快速场回波FRACTURE序列在膝关节骨质异常的初步应用研究  

Preliminary Study on the Application of Fast Field Echo(FRACTURE)Sequence in the Detection of Bone Abnormalities of Knee Joint

作　　者：张琪明 祁良[2] 顾敏岚 顾晓清 郑凯 金少华 ZHANG Qi-ming;QI Liang;GU Min-lan;GU Xiao-qing;ZHENG Kai;JIN Shao-hua(Departent of Radiology,The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University,Suzhou 215200,Jiangsu Province,China;Departent of Radiology,the First Affiliated Hospital of NanJing Medical University,Nanjing 210029,Jiangsu Province,China;Departent of Radiology,Suzhou Wujiang District Hospital of Traditional Chinese Medicine,Suzhou 215200,Jiangsu Province,China)

机构地区：[1]南京医科大学附属江苏盛泽医院放射科,江苏苏州215200 [2]南京医科大学第一附属医院放射科,江苏南京210029 [3]吴江区中医医院放射科,江苏苏州215200

出　　处：《中国CT和MRI杂志》2023年第7期157-159,共3页Chinese Journal of CT and MRI

摘　　要：目的探讨3.0T磁共振快速场回波(FRACTURE)序列显示膝关节骨质异常的可行性,并以计算机断层扫描(CT)的骨质病变作为标准,评估FRACTURE序列与常规T1序列对膝关节骨质病变的检出能力。方法选取符合纳入标准的患者35例,所有病例均行CT、MR平扫并添加FRACTURE序列,扫描时间间隔均短于一周。2名医师采用5分法从显示骨质结构的图像质量对FRACTURE序列进行评价,采用Kappa检验分析评价者间一致性;使用配对t检验比较CT图像及FFE图像测量相同层面骨皮质厚度的一致性;以CT作为参考标准,分析FRACTURE序列及常规T1序列对骨质异常的检出能力,结果采用χ^(2)检验。结果FRACTURE序列检查的图像质量评分为(4.56±0.56),对骨质病变的显示较好,满足诊断要求,两名评价者间一致性好,kappa值为0.78;两种序列显示骨皮质厚度无统计学差异(P均>0.05);CT检出骨质异常75处,FRACTURE序列共检出骨质异常73处,检出率97%,常规T1序列共检出骨质异常60处,检出率80%,FRACTURE序列图像与常规T1序列之间差异有统计学意义(P<0.05)。结论本研究提示FRACTURE序列骨质结构对比度较高,在常规MR检查中添加FRACTURE序列可增加MR检查对骨质病变的识别能力。Objective To explore the feasibility of 3.0T MR fast field echo(FRACTURE)sequence in displaying bone abnormalities of the knee joint,and to evaluate the detection ability of FRACTURE sequence and conventional T1 sequence in detecting bone lesions of the knee joint based on the bone lesions of computed tomography(CT).Methods 35 patients who met the inclusion criteria were selected.All of them underwent CT and Mr plain scans with the addition of FRACTURE sequence.The interval between scans was less than one week.Two doctors used the 5-point method to evaluate the FRACTURE sequence from the image quality of displaying the bone structure,and kappa test was used to analyze the consistency between the evaluators;Paired t-test was used to compare the consistency of CT images and FFE images in measuring the thickness of bone cortex in the same layer;Taking CT as the reference standard,the detection ability of FRACTURE sequence and conventional T1 sequence for bone abnormalities was analyzed,and the results were tested with 2.Results the image quality score of FRACTURE sequence examination was(4.56±0.56),which showed bone lesions well and met the diagnostic requirements.The consistency between the two evaluators was good,and the kappa value was 0.78;There was no significant difference in cortical thickness between the two sequences(P>0.05);There were 75 bone abnormalities detected by CT,73 bone abnormalities detected by FRACTURE sequence,with a detection rate of 97%,and 60 bone abnormalities detected by conventional T1 sequence,with a detection rate of 80%.There was a significant difference between FRACTURE sequence images and conventional T1 sequence images(P<0.05).Conclusion this study suggests that the contrast of bone structure of FRACTURE sequence is high.Adding FRACTURE sequence to conventional MR examination can increase the recognition ability of MR examination for bone lesions.

关 键 词：膝关节 体层摄影 磁共振成像 FRACTURE序列 

分 类 号：R445.2[医药卫生—影像医学与核医学]