Conclusion Gender， age， and hypertension are independent risk factors for LA. We think that the deregulation or lost control. of small blood vessels in the deep end branches of the brain are the initiating factors for LA formation. Compared with the non-LA group， the LA group is more prone to stroke. The higher LA classification， the greater probability of stroke. LA increases the difficulty of functional recovery in the strokers.

    [Key words]：leukoaraiosis;white matter hyperintensities ; magnetic resonance imaging;brain ischemia;risk factors;stroke

    脑白质疏松症(1eukoaraiosis ......