磁共振扩散加权成像对肝转移瘤TACE术后的应用评价

Value of MR-DWI in Evaluating Embolization Effect of TACE for Hepatic Metastases

目的探讨应用磁共振(MR)扩散加权成像(DWI)对经导管肝动脉栓塞化疗(TACE)术后肝转移病灶栓塞效果进行评价的应用价值。方法17例肝转移瘤患者TACE术后次日行DWI检查,并与DSA结果对照分析。结果TACE术后DSA显示42个病灶,33个病灶碘油沉积较好,9个病灶碘油沉积不完全。DWI显示47个病灶,33个病灶碘油沉积完全,9个病灶碘油沉积不完全,5个病灶未见碘油沉积。碘油沉积区和肿瘤坏死区DWI呈低信号,肿瘤残留区DWI呈高信号。结论MR-DWI在评价TACE栓塞效果上完全可行。

Objective To discuss the applied value of diffusion weighted imaging（DWI） in evaluating emboliza-tion effect of transcatheter hepatic arterial chemoembolization（TACE） for Hepatic Metastases. Methods DWI was performed in 17 Hepatic Metastases patients at the next day after TACE. Embolization effect was analyzed andcompared with DSA results. Results 17 lesions were revealed in DSA and with complete iodinated oil accumulation,9with incomplete accumulation. 47 lesions were revealed in DWI and 33 with complete iodin - oil accumulation,9 with in-complete accumulation,5 without iodinated oil accumulation.The area of iodinated oil accumulation and necrosis appeared aslow signal on DWI,and residual tumor tissues appeared as high signal. Conclusion DWI may detect Hepatic Metastases lesions sensitivelyand can be used to evaluate the embolization effect of TACE.