60例脑海绵状血管瘤的磁敏感加权成像表现与分析

目的]探讨脑海绵状血管瘤的磁敏感加权成像（SWI）的影像学表现特征及其诊断价值。方法]经手术、DSA和/或MRI（MRA、SWI等）检查确诊的脑海绵状血管瘤60例。所有病例均行T1WI、T2WI及SWI序列扫描,其中28例行T1WI增强扫描。应用配对秩和及t检验对病灶检出数目及显示病灶范围进行比较。结果]本组病例单发40例（66.7%）,多发20例（33.3%）;SWI发现病灶316个,明显多于T1WI显示的64个（20.3%）和T2WI显示的77个（24.4%）（P〈0.05）;典型表现爆米花样或桑椹状混杂高信号,边缘呈低信号铁环征或高信号光环征（53.8%）。SWI与T2WI显示病灶面积分别为（3.39±5.68）cm2与（2.40±5.07）cm2（P〈0.05）。结论]SWI较常规MRI序列可检出更多微小病灶,在脑海绵状血管瘤的定性及定量诊断方面极具临床应用价值。

Reflect and diagnosis in the image of 60 cases with cerebral cavernous hemangioma by SWI

Objective] To investigate the image-features and clinical diagnostic value of cerebral cavernous hemangioma by SWI(Susceptibility Weighted Imaging).Methods] There were 60 patients with cerebral cavernous hemangioma who were confirmed by operation,DSA and/or MR(MRA,SWI et al) in the group.All of them were scanned by MR which included SET1WI,T2WI,and axis SWI,and 28 cases were additionally scanned with contrast enhancement scan.Paired rank sum test and t-test were used to detect the number and area of lesio...