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題 名 | Role of Diffusion-Weighted Imaging and Proton MR Spectroscopy in Distinguishing between Pyogenic Brain Abscess and Necrotic Brain Tumor=擴散加權影像及質子磁共振譜應用於鑑別細菌性腦部膿瘍及壞死性腦部腫瘤所扮演之角色 |
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作 者 | 賴炳宏; 許書雄; 盧玉強; 丁尚武; | 書刊名 | Acta Neurologica Taiwanica |
卷 期 | 13:3 2004.09[民93.09] |
頁 次 | 頁107-113 |
分類號 | 415.812 |
關鍵詞 | 擴散加權影像; 質子磁共振譜; 細菌性腦部膿瘍; 壞死性腦部腫瘤; Brain abscess; Brain tumor; Diffusion MR imaging; MR spectroscopy; |
語 文 | 英文(English) |
英文摘要 | Brain abscesses and brain tumors may have similar clinical presentations. For example, only 50% brain abscess patients have fever, which could be masked by corticosteroid therapy. Also, the differential diagnosis of brain abscesses versus cystic or necrotic tumors may be difficult based on computed tomography (CT) or magnetic resonance (MR) imaging findings. However, the strategies of management for abscess and neoplasm are very different, and it is especially imperative to have a correct diagnosis before any surgical intervention of cystic brain lesions. The MR special techniques, e.g. diffusion-weighted imaging (DWI) and proton (1H) MR spectroscopy, are useful as additional diagnostic modalities for differentiating brain abscesses from cystic or necrotic brain tumors. DWI shows high signal intensity in most cases of pyogenic abscesses and low signal intensity in most cases of cystic or necrotic tumors. MR spectroscopy shows characteristic metabolites in pyogenic abscesses, distinct from those in cystic or necrotic tumors. |
本系統中英文摘要資訊取自各篇刊載內容。