O'Leary D H, Potter J E, Clouse M E
Department of Radiology, New England Deaconess Hospital, Boston, Massachusetts.
Acta Radiol Suppl. 1986;369:11-3.
Between 1979 and 1985, non-invasive testing was done on 896 carotid arteries prior to angiography. The non-invasive studies included B-scan ultrasound, Doppler, and oculoplethysmography. Estimates of per cent stenosis arrived at by the non-invasive reader was correlated with the degree of stenosis found at angiography. The Pearson correlation coefficient for agreement between the non-invasive studies and angiography was 0.86. The mean absolute difference was 11 per cent. In 50 per cent of cases the results of the two examinations were identical. In 73 per cent of instances the non-invasive result was within 10 per cent of that of angiography. These results indicate that non-invasive testing can be highly accurate in estimating carotid stenosis and can be sustained over time.
1979年至1985年间，在血管造影术前对896条颈动脉进行了无创检测。无创研究包括B超、多普勒和眼体积描记法。无创检查者得出的狭窄百分比估计值与血管造影术中发现的狭窄程度相关。无创研究与血管造影术之间一致性的Pearson相关系数为0.86。平均绝对差异为11%。在50%的病例中，两项检查结果相同。在73%的情况下，无创检测结果与血管造影术结果相差在10%以内。这些结果表明，无创检测在估计颈动脉狭窄方面可以非常准确，并且随着时间的推移可以保持这种准确性。
