Spencer M P, Whisler D
Stroke. 1986 Sep-Oct;17(5):916-21. doi: 10.1161/01.str.17.5.916.
Forty-two intracranial internal carotid arteries were visualized by both arteriography and 2 MHz pulse ultrasonic Doppler examinations. The intracranial internal carotid artery Doppler signals were studied at 5-7 cm depth behind the eyelid using frequency spectral analysis. Stenosis criteria were developed and methods of avoiding confusion with collateral effects devised. Among 33 intracranial ICAs visualized on the arteriograms, 22 were normal without stenosis and 11 displayed some degree of stenosis ranging from 20 to 75 percent. An additional 7 were totally occluded. Doppler criteria of stenosis representing elevated frequencies and symmetrical prominent low frequencies (SPLF) were utilized and separated from collateral effects to provide an overall accuracy of the technique of 88 percent with a 95 percent specificity and a 73 percent sensitivity. The technique appears sufficiently promising to justify further development and utilization.
通过动脉造影和2兆赫脉冲超声多普勒检查对42条颅内颈内动脉进行了显像。使用频谱分析在眼睑后5 - 7厘米深度研究颅内颈内动脉的多普勒信号。制定了狭窄标准，并设计了避免与侧支循环效应混淆的方法。在动脉造影片上显示的33条颅内颈内动脉中，22条正常无狭窄，11条显示出20%至75%不等程度的狭窄。另外7条完全闭塞。采用代表频率升高和对称突出低频（SPLF）的狭窄多普勒标准，并将其与侧支循环效应区分开来，该技术的总体准确率为88%，特异性为95%，敏感性为73%。该技术似乎很有前景，值得进一步开发和应用。
