目的 探讨子宫肌瘤的低场MRI影 像学特征及诊断价值。方法 回顾性分析 本院2014年12月至2016年1月接受诊治并 经手术病理确认的76例子宫肌瘤患者的临 床资料和磁共振影像资料，并对患者病灶 的类型、及强化程度等病理特征进行归类 分析。结果 76例患者中肌壁间肌瘤患者 占总数39.5%，浆膜下型占总数39.5%， 黏膜下肌瘤型占总数21.1%。MRI扫描显 示：T1、T2加权成像信号分别以等、低为 主，信号欠均匀，边界模糊，大小约为 5.7×4.5×7.4cm。增强扫描影像显示： 子宫前壁的强化程度不均匀，与周围分界 不清；延迟期病变强化程度低于周围正常 肌壁。病理确认结果显示：MRI扫描对子 宫肌瘤患者的总检出率在90%以上。结论 在子宫肌瘤的诊断方面，MRI增强扫描具 有较高的精度，可以作进一步推广应用。

Objective To make a thorough inquiry about the characteristics and diagnostic value of low-field MRI imaging in the diagnosis of uterine myoma. Methods Retrospective analysis of MRI data of 76 patients in our hospital with uterine fibroids identified by surgery from December 2014 to January 2016. And the distribution, enhancement degree and type of the malignant transformation of the patients were analyzed and classified. Results In 76 cases, the patients with muscle wall fibroids patients accounted for 39.5% of the total, the type of film account for 39.5% and the number of submucosal myoma accounted for 21.1% of the total. The image of MRI scanning display that the signals of T1 weighted is isointense. And then the signals of T2 weighted is low. The signal is less uniform and the boundary is fuzzy. And the size is 5.7×4.5×7.4cm. In enhanced scan, the lesions in the anterior wall of the uterus increased obviously, and the boundary was not clear, and the degree of enhancement of the lesion was less than that of the surrounding normal muscle wall. The results confirmed by pathology shows that the total detetion rate of the patients with uterine myoma is 90% or more. Conclusion In the judging the patients with uterine myoma, MRI scanning and enhanced scan can give accurate location, thus it can be used in the field of uterine myoma detection for further promotion and application.