摘要目的 探讨超声弹性成像在直肠肿瘤术前T分期诊断中的应用价值.方法 128例直肠肿瘤患者,分别行直肠腔内超声(ERUS)与弹性成像检查,记录肿瘤局部肠壁浸润深度及周边器官组织侵犯情况(T分期),与手术病理结果作对照分析.结果 ERUS与弹性成像检查在T分期总的准确性(69.53％对78.90％)比较差异无统计学意义(P＞0.05),但弹性成像诊断T2期肿瘤的准确性高于ERUS(86.72％对75.00％),弹性成像诊断T3期的准确性亦高于ERUS (89.06％对77.34％),差异均有统计学意义(P＜0.05).ERUS与弹性成像对T分期诊断过高(13.28％对9.38％)、T分期诊断过低(17.18％对11.72％)的差异无统计学意义(均P＞0.05).结论 超声弹性成像在直肠肿瘤T2、T3期中具有较高的诊断准确性,可弥补直肠腔内灰阶超声的不足,为临床治疗决策提供了依据.

abstractsObjective To investigate the clinical application value of ultrasound elastography(UE) in preoperative T staging of rectal neoplasm.Methods One hundred and twenty-eight cases of rectal neoplasm patients were selected,and underwent endorectal ultrasonography(EURS) and UE.The T staging was recorded and compared with pathology.Results There were no significant differences in T staging total accuracy between ERUS and UE (69.53％ vs 78.90％,P ＞0.05).But the diagnosis accuracy of T2 staging of UE was higher than that of ERUS (86.72 ％ vs 75.00％,P =0.017),and the diagnosis accuracy of T3 staging was also higher than that of ERUS (89.06％ vs 77.34％,P =0.012).There were no significant differences in overestimated (13.28 ％ vs 9.38 ％) and underestimated (17.18 ％ vs 11.72 ％) of T staging between ERUS and UE (P ＞0.05).Conclusions ERUS has a high diagnosis accuracy in T2 and T3 staging of rectal neoplasm,which may make up for the deficiency of endorectal ultrasonography,and provide a new treatment for clinical strategy.