巨大蛇形动脉瘤患者的影像学特点初探  

Imaging features of patients with giant serpentine aneurysm

作　　者：饶志文[1] 孔朝红[2] 顾雪琴[1] 

机构地区：[1]湖北省荆州市江陵县人民医院影像科,湖北荆州434100 [2]武汉大学人民医院神经内一科,武汉430060

出　　处：《临床与病理杂志》2015年第3期402-405,共4页Journal of Clinical and Pathological Research

摘　　要：目的：研究颅内巨大蛇行动脉瘤（giant serpentine aneurysm，GSA）患者的影像学特征。方法：连续收集我院2010年3月～2014年3月经本院或外院CT和MRI／MRA诊断的GSA患者7例，总结患者的影像学特点，结合文献进行分析讨论。结果：GSA患者的影像学特点主要表现为：CT显示病灶为不均质高密度占位效应，可见周围脑组织水肿和蛋壳样钙化，CT增强扫描显示瘤壁略强化，相对低密度区均一强化。MRI主要表现为边界清楚、呈混杂信号的占位性病变，主要为不同强度短T1、长T2信号。MRI增强扫描可见厚壁的瘤壁有明显强化，内部血栓无强化，其内血流通道则显示为高信号。CTA和MRA可以较为清晰的显示颅内动脉蛇血管通道和走形。结论：GSA患者的影像学表现具有相对的特异性，CT／MRI扫描可作为其临床初步筛查和辅助诊断手段之一。Objective： To explore the imaging characteristics of patients with giant serpentine aneurysm （GSA）. Methods： Continuous collected seven cases menstrual GSA patient diagnosed in our hospital or other hospitals, through CT and MRI/MRA diagnosing from March 2010 to March 2014. First we summarized the patient＇s CT imaging features, then discussed them combined with the literature. Results： GSA imaging features in patients mainly as. CT scan showed lesions was not homogeneous high-density mass effect, showing the surrounding brain tissue edema and ＂eggshell calcification＂; CT enhanced scan showed the aneurysm wall slightly strengthened, uniform strengthen relatively low density area. MRI mainly described as clear boundary, which was mixed with signal lesions, mainly for the different intensities of short T1, long T2 signal. Enhanced MRI scan showed a thick wall had significantly enhanced the tumor; no enhancement of internal thrombosis, blood flow within the channel is displayed as a high signal. CTA and MRA can be more clearly show the intracranial vascular channels and snakes out of shape. Conclusion： Imaging findings in patients with GSA has relatively specificity. CT/MRI scan can be used as an initial screening of one of its clinical and ancillary diagnostic tools.

关 键 词：巨大蛇行动脉瘤 影像 诊断 特点 

分 类 号：R743[医药卫生—神经病学与精神病学] R816.1[医药卫生—临床医学] R445.2