一种通过多普勒超声定量评估颈动脉狭窄的新方法：运用连续性原理。
A novel method to quantify carotid artery stenosis by Doppler ultrasound: Using the continuity principle.
作者信息
Wong Christopher B, Wong Joseph C
机构信息
Conroe Regional Medical Center, Conroe;
出版信息
Int J Angiol. 2010 Summer;19(2):e86-90. doi: 10.1055/s-0031-1278371.
BACKGROUND AND PURPOSE
A novel method to quantify carotid artery stenosis by using the continuity principle was evaluated. It was hypothesized that the novel method improved the accuracy of carotid ultrasound in assessing carotid artery stenosis.
METHODS
Forty-nine patients were retrospectively studied. They were at a high risk for stroke and myocardial infarction, with significant cardiovascular risk factors. They were studied by carotid ultrasound as well as by one of the accepted gold standard techniques (computed tomography, magnetic resonance imaging or angiography). The cross-sectional areas of the narrowed part of the carotid arteries were measured using the continuity principle, and the percentage stenosis was thus calculated.
RESULTS
The analyses showed that the combination of the conventional and novel criteria (ie, classifying a case as significant only if its stenosis was 67% or greater and its peak systolic velocity was 130 cm/s or greater) conferred the highest accuracy in predicting significant carotid stenosis compared with the gold standard techniques.
CONCLUSION
From a practical point of view, the combined criteria might be useful for improving the accuracy of carotid ultrasound in predicting significant carotid stenosis.
背景与目的
评估一种利用连续性原理量化颈动脉狭窄的新方法。研究假设该新方法可提高颈动脉超声评估颈动脉狭窄的准确性。
方法
对49例患者进行回顾性研究。这些患者有中风和心肌梗死的高风险，伴有显著的心血管危险因素。对他们进行了颈动脉超声检查以及一种公认的金标准技术（计算机断层扫描、磁共振成像或血管造影）检查。利用连续性原理测量颈动脉狭窄部位的横截面积，从而计算狭窄百分比。
结果
分析表明，与金标准技术相比，传统标准和新标准相结合（即仅当狭窄率为67%或更高且收缩期峰值速度为130 cm/s或更高时将病例分类为显著狭窄）在预测显著颈动脉狭窄方面具有最高的准确性。
结论
从实际角度来看，联合标准可能有助于提高颈动脉超声预测显著颈动脉狭窄的准确性。
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