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。
Objective To study the diagnostic performance of susceptibility-weighted imaging （SWI） in meniscal tear of knee. Methods 34 patients with suspected meniscal tear were performed with routine MR sequences （including T2 WI） and SWI on a 3.0T MR scanner. Two musculoskeletal radiologists reviewed the meniseal tears in T2 WI sequences and SWI sequences respectively. Both radiologists were blinded to the operative results and original interpretations. They evaluated each meniscus separately and made the second diagnosis half a month later after the first diagnosis. Using arthroscopic as the gold standard, they calculated the mean sensitivity, specificity and accuracy of TzWI and SWI at first diagnosis and second diagnosis, arid analyzed the diagnostic consistency. Results For radiologis T1 , the mean sensitivity, specificity, accuracy for T2WI were 90% , 92.5% , and 91.5 % , respectively, whereas those for SWI were 87.8% , 95.6% , and 93% , respectively. For radiologist 2. The mean sensitivity, specificity, accuracy for TzW[ were 84.4% , 89% , and 87.5 % , respectively, whereas those for SWI were 87.8% , 92. 3% , and 90.8% , respectively. Two radiologists had its own excellent consistency by T2WI and SWI sequence in the diagnosis of meniscal tear （T2WIradiologist 1, k =0. 854; radiologist 2, k =0. 819; SWI-radiologist 1, k =0. 882; radiologist 2, k = 0. 820）. The consistency of two radiologists between T2 WI and SWI sequence in diagnosis of meniscal tear was excellent （ T2 WI, k - 0. 967 ; SWI, k = 0. 885 ）. There was no significant difference between TzWI and SWI for the diagnosis of meniscal tear（radi- ologist 1, P = 0. 99, radiologist 2, P = 0.25）. Conclusion SWI can be used for diagnosis of meniscal tears.
出处
《医学影像学杂志》
2016年第12期2288-2291,2295,共5页
Journal of Medical Imaging
关键词
半月板撕裂
磁共振成像
磁敏感成像
关节镜
Meniscaltear
Magnetic resonance imaging
Susceptibility-weighted imaging
Arthroscopy
