磁共振SWI序列在膝关节半月板撕裂上的应用研究

发布时间：2018-12-05 19:02

【摘要】：目的研究膝关节磁敏感加权成像(SWI)对膝关节半月板撕裂的诊断效能。方法 34例临床怀疑膝关节半月板损伤的患者,术前行3T磁共振常规序列包含T_2WI,增加SWI序列扫描。两名骨关节的放射科医师以T_2WI序列和SWI序列分别对半月板进行分析诊断,第一次诊断后的半个月再次分别独立对半月板进行分析诊断。以膝关节镜为金标准,分别计算T_2WI和SWI两次诊断半月板撕裂的平均敏感性、特异性和准确性,分析其一致性。结果 T_2WI和SWI诊断膝关节半月板撕裂的平均敏感性、特异性和准确性如下:T_2WI—医师1,90%,92.3%和91.5%;医师2,84.4%,89%和87.5%;SWI—医师1,87.8%,95.6%和93%;医师2,87.8%,92.3%和90.8%。两位医师T_2WI和SWI两次诊断半月板撕裂具有自身极好的一致性(T_2WI医师1,k=0.854;医师2,k=0.819;SWI医师1,k=0.882;医师2,k=0.820)。两位医师运用T_2WI和SWI诊断半月板撕裂具有极好的一致性(T_2WI,k=0.967;SWI,k=0.885)。T_2WI和SWI诊断半月板撕裂的诊断效果无显著性差异(医师1,P=0.99,医师2,P=0.25)。结论磁共振SWI序列在膝关节半月板撕裂的临床诊断具有一定的意义。
[Abstract]:Objective to study the diagnostic efficacy of magnetic sensitivity weighted imaging (SWI) for meniscus tear of knee joint. Methods 34 patients with meniscus injury suspected of knee joint were examined with 3T MRI routine sequence including T _ 2WI and SWI sequence before operation. The radiologists of two osteoarticular radiologists analyzed and diagnosed meniscus by T_2WI sequence and SWI sequence respectively. The meniscus was analyzed and diagnosed separately half a month after the first diagnosis. Using knee arthroscopy as gold standard, the average sensitivity, specificity and accuracy of T_2WI and SWI in the diagnosis of meniscus tear were calculated, and the consistency was analyzed. Results the average sensitivity, specificity and accuracy of T_2WI and SWI in the diagnosis of meniscus tear of knee joint were as follows: T2WI- doctor 190% and 91.5%; Dr. SWI- had 95.6% and 93.6% of the total, and 87.8% and 90.8% of the doctors had 87.8% and 90.8%, 92.3% and 90.8%, respectively. The two doctors, T_2WI and SWI, had excellent consistency in their own diagnosis of meniscus tear (Dr. T_2WI: 1 / 0. 854; Doctor\ = 2 / 19 = 1 / kg = 0. 882; Doctor\ = 2 / 1 = 0. 820). The diagnosis of meniscus tear by T_2WI and SWI was very consistent between the two physicians (T _ 2WI _ I _ KT _ (0.967); " SWI,k=0.885). There was no significant difference between T_2WI and SWI in the diagnosis of meniscus tear (doctor 1, P 0. 99, doctor 2, P 0. 25). Conclusion MRI SWI sequence has a certain significance in the diagnosis of meniscus tear of knee joint.
【作者单位】：中国人民解放军第三军医大学第一附属医院放射科;
【分类号】：R445.2;R684

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