结论诊断主动脉疾病综合应用螺旋ct的各种技术可基本取代X线血管造影，其为临床提供了一种可靠的诊断手段。
Conclusions Application of combined techniques of spiral CT can basically replace X-ray angiography in the diagnosis of aortic diseases. It provides another reliable modality for clinics.
本文论述了利用数字相减处理技术增强血管造影X线影象的基本原理。
This paper discusses the fundamentals of applying digital subtractive processing technique in intensifying images obtained by X-ray vascular angiography.
方法以小型猪为肺栓塞、肺梗死实验动物模型，进行X线平片、核素灌注扫描、螺旋CT、血管造影检查。
Methods The pig experimental models of pulmonary embolism and infarction were examined by X ray, ventilation perfusion scanning, helical CT, angiography.
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