中文摘要：

目的：研究肝肿瘤微波治疗后早期螺旋CT的表现并分析其临床意义。方法：68例肝癌患者89个病灶于治疗后9～18d、30d行螺旋CT检查。结果：治疗后9～18 d36个病灶增强CT于周边可见环形强化带，治疗后2个月全部消失；治疗后1个月86个病灶增强CT表现为动脉期和门脉期病灶无强化，3个病灶增强CT表现动脉期周边结节样强化或病灶边缘局部不规则强化。结论：肝癌微波消融治疗效果评价以增强CT为主，必要时结合患者血清肿瘤标志物及其它影像学检查综合判断或进行超声引导下穿刺活检。

英文摘要：

Objective： To observe early appearance of Spiral CT for hepatic tumor treated with microwave ablation. Methods： 68 patients with 89 tumors were performed spiral CT 9-18 d and 30 d after microwave ablation respectively.Results： Rim enhancement surrounding the ablated area could be seen in 36 tumors 9-18 d after treatment, which disappeared 2 monthes after treatment. No enhancement in the arterial or portal venous phase could be found in 86 ablated area, while nodular enhancement or irregular enhanced thickness at the margin of the ablated tumor in the arterial phase in 3 tumors.Conclusion： For assessing the therapeutic effects, Spiral CT should be the modality of choice. US-guided biopsy, and tumor marker level should be used only in cases in which residual tumor is highly suspected while CT results are negative.