Burbank F H, Enzmann D, Keyes G S, Brody W R
Radiology. 1984 Sep;152(3):725-9. doi: 10.1148/radiology.152.3.6379746.
A hybrid digital subtraction angiography technique and noise-reduction algorithm were used to evaluate the carotid bifurcation. Temporal, hybrid, and reduced-noise hybrid images were obtained in right and left anterior oblique projections, and both single- and multiple-frame images were created with each method. The resulting images were graded on a scale of 1 to 5 by three experienced neuroradiologists. Temporal images were preferred over hybrid images (average score = 3.2 and 2.4, respectively). The percentage of nondiagnostic examinations, as agreed upon by two readers, was higher for temporal alone than temporal + hybrid (4 and 1, respectively). In addition, also by agreement between two readers, temporal + hybrid images significantly increased the number of bifurcations seen in two views (87%) compared to temporal subtraction alone (64%).
采用一种混合数字减影血管造影技术和降噪算法来评估颈动脉分叉处。在右前斜位和左前斜位投影中获取了时间分辨图像、混合图像和降噪混合图像，并且每种方法都创建了单帧和多帧图像。三位经验丰富的神经放射科医生对所得图像进行了1至5分的评分。时间分辨图像比混合图像更受青睐（平均评分分别为3.2和2.4）。两位读者一致认为，仅时间分辨图像的非诊断性检查百分比高于时间分辨+混合图像（分别为4%和1%）。此外，同样根据两位读者的一致意见，与单独的时间减影相比，时间分辨+混合图像显著增加了在两个视图中可见的分叉数量（87%对64%）。
