Venkataraman K, Beer R F, Mathews N P, Carl J R, Harrison E C, Turner A F, Finck E J
Radiology. 1980 Oct;137(1 Pt 1):43-7. doi: 10.1148/radiology.137.1.7422859.
Though thromboembolic complications are reportedly minimal in patients with Björk-Shiley aortic valve prostheses, massive thrombosis remains a major and often fatal problem. The authors observed massive thrombosis in 3 patients, only one of whom survived. In all three instances, the disk of the prosthesis was relatively radiolucent. With valves manufactured after late 1975, which contain a tantalum foil hoop, cineradiography is the most rapid and accurate method of showing the disk. A simple method of calculating the valve opening angle from the cineradiograph is described. It is suggested that serial cineradiographs might be useful in detecting lesser degrees of thrombosis and partial immobilization of the disk.
尽管据报道，接受比约克-希利主动脉瓣假体植入的患者血栓栓塞并发症极少，但大面积血栓形成仍然是一个主要问题，且常常是致命的。作者观察到3例大面积血栓形成，其中只有1例存活。在所有3例中，假体的瓣盘相对透X线。对于1975年末以后生产的带有钽箔环的瓣膜，电影X线摄影术是显示瓣盘最快速、准确的方法。本文描述了一种从电影X线照片计算瓣膜开口角度的简单方法。有人提出，系列电影X线照片可能有助于检测程度较轻的血栓形成及瓣盘的部分固定。
