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目的探讨超长回波时间(TE)重T2加权像(T2WI)对肝血管瘤和肝囊肿的快速鉴别诊断价值。方法对经磁共振平扫加动态增强扫描确诊的肝血管瘤(123个)和肝囊肿(203个)病灶行超长TE重T2WI成像,比较不同序列对肝血管瘤和肝囊肿的鉴别诊断效能。结果常规脂肪抑制T2WI序列和超长TE重T2WI序列对鉴别诊断肝血管瘤与肝囊肿的AUC分别为0.556和0.986(P<0.01)。结论超长TE重T2WI序列能快速、准确地鉴别诊断肝血管瘤与肝囊肿。
Objective To investigate the rapid differential diagnosis of hepatic hemangiomas and hepatic cysts by ultra-long-term echo time (TE) weighted T2 weighted imaging (T2WI). Methods Long-term TE-weighted T2WI imaging was performed on lesions of hepatic hemangioma (123) and hepatic cysts (203) diagnosed by MR plain scan plus dynamic contrast-enhanced scan. The differential diagnostic efficacy of different sequences on hepatic hemangiomas and hepatic cysts . Results The AUC of conventional fat-suppressed T2WI and ultra-long TE heavy T2WI were 0.556 and 0.986 (P <0.01) for differential diagnosis of hepatic hemangiomas and hepatic cysts. Conclusion Long T2WI heavy T2WI sequence can be quickly and accurately differential diagnosis of hepatic hemangiomas and hepatic cysts.