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題 名 | Intracranial Acute Arterial Ischemia of the Anterior Circulation: Evaluation with Three-Dimensional Time-of-Flight Magnetic Resonance Angiography=急性前部血循環動脈缺血性腦中風:三維Time-of-Flight磁振血管造影評估 |
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作 者 | 賴炳宏; 楊建芳; 潘慧本; 陳坤煌; 盧玉強; 洪國華; | 書刊名 | 中華醫學雜誌 |
卷 期 | 62:1 1999.01[民88.01] |
頁 次 | 頁20-27 |
分類號 | 415.92 |
關鍵詞 | 缺血性腦中風; 磁振血管造影; 磁造影; Brain ischemia; Time-of-flight magnetic resonance angiography; Magnetic resonance imaging; |
語 文 | 英文(English) |
中文摘要 | 背景 自1983年至今10多年來,腦中風一直是造成國人死亡的第2大病因。腦 中風引起的相關疾病及死亡,造成的醫療成本上的花費是很大的。因此,早期診斷與治療腦 中風、提供新的技術來評估腦血管疾病是相當重要的。本研究針對50例急性前部血循環動 脈缺血性腦中風,來探討磁振血管造影合併傳統的磁造影,在急性腦中風診斷中的價值及重 要性。 方法 本回溯性研究共收納50位病人,每位病人於急性前部血循環動脈缺血性腦中風 發作1週之內,同時接受傳統的磁造影及磁振血管造影,並與其記載的病史相對照。其中5 位病人因無法合作,所以其磁振血管造影影像被認為沒有診斷價值而被排除在本研究外。 結果 45位病人中,有41位在T2磁造影影像的病變位置與臨床症狀相吻合;37位在 磁振血管造影影像中發現血管狹窄或阻塞。共23位病人的磁振血管造影能進一步地提供傳 統磁造影得不到的訊息。 結論 磁振血管造影所顯示的血管狹窄或阻塞,與磁造影影像所顯示的病變位置有相當 高的一致性。大部份的病例能以磁振血管造影來進一步地提供血管病變的訊息,以彌補傳統 磁造影之不足。磁振血管造影在評估缺血性腦中風的血管病變方面,是一種相當重要的工具。 |
英文摘要 | Background. Stroke has been the second most common cause of death, after cancer, in Taiwan since 1983. The cost of stroke to society in terms of morbidity, mortality and economics is profound. Heightened interest in the early diagnosis and treatment of acute stroke challenges neuroimagers to optimize available modalities and to develop new techniques for the evaluation of cerebrovascular disease. The aim of this study was to investigate the effectiveness of magnetic resonance angiography (MRA) in conjunction with spin-echo imaging in patients with acute brain infarction of the anterior circulation. Methods. Magnetic resonance imaging and three-dimensional Fourier transformed time-of- flight MRA studies, performed on 50 patients within one week after the onset of cerebral ischemia, were retrospectively reviewed and correlated with clinical records. Five of the 50 MRAs were considered nondiagnostic and excluded because of poor patient cooperation. Results. In 41 of the 45 cases, the area of infarct corresponding to the clinical deficit at the time of study was identified on T2-weighted spin-echo images. Arterial occlusions or severe stenoses that corresponded to ischemic manifestations were identified with MRA in 37 of the 45 patients. A focal discontinuity with decreased arterial caliber corresponded to stenosis and nonvisualization of distal branches represented arterial occlusion. MRA provided information for 23 cases not obtained from the MR images. Conclusions. Vascular lesions demonstrated on intracranial MRA show a high correlation with infarct distribution. MRA, which provides information adjunctive to conventional MR imaging in a majority of cases, is concluded to be an important component of the complete evaluation of brain infarction. |
本系統中英文摘要資訊取自各篇刊載內容。