MRI图像中SAH与脑脊液信号强度几乎相同,难以鉴别。采用fluid attenuated inversion recovery(FLAIR)法,设定长T_1,延长TE时间,可以得到对T_1弛豫时间影响较小,对T_2弛豫时间影响较大的T_2加权图像,此法可充分抑制脑脊液信号得到满意的图像。作者用FLAIR法对37例破裂脑动脉瘤患者进行检查并与CT比较。男14例,女23例。年龄30岁～77岁, MRI images of SAH and CSF signal intensity is almost the same, it is difficult to identify. Using the fluid attenuated inversion recovery (FLAIR) method, setting the long T_1 and prolonging the TE time can obtain the T_2-weighted images that have less effect on the T_1 relaxation time and greater influence on the T_2 relaxation time. This method can inhibit the cerebrospinal fluid signal Satisfied with the image. The authors examined 37 patients with ruptured cerebral aneurysms using FLAIR and compared them to CT. There were 14 males and 23 females. Age 30 years old to 77 years old,