Pelz D, Fox A J, Vinuela F
J Can Assoc Radiol. 1985 Mar;36(1):37-40.
Oblique intravenous digital subtraction arteriography (IV-DSA) images of the neck were centered high to include the carotid bifurcations and siphons on one view in 80 consecutive patients being investigated for cerebral vascular atherosclerosis. Using a 27 cm image intensifier, these two important areas for atherosclerotic involvement were seen together on 68.1% of the images. In 25.6% of the images, the centering was too low to include the siphons on the film due to incorrect interpretation of facial anatomy on the oblique scout view. Careful attention to anatomic detail will allow correct centering in most patients. This will allow the bifurcations and siphons to be seen in profile together, thereby decreasing the number of film runs needed and the contrast volume given.
对80例连续接受脑血管动脉粥样硬化检查的患者进行颈部斜位静脉数字减影血管造影（IV-DSA）时，将图像中心置于高位，以便在一张图像上同时显示颈动脉分叉和虹吸部。使用27厘米影像增强器，在68.1%的图像上能同时看到这两个动脉粥样硬化累及的重要区域。在25.6%的图像中，由于对斜位定位像上面部解剖结构的错误解读，图像中心位置过低，胶片上未能显示虹吸部。对解剖细节予以仔细关注可使大多数患者获得正确的中心定位。这样能使分叉和虹吸部同时以侧位显示，从而减少所需的胶片曝光次数和造影剂用量。
