介绍四例头颈部肿瘤典型病例应用DSA检查情况，讨论了DSA在头颈部肿块诊断上的作用。
The results of four tumors in head and Neck examined by digital subtraction angiography (DSA) were reported.
目的研究不同ct灌注采样方法对头颈部软组织肿块性病变评价的影响。
Objective the aim of this study was to compare the differences in sampling methods of ct perfusion for soft tissue neoplasms in the head and neck regions.
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