The average ADC,the(average) relative ADC(rADC),and the ADC or rADC from the center to the periphery of the lesion were calculated. Results The average ADC and the average rADC of hyperacute and acute infarction(lesion) depressed obviously.

• 其中超急性8例次,急性期3 5例次,亚急性期2 0例次,慢性期2 5例次,测量各期梗死病灶平均ADC值及平均相对ADC(rADC)值,并分别测量梗死灶中心至病灶边缘的ADC值及rADC值。