目的回顾性分析子宫肌瘤在高强度聚焦超声消融后DCE-MRI的特征。材料与方法对33例子宫肌瘤患者进行高强度聚焦超声消融术，所有患者在术前1周内及术后1周行DCE-MRI检查，然后对同一肌瘤边缘的强化模式进行分析，判断是否完全消融。结果高强度聚焦超声消融33例子宫肌瘤，其中25例术后DCE-MRI表现为中央低信号无强化的消融区，并有窄边强化，经术后6个月复查，未见复发肿瘤组织，证实完全消融；8例消融区边缘有结节或有不规则增厚边缘强化，5例经病理学确认有残留存活肿瘤组织，3例6个月后复查表现为增大。结论子宫肌瘤被完全消融的DCE-MRI征象为中央无强化低信号区，伴狭窄强化边缘，而边缘有结节强化或有不规则增厚边缘强化，则考虑肿瘤只被部分消融。%Objective: To retrospectively evaluate dynamic contrast-enhanced MRI (DCE-MRI) features of hysteromyoma after high-intensity focused ultrasound (HIFU) ablation. Materials and Methods:Thirty-there patients with hysteromyoma underwent HIFU ablation. In all patients, DCE-MRI was performed prior to and 1st weeks after HIFU. Then the patterns of the peripheral enhancement of hysteromyoma were evaluated, judged it was complete ablation or not. Results: In twenty-five of thirty-there patients, thin rim enhancement around the ablation zone was seen on the DCE-MRI after first ablation, which showed no relapse lesion after 6 months, that complete ablation could be conifrmed. In the remaining eight patients, nodular or irregular thick enhancement was shown on the DCE-MRI, viable tumour was conifrmed by biopsy in ifve patients, the volume of the remains increased 6 months after HIFU ablation. Conclusions: The DCE-MRI characteristics of successfully ablated hysteromyomas included central dark signal intensities with thin rim enhancement, nodular or irregular thick enhancements should raise concern of partial ablation.
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