薄层小视野高分辨MRI结合DCE-MRI对卵巢肿瘤的诊断价值

目的：探讨薄层小视野高分辨 MRI结合DCE-MRI对卵巢肿瘤的临床诊断价值。方法：51例经超声检出的卵巢肿块患者，均行盆腔MRI平扫、病变区薄层小视野高分辨MRI和DCE-MRI。分析卵巢肿瘤的影像学表现，并与手术病理结果进行对照，比较三种检查方法对卵巢肿瘤的诊断准确性。结果：51例患者共检出57个病灶。常规 MRI、薄层高分辨 MRI对卵巢肿块的定性诊断准确率分别为85．96％（49／57）和96．49％（55／57），差异有统计学意义（P＜0．05）。常规MRI和薄层高分辨 MRI分别结合DCE-MRI检查的诊断符合率为92．98％（53／57）和100％（57／57），差异有统计学意义（P＜0．05）。常规结合薄层高分辨MRI与常规结合DCE-MRI检查对卵巢肿块的定性诊断准确率的差异无统计学意义（P＞0．05）。结论：薄层小视野高分辨 MRI 对卵巢肿瘤的诊断具有重要临床价值，薄层小视野高分辨 MRI 结合 DCE-MRI可以明显提高卵巢肿瘤的定性诊断准确性，但薄层高分辨 MRI尚不能取代DCE-MRI。

Diagnostic value of high resolution MRI using thin-section and small field of view technique combined with DCE-MRI in ovarian tumor

Objective:To explore the diagnostic value of high resolution MRI (HR-MRI)using thin-section and small field of view technique combined with DCE-MRI in ovarian tumor.Methods:5 1 patients with ovarian mass detected by ultra-sound underwent routine pelvic MRI scan,high resolution MRI using thin-section and small field of view technique in the re-gion of lesions and DCE-MRI examination.The imaging characteristics of ovarian tumors were analyzed and correlated with postoperative pathology,and the diagnostic accuracy of the three methods of scanning were compared.Results:In the 51 pa-tients,57 ovarian tumors were found,the accuracy of characteristic diagnosis of routine MRI was 87.71% (49/57),and that of HR-MRI was 96.49% (55/57),there were statistical difference between the two methods (P<0.05).The diagnostic ac-curacy of routine MRI combined with DCE-MRI was 92.98% (53/57),and the diagnostic accuracy of HR-MRI combined with DCE-MRI was 100% (57/57),the difference was statistically significant (P<0.05).There was no statistical differ-ence between the diagnostic accuracy of routine MRI combined with HR-MRI and routine MRI combined with DCE-MRI (P>0.05).Conclusion:High resolution MRI (HR-MRI)using thin-section and small field of view technique is of great val-ue in diagnosing ovarian tumor,and combined with DCE-MRI it can significantly improve the diagnostic accuracy of ovarian cancer,but HR-MRI still can not displace DCE-MRI.