronek
中科院分区：
文献类型：
--
作者：
T. Harward;E. Bernstein;A. Fronek
本文比较了目前用于颅外颈动脉疾病检测的两种超声多普勒测速仪--连续波(CW)和距离选通脉冲(RP)多普勒系统。用CW多普勒对130条颈动脉分叉进行功率谱分析，用快速多谱勒系统对81条颈动脉进行功率谱分析。将检查结果与血管造影结果进行比较。峰值功率为50%的频率带宽(F50%)是定义频谱展宽的定量指标，CW系统检测到等于或大于50%直径缩小的狭窄的敏感性为93%，特异性为92%，准确性为92%。用RP多普勒诊断相同程度的狭窄，敏感性为94%，特异性为93%，准确性为93%。与血管造影分型为0~24%、25%~49%、5099%的缩径类型相比，CW多普勒PFSA的总准确率为85%，而RP多普勒的总准确率为86%。16个颈内动脉(ICA)闭塞中有15个被CW多普勒正确识别；8个ICA闭塞中有8个被RP多普勒正确识别。因此，这两种技术检测颈动脉疾病的结果具有可比性。为了便于研究和操作，具有可变采样量的快速多谱勒系统似乎是最理想的。然而，如果实用性和成本效益是最重要的，标准的CW系统是更好的。
Two types of ultrasonic Doppler velocity metering devices currently used in the detection of extracranial carotid artery disease, the continuous-wave (CW) and the range-gated pulsed (RP) Doppler systems, were compared in the present study. Power frequency spectrum analysis (PFSA) was performed on 130 carotid arterial bifurcations with a CW Doppler and 81 carotid arteries with an RP Doppler system. AH results were compared with angiographic findings. The frequency bandwidth at 50% peak power (f50%), a quantitative index for defining spectral broadening, detected stenoses equal to or greater than 50% diameter reduction with 93% sensitivity, 92% specificity, and 92% accuracy with the CW system. With the RP Doppler, the same degree of stenosis was identified with 94% sensitivity, 93% specificity, and 93% accuracy. Compared with angiographic classification into 0–24%, 25–49%, and 50–99% diameter reduction categories, CW Doppler PFSA and an 85% overall accuracy, and the RP Doppler overall accuracy was 86%. CW Doppler also correctly identified 15 of 16 internal carotid artery (ICA) occlusions; 8 of 8 ICA occlusions were correctly identified with the RP Doppler. Thus, both techniques detected carotid artery disease with comparable results. For research and ease of operation, an RP Doppler system with a variable sampling volume appears to be most desirable. However, a standard CW system is superior if utility and cost-effectiveness are of prime importance.