Digital subtraction angiography (DSA) is an important technology in both medical diagnoses and interposal therapy, which application is very universal.

数字减影血管造影(DSA)是一种在医学诊断和介入治疗中起重要作用的技术，应用十分广泛。

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Objective:To evaluate the haemodynamic change and its role in the pathogenesis of avascular necrosis of the femoral head(ANFH)by selective digital subtraction angiography(DSA).

目的：通过股动脉数字减影血管造影（DSA）探讨股骨头缺血性坏死（ANFH）的血液动力学改变及其在发病中的作用。

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Objective To investigate the value of digital subtraction angiography (DSA) in diagnosis and treatment of ischemic cerebrovascular disease.

目的探讨数字减影血管造影(DSA)在缺血性脑血管病检查及治疗中的价值。

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