Felix R, Scherholz K P
Radiologe. 1978 Nov;18(11):412-22.
Systematic classification of roentgen signs according to anatomical and functional alterations is described as follows: Direct roentgen signs of embolism without hemorrhage and without infarction, indirect roentgen signs of embolism without hemorrhage and without infarction, indirect roentgen signs of embolism with hemorrhage, indirect roentgen signs of embolism with infarction, and roentgen signs of microembolism. Diagnostic security of conventional chest films, technique and "timing" of pulmonary angiography, direct and indirect roentgen signs of embolism in pulmonary angiography, and traumatic fat embolism are described.
根据解剖学和功能改变对X线征象进行系统分类如下：无出血和无梗死的栓塞直接X线征象、无出血和无梗死的栓塞间接X线征象、有出血的栓塞间接X线征象、有梗死的栓塞间接X线征象以及微栓塞的X线征象。描述了传统胸片的诊断安全性、肺血管造影的技术和“时机”、肺血管造影中栓塞的直接和间接X线征象以及创伤性脂肪栓塞。
