本文采用双盲法，对７１例（１３８个病灶）经手术和病理检查的女性盆腔包块的ＭＲ和Ｂ超结果进行分析，探讨ＭＲ对女性盆腔包块的诊断价值。并对两者的敏感性、特异性和准确性，并进行比较。结果：盆腔包块定位诊断的敏感性、特异性和准确性，ＭＲ和Ｂ超分别为８６．９６／７３．１９、９６．９４／９３．８８和９６．１０／８１．７８％，两者虽无显著性差异，但１３个直径０．５～１．５ｃｍ的子宫肌瘤，ＭＲ检出１２个而Ｂ超①５１０１２０ In this paper, we analyzed the MR and B-ultrasound results of 71 cases (138 lesions) of pelvic masses by operation and pathology, and explored the diagnostic value of MR in pelvic mass of women. And the sensitivity, specificity and accuracy of the two, and compared. Results: The sensitivity, specificity and accuracy of pelvic mass localization were 86.96 / 73.19, 96.94 / 93.88 and 96.10 / 81.78% for MR and B ultrasound, respectively Although there was no significant difference, but 13 uterine fibroids 0.5 ~ 1.5cm in diameter, MR detected 12 and B ultra ① ①510120