MRI扫描T1WI序列对膝关节半月板损伤的诊断价值

摘要

目的 探讨MRI扫描T1WI序列在显示膝关节半月板损伤中的价值.方法 回顾分析膝关节疼痛可疑半月板损伤患者80例,按内外侧半月板前后角分开计数,共计380例半月板,常规行T1WI序列、T2WI脂肪抑制序列扫描.将T1WI与T2WI脂肪抑制序列的影像进行对比.结果 T1WI序列共发现半月板损伤0级186例、Ⅰ级91例、Ⅱ级84例、Ⅲ级14例、Ⅳ级5例;T2WI脂肪抑制序列共发现半月板损伤0级225例、Ⅰ级61例、Ⅱ级75例、Ⅲ级14例、Ⅳ级5例.两组比较差异有统计学意义(P＜ 0.05).结论 T1WI序列在发现半月板Ⅰ级、Ⅱ级损伤上敏感性较好,对可疑半月板Ⅰ级和Ⅱ级损伤者可着重观察T1WI图像.%Objective To explore the value of MRI on T1WI in injury of meniscus of knee joints.Methods Retrospective analyses were conducted on 95 cases of patients with painful knee joints who were suspected to have meniscus injury.Counted seperately by lateral and medial meniscus as well as anterior and posterior angle,there were totally 380 menisci.T1WI sequence and fat suppressed sequence on T2WI were scanned and compared.Results The images on T1WI showed that 186 menisci were of level 0,91 of leve Ⅰ,84 of level Ⅱ,14 of level Ⅲ and 5 of level Ⅳ.The images on T2WI fat suppressed sequence indicated that 225 menisci were of level 0,61 of level Ⅰ,75 of level Ⅱ,14 of level Ⅲ and 5 of level Ⅳ.The differences between 2 groups had statistic significances (P＜0.05).Conclusion T1WI sequence is more sensitive to show the leve Ⅰ and level Ⅱ injury of meniscus.The suspicious leve Ⅰ and level Ⅱ of meniscal lesions are highly recommended to be observed in T1WI images.