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頁籤選單縮合
題名 | Radiological Appearance of Extra-axial CNS Hemangioma=軸外中樞神經血管瘤的影像學表現 |
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作者 | 楊明祥; 陳啟昌; 陳文賢; 洪豪駿; 李三剛; | 書刊名 | 中華放射線醫學雜誌 |
卷期 | 27:4 2002.08[民91.08] |
頁次 | 頁183-189 |
分類號 | 415.938 |
關鍵詞 | 軸外中樞神經; 血管瘤; 電腦斷層; 磁振造影; Extra-axial hemangioma; Computed tomography; CT; Magnetic resonance imaging; MRI; |
語文 | 英文(English) |
中文摘要 | 軸外中樞神經血管瘤為不常見的中樞神經系統血管瘤。按照過去的報告,較多見的位置為中顱窩的土耳其鞍旁區域與脊柱的硬腦膜外空間。本研究收集本院自1992年以來的六個案例,其中三例位在脊椎,以硬腦膜外空間(epidural space)為主,另外三例出現在中顱窩的土耳其鞍旁區域。我們分析這六例的影像檢查發現,包括注射顯影劑前與後的電腦斷層(CT scan)(n=5),磁振造影(MRI)(n=6),及血管攝影(DSA)。在注射顯影劑前的電腦斷層為高密度的病變,注射顯影劑之後,為均勻高強度的顯影。在磁振造影的影像表現為,注射顯影劑前的T1為主影像中(T1WI),為低至均勻的訊號表現,注射顯影劑後的T1為主影像中(T1WI)為均勻高強度的顯影。在T2為主影像中(T2WI)為均勻高強度的訊號表現,依據如此的訊號表現及影像特徵。需要與腦膜瘤、神經性腫瘤、動脈瘤鑑別。本文可提供一些可能有用的鑑別診斷線索,以避免誤診。 |
英文摘要 | Extra-axial CNS hemangioma (EAH) is an uncommon vascular tumor in the central nervous system. The common sites are parasellar region of the middle cranial fossa and epidural space of spine. There are totally 6 cases in our hospital since 1992, in which three lesions were located in the epidural space of spine, and the others were at the parasellar region of middle cranial fossa. We analyzed the imaging findings of these 6 cases including pre- and post-contrast enhanced computed tomography (CT) (n=5), magnetic resonance imaging (MRI) (n=6) and angiography (n=2). Relative high attenuation lesion was noted on the pre-contrast CT scan, strong and homogenous con-trast enhancing pattern on the post-contrast CT scan. The MRI appearances were iso- to low signal intensity (SI) on T1WI and high SI on T2WI. All tumors (6/6) were strongly and homogeneously enhanced by Gadolinium DTPA. From the imaging appearances, the CT and MRI findings can offer some clues to differentiate the EAH from other tumors such as meningioma, neu-rogenic tumors, aneurysm. |
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