头颈部多排螺旋CT血管造影对后循环缺血的诊断价值

Value of computed tomographic angiography in patients with posterior circulation ischemia

目的探讨后循环缺血患者行头颈部多排螺旋CT血管造影（CTA）检查的价值。方法对120例临床诊断为后循环缺血的患者行头颈部CTA检查，观察血管狭窄部位、受累血管数目并判断狭窄程度。结果120例患者中有血管病变者100例（83．3％），其中单纯前循环病变16例（13．3％），单纯后循环病变40例（33．3％），前后循环同时病变44例（36．7％）；其余20例（16．7％）CTA未见异常。累及两条及两条以上血管≥2条者63例（52．5％）。结论头颈部CTA是一种简便、快速、灵活、安全的检查方法，为寻找病灶、指导手术提供了一种可靠、客观、实用的影像资料，对后循环缺血的诊断具有重要价值。

Objective To assess the value of computed tomographic angiography（CTA） in the diagnosis of posterior circulation ischemia（PCI） by analyzing the results of CTA. Methods CTA were performed in 120 patients with PCI. The locations and numbers of the arteries were observed, and the degree of stenosis were assessed. Results Of the 120 cases, 100 cases （83.3%） were with cerebrovascular lesions ,including 16 cases （ 13.4% ） of anterior circulation lesions ,40 cases （33.3%） of posterior circulation lesions and 44 cases （36.7%） with both anterior and posterior circulation lesions. In all patients, there were 20 cases （16.7%） without abnormal blood vessel and 63 cases （52.5%） with two or more lesions. Conclusion CTA is a simple,quick and reliable examine method,and provides reliable ,objective and practical imaging information for guiding surgery.