方法：手术和病理证实的疑难病例13例，回顾性分析肿瘤的mri图像特征。
Methods: MR imaging manifestations of 13 difficult cases were studied, who were confirmed by surgery and pathology.
目前主要在放射影像学、病理学、心理学、皮肤性病学及各种疑难病例会诊方面应用较多。
It is mainly applied to the consultation of difficult cases in radiology, pathology, psychology and dermatology and venerology in China.
前言： 目的：探讨对于需减数治疗的正畸疑难病例选择性拔除一组磨牙，以实现保留28个牙齿的可行性。
Objective:To discuss the feasibility of reservation 28 teeth by removal of a group of molars to difficult patients who need extraction treatment.
结论LBT是SLE辅助诊断的敏感和特异的指标，而其较高的阳性预测值提示其在SLE疑难病例诊断中有重要价值。
Conclusion LBT is a sensitive and specific test for diagnosis of SLE. The high positive predictive value of LBT in SLE suggests that it is valuable in difficult cases of SLE.
加强疑难病病例的管理，是提高医疗质量的重要环节之一。
It is one of the important links in improving quality of medical care to strengthen management of difficult and compicated cases.
加强疑难病病例的管理，是提高医疗质量的重要环节之一。
It is one of the important links in improving quality of medical care to strengthen management of difficult and compicated cases.
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