MRI和扩散加权成像对胃癌T分期的临床判断价值

Clinical Diagnostic Value of MRI and Diffusion Weighted Imaging on the T Staging of Gastric Carcinoma

目的探讨扩散加权成像(DWI)对胃癌T分期的检测准确率。方法对59例经手术病理证实的胃癌患者进行常规MRI及DWI检查,以病理结果为金标准,比较常规MRI和DWI对胃癌T分期的检测准确率。结果胃癌病变T2WI呈等或稍高信号,DWI呈明显高信号。常规MRI、DWI最终检测到所有病灶。DWI总体分期准确率(83.0%)显著高于常规MRI(69.5%)(P=0.003),DWI对T3期肿瘤诊断准确率(60.0%)亦显著高于常规MRI(88.0%)(P=0.02)。结论 DWI联合常规MRI检查,不仅有利于胃癌的检测,而且能提高胃癌T分期准确率,具有一定的临床实用价值。

Objective To study of detection accuracy of MRI and diffusion-weighted imaging ( DWI ) for T staging of gastric cancer.Methods 59 cases of patients with pathologically confirmed gastric cancer received conventional MRI and DWI examination,and the pathological findings as the gold standard ,detective accuracy of T staging of gastric cancer by conventional MRI and DWI were compared .Results Gastric lesions in the T 2 WI showed equal or slightly higher signal ,DWI showed a high signal.Conventional MRI and DWI eventually detected all lesions .DWI overall staging accuracy rate (83.0%) was significantly higher than that of conventional MRI (69.5%) (P=0.003),diagnostic accuracy of T3 tumors by DWI (60.0%) was signifi-cantly higher than that of conventional MRI (88.0%) (P=0.02).Conclusion DWI combined with conventional MRI detec-tion of gastric cancer is beneficial for gastric cancer detection ,and improves the accuracy of T staging ,it has certain clinical val-ue.