MRI结合动脉造影检查在头颈部血管畸形中的应用价值

Diagnostic Values of MRI in Combination with DSA in Vascular Malformations of the Head and Neck

目的 :建立头颈部血管畸形合理的影像检查流程。方法 :采用磁共振 (MRI)检查 45例头颈部血管畸形患者 ,其中 15例还进行了增强CT检查 ,15例进行了动脉造影 (DSA)检查。比较这 3种检查手段的影像特征。结果 :MRI对各种头颈部血管畸形检查都有意义 ,多于其它任何一种血管影像方式可提供的病变信息。但在显示高流速及混合性血管畸形的供应动脉及回流静脉方面 ,DSA明显优于MRI。结论 :以MRI作为头颈部血管畸形的最初检查手段 ,在高流速及混合性血管畸形中结合DSA。

Objective:To evaluate prospectively diagnostic values of magnetic resonance imaging (MRI) as the initial examination for vascular malformations of the head and neck, and establish a flowchart based on radiodiagnostic features.Methods: 45 patients with vascular malformations of the head and neck were evaluated prospectively with MRI. MRI was followed by angiography in 15 patients, contrast enhanced CT in 15 patients. MRI was performed by using spin echo pulse sequences with Philips Gyroscan NT 1.0 Teslaunit.Results: In all cases, MRI demonstrated usefully, and there was no other single imaging modality that could provide information about internal structures and flow characteristics as much as MRI. It made differentiation between high flow and low flow lesions obvious, however MRI was inferior to angiography in delineation of feeder vessels.Conclusion: MRI can be used as the initial methods for diagnosis of vascular malformations in the head and neck, and could be combined with angiography in cases with high flow or combined flow lesions.\;