白质疏松(LA)是老年人脑CT的常见表现,尤其多见于卒中、高血压或痴呆的老年人。许多人认为,LA由局灶性脑缺血造成。但是,其确切的机制仍然不清。颅外颈动脉病被公认为是卒中和短暂脑缺血发作(TIA)的病因之一。因此,可以推测,血流动力学有明显变化的高度颈动脉狭窄可能与LA的发病机理有关。本研究旨在探讨高度颈动脉狭窄与LA的关系。 White matter lobe (LA) is a common manifestation of brain CT in the elderly, especially in the elderly with stroke, hypertension or dementia. Many believe that LA is caused by focal cerebral ischemia. However, the exact mechanism remains unclear. Extracranial carotid disease is recognized as one of the causes of stroke and transient ischemic attack (TIA). Therefore, it can be speculated that hemodynamic significant changes in high carotid artery stenosis may be related to the pathogenesis of LA. This study aimed to investigate the relationship between high carotid artery stenosis and LA.