摘要
目的：比较液体衰减反转恢复（ＦＬＡＩＲ）序列和弥散加权成像（ＤＷＩ）在急性脑梗塞中的应用。方法：１４例急性脑梗塞患者接受ＦＬＡＩＲ和ＤＷＩＭＲ检查，评价病变的显示范围、边界及对比度，并计算病变区ＡＤＣ和ｒＡＤＣ。结果：ＦＬＡＩＲ序列和ＤＷＩ对病变的显示范围、对比均优于常规Ｔ２ＷＩ，以ＤＷＩ对病变显示更佳，病变区的平均ＡＤＣ为６．１３×１０－４ｍｍ２／ｓ，ｒＡＤＣ为５６．４７％。结论：ＦＬＡＩＲ和ＤＷＩ在急性脑梗塞中均有用，以ＤＷＩ最好，且能对急性脑梗塞作定量评价。
Purpose:To compare fluid attenuated inversion recovery (FLAIR) sequence and diffusion weighted imaging (DWI) sequence in evaluation of acute cerebral infarction.Methods:14 cases of acute cerebral infarction were examined with FLAIR and DWI sequences on 1.5T MR scanner.The extent, boundary and contrast of the lesions on all images were evaluated.Apparent diffusion coefficient (ADC) and relative ADC(rADC) of the lesions were calculated.Results:The extent,boundary and contrast on FLAIR and DW images were superior to conventional T 2WI.The visualization of the lesions on DW images was proved to be the best.The mean ADC and rADC of the lesions was 6.13×10 -4 mm 2/s and 56.47% respectively.Conclusion:Both FLAIR and DWI sequences are more valuable on visualization of acute cerebral infarction than conventional T 2WI sequence.DWI was the best to show the lesions,furthermore,it can assess the infarction area quantitatively.
出处
《放射学实践》
1999年第2期77-79,共3页
Radiologic Practice
