| 谌业荣,余永强,钱银锋,张家文,张德志,方雷.颅内海绵状血管瘤的CT和MRI诊断[J].中国医学影像技术,2005,21(11):1686~1689 |
| 颅内海绵状血管瘤的CT和MRI诊断 |
| CT and MRI diagnosis of intracranial cavernous angioma |
| 投稿时间：2005-05-25 修订日期：2005-08-20 |
| DOI： |
| 中文关键词: 脑 血管瘤,海绵状 体层摄影术,X线计算机 磁共振成像 |
| 英文关键词:Brain Angioma, cavernous Tomography, X-ray computed Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的 对比分析脑内、外海绵状血管瘤(CA)的CT、MRI影像,进一步提高对颅内海绵状血管瘤的认识。方法 回顾性分析43例颅内CA患者的CT、MRI影像,其中脑内型37例,脑外型6例。CT平扫/增强为30/18例,MRI平扫/增强43/20例。结果 脑内型CA:CT平扫为混杂颗粒状稍高密度(22/25),3例呈高密度出血灶;MRI平扫可表现为Zabramskin Ⅰ型(11.9%)、Ⅱ型(83.4%)、Ⅲ型(4.7%),多呈短或等T1、稍长T2混杂信号且周边常伴明显 |
| 英文摘要: |
| Objective To improve the understanding of intracranial cavernous angioma (CA) by analyzing its CT and MR images. Methods Forty-three patients with intracranial CA, including 37 intracerebral CAs and 6 extracerebral CAs, were analyzed retrospectively. Results The intracerebral CA presented as slightly-high density with a granulo mixed center (22/25) or high density indicating hemorrhage (3/25) on plain CT. It could be manifested as type Ⅰ (11.9%), Ⅱ (83.4%) or Ⅲ (4.7%) on the basis of Zabramskin classification. Most of the intracerebral CAs appeared as hyperintense or isointense signal on T1WI and a mixed-hyperintense core surrounded by a hypointense halo on T2WI. Both on contrast-enhanced CT and Gd-DTPA enhanced MRI, the intracerebral CA demonstrated mild, slight enhancement or no enhancement. All six extracerebral CA located in parasellar region, which presented as isointensity (2/5) or slightly-hyperintensity (3/5) on plain CT and isointense signal or slightly hypointense signal on T1WI, but markedly hyperintense on T2WI. All extracerebral CA lesions demonstrated intensive enhancement on enhanced CT or Gd-DTPA enhanced MRI, which appeared as a "knead dough". Some of extracerebral CAs demonstrated typical peripheral enhancement on early phase and followed by centripetal fill-in of the contrast media with persistently strong enhancement on delayed-scan. Conclusion Most of the intracranial CAs have their characteristic features on CT or MR images, no matter of its intracerebral or extracerebral location. It should be emphasized that some intracerebral CAs could present as hemorrhage. |
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