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对66例多灶性脑梗塞并脑白质疏松、脑室扩大患者的症状、体征、CT及MRI表现进行分析。并行头颅CT图像作双额径(BF)、双尾径(BC)及Ⅲ脑室外侧至半球外侧裂径(ⅢV—S)与其相应颅腔径比率测定。结果表明有痴呆患者BC比率增加,ⅢV—S比率减少,与健康对照组及脑梗塞并白质疏松非痴呆组比较,差异有显著意义。我们认为多灶性脑梗塞并白质疏松其产生痴呆的原因与Ⅲ脑室外侧壁、丘脑和脑岛之间的结构损害累及Papez环路有关。
66 patients with multifocal cerebral infarction and leukoaraiosis, ventricular enlargement in patients with symptoms, signs, CT and MRI findings were analyzed. Parallel head CT images were used to determine the ratio of double-forehead diameter (BF), double-tail diameter (BC) and lateral ventricular hemisphere (ⅢV-S) to corresponding cranial diameter. The results showed that patients with dementia increased BC ratio, Ⅲ V-S ratio decreased, compared with the healthy control group and cerebral infarction and non-dementia group of white matter lover, the difference was significant. We think that the causes of dementia with multifocal cerebral infarction and leukosis are associated with the involvement of the Papez loop in the structural damage between the extravertebral ventricular wall, the thalamus and the insula III.