Laux U
Klin Monbl Augenheilkd. 1978 Nov;173(5):719-23.
Investigations of the initial phase of the angiogram and measurements of retinal circulation times require a rapid sequence angiography. Although almost all of the available cameras allow for 2 or 3 exposures per second, such rapid sequence angiograms are not performed routinely. Especially the patient's stress from 2 or 3 flashes per second is considerable making these investigations very difficult. We have introduced 3 modifications of the regular technique of rapid sequence angiography that greatly facilitate the procedure so that large numbers of patients can easily be investigated in clinical routine. 1. The regular fixation target in the Zeiss fundus camera has been replaced by a special diaphragm (Fig. 1) which will exclude part of the fundus from exposure to light. This way pictures are taken only of the disc and the peripapillary area which are most important for circulation studies. After completion of the rapid sequence the diaphragm can easily be removed and further pictures taken of regular size. 2. The fluorescein is injected by means of an automatic injector (Fig. 2) in order to obtain a concentrated dye bolus. 3. The sequence of the angiogram is controlled by an electronic timer (Fig. 3 a and b). The photographer can thus fully concentrate on the camera adjustment without worrying about dye injection or triggering the camera. The perfect standardisation obtained will facilitate the measurement of different circulation parameters later on the film.
对血管造影初始阶段的研究以及视网膜循环时间的测量需要快速序列血管造影。尽管几乎所有现有的相机都允许每秒进行2次或3次曝光，但这种快速序列血管造影并非常规操作。尤其是患者对每秒2次或3次闪光产生的压力相当大，使得这些检查非常困难。我们对快速序列血管造影的常规技术进行了3项改进，极大地简化了操作过程，从而使大量患者能够在临床常规检查中轻松接受检查。1.蔡司眼底相机中的常规固定目标已被一个特殊的光阑（图1）所取代，该光阑将排除眼底的一部分不被光线照射。这样，只拍摄视盘和视乳头周围区域的照片，这些区域对循环研究最为重要。快速序列完成后，光阑可轻松移除，然后拍摄常规尺寸的进一步照片。2.通过自动注射器（图2）注射荧光素，以获得浓缩的染料团注。3.血管造影的序列由电子定时器控制（图3a和b）。这样，摄影师就可以完全专注于相机调整，而不必担心染料注射或触发相机。所获得的完美标准化将有助于后续在胶片上测量不同的循环参数。
