Objective       To propose a new method for early detection of acute cerebral ischemia in rabbits

and establish an early diagnosis system for acute cerebral ischemia.     Methods         The cerebral ischemia rabbit model was established by bilateral carotid artery occlusion. The rabbits were divided into nonligation group

unilateral ligation group and bilateral ligation group. The rabbits of the 3 groups were detected for 1 h with a detection system based on magnetic induction phase shift spectroscopy (MIPSS).    Results      The results showed that under characteristic frequency (CF)

within 1 h

the average phase  shift of the nonligation group was -0.195°±0.099°

the average phase shift of the unilateral ligation group was -4.862°±1.150°

and the average phase shift of the bilateral ligation group was -9.303°±3.186°. The average phase shift of the unilateral ligation group and the bilateral ligation group was increased significantly compared with the control group(P0.05)

and the average phase shift of the bilateral ligation group was increased significantly compared with the unilateral ligation group (P0.05).      Conclusion     Detection system based on MIPSS implements the early diagnosis of acute cerebral ischemia in the rabbits

and can be used for distinguishing the varied ischemic severity in the rabbits.