颅内海绵状血管瘤的影像学诊断

目的 探讨MRI、MRA和CT对颅内海绵状血管瘤的诊断价值。方法 回顾性分析经手术病理证实的颅内海绵状血管瘤26例患者的影像学资料。结果 26例中，16例行CT检查，23例行MRI检查，12例行MRA检查。所有病例都属脑内型，可位于脑内任何部位，单发病灶多见，周围无或轻度水肿。脑内型海绵状血管瘤MRI T2WI表现为桑椹状混杂高信号，周围有低信号环绕，增强后病灶大都无强化；MRA检查未见异常血管；CT平扫为稍高密度影。结论 颅内海绵状血管瘤的MRI表现较有特异性，综合MRI、MRA和CT表现可明确诊断。在颅内海绵状血管瘤的诊断方面MRI优于CT。

Diagnosis of intracranial cavernous hemangioma using imaging techniques

Objective To investigate value of CT, MRI, and MRA in diagnosis of intracranial cavernous hemangioma. Methods 26 patients with intracranial cavernous hemangioma proved by pathologic examination were retrospectively reviewed. 16 patients underwent CT scan, 23 underwent MRI and 12 underwent MRA. Results All lesions were situated anywhere inside brain. Single lesion was frequent, without or with slight edema around edema. MRI T2WI showed mulberry-like mixed hyperintensity, surrounded by hypointensity and free from being enhanced after contrast-enhancement. MRA did not show abnormal blood vessels. Plain scan of CT showed slight hyperintensity. Conclusion Intracranial cavernous hemangioma has characteristic manifestations on MRI. A combined usage of MRI, MRA and CT helps to confirm diagnosis. MRI is superior to CT in diagnosis of intracranial cavernous hemangioma.