低场MRI与超声对诊断子宫腺肌症的比较

目的探讨低场（0．23T）MRI与超声对子宫腺肌症的诊断价值。方法由手术和病理证实的子宫腺肌症45例和对照组子宫肌瘤36例术前均行超声（经腹、经阴道途径）、MRI检查。比较各种方法的诊断敏感性、特异性、准确性、阳性预测值及阴性预测值。结果MRI柃查对子宫腺肌症的诊断敏感性为95．56％，特异性为100％，准确性97．53％，阳性预测值为100．00％，阴性预测值为97．74；经阴道超声分别为80．0％、88．89％、83．95％、90．00％、78．05％；经腹部超声分别为68．89％、83．33％、75.31％、83．78％、68．18％。结论对于子宫腺肌症的诊断，低场MRI为最有价值的检查手段，而经阴道超声又优于经腹部超声。

Comparison between MR imaging and ultrasonography in the diagnosis of uterine adenomyosis

Objective To compare the diagnostie capability between MR imaging and ultrasonography for uterine adenomyosis. Methods Forty-five patients with uterine adenomyosis and 36 patients with uterine leiomyoma （as controls） eonfirmed by surgery and pathology underwent MR imaging with low field （0.23T）,transabdominal uhrasonography （TAUS）and transvaginal ultrasonography （TVUS） before the operation. The diagnostic capability of above three modalities for uterine adenomyosis was compared each other.Results The sensitivity ,specificity, accuracy, positive predictive value （PPV）,and negative predictive value （NPV）of MR imaging for uterine adenomyosis were 95.56%,100%,97.53%,lO0%,and 97.74% respectively; while those of TVUS were 80.0%,88.89%,83.95%,90.00%,and 78.05%,respectively; those of TAUS were 68.89%,83.33%,75.3 1%,83.78%,and 68.18%,respectively.Conclusion For the diagnosis of uterine adenomyosis,MR imaging is an optimal means of three modalities,while TVUS is superior to TAUS.