- 期刊
Distribution of Cerebral Infarcts on Computed Tomography
缺血性腦中風的病變分佈－電腦斷層攝影之研究
摘要
缺血性腦中風的病變分佈情形相當重要，但文獻上這方面的研究並不完整。 我們以1984 年因缺血性腦中風住進本院的病人為對象，就電腦斷層攝影上的病變做了回顧性的分析。凡是無暫時性腦缺血發作或腦中風病史，且電腦斷層攝影上僅有的一個病變能與臨床檢查配合的病人歸為A組，其他病人歸為B組。電腦斷層攝影上沒有病灶的病人，合併頭頸部創傷、結締組織疾病、惡性血液疾病、腦膜炎的病人，以及因腦血管攝影或放射線治療導致腦中風之病人均未列入分析。A組有63位病人，年紀37至100歲，平均63.5歲；B組有110位病人，年紀48至84歲，平均64.4歲。 A組病灶以侵犯大腦皮質者最多（49.2 % )，而B組則是大腦皮質下的白質（含放射冠）最常見（31.7 %）。可見無症狀的病灶和腔隙狀態（lacunar state）的病灶對整個分佈的情形有很大的影響。 由A組分析結果得知，有症狀的病灶中47.6％是腔隙（lacune )；而且這些腔隙位於豆狀核(12.7 % )，內囊（12.7 % )，和大腦皮質下的白質（11. 1 %）的百分比幾乎相同。
關鍵字
無資料並列摘要
Locations of cerebral infarcts on computed tomography were analyzed on all patients admitted for ischemic stroke or status lacunaris in 1984. Patients who had only one symptomatic infarct, without histories of strokes or transient ischemic attacks, were allocated to group A, the rest made up group B. Group A showed that 47.6% of symptomatic infarcts were lacunes with similar percentages in the following areas: lenticular nucleus (12.7%)., internal capsule (12.7%), and subcortical white matter (11.1%). In group A, the cortext (49.2%) was the most common site of infarction, while in group B, it was the subcortical white matter (31.7%).. However, if the structures supplied by the basal perforating arteries (basal ganglia, thalami, and internal capsules) were considered as a whole, this area (4 1.8%) was the most common site for infarcts in group B. Thus, asymptomatic infarcts and those of status lacunaris contributed greatly to the overall distribution of cerebral infarcts.