摘要
目的探讨双能CT虚拟去钙技术不同重建算法(标准算法和骨算法)鉴别急慢性椎体压缩性骨折的价值。方法对31例胸/腰椎压缩性骨折患者的数据进行回顾性分析。以MRI图像为参考标准,由两名医师采用二分类方法对所有椎体虚拟去钙的伪彩图进行视觉评估,并测量虚拟去钙灰度图中所有椎体的相对水含量。绘制ROC曲线、计算曲线下面积(AUC),比较双能CT虚拟去钙技术不同重建算法鉴别急慢性椎体压缩性骨折的诊断效能。结果MRI图像显示共有急性压缩性骨折椎体44个和慢性压缩性骨折椎体35个。视觉评估鉴别诊断急、慢性椎体压缩性骨折时,标准算法和骨算法的AUC分别为0.932和0.943;定量测量时,标准算法和骨算法的AUC分别为0.851和0.850。结论双能CT虚拟去钙技术可以鉴别急慢性压缩性骨折,且不同的重建算法具有相似的诊断效能。
Objective To explore the value of different reconstruction kernels(STND V.S.BONE)of dual-energy CT virtual noncalcium(VNCa)technique for identifying acute and chronic vertebral compression fractures(VCFs).Methods Data of 31 patients was retrospectively evaluated.They underwent both a dual energy CT and a 3-T MR examination of the spine.MR images served as the reference standard.Two independent and blinded readers visually evaluated all vertebral bodies for the presence of bone marrow edema on color-coded overlay virtual VNCa images by using a binary classification system,and performed a quantitative analysis on VNCa images by calculating the water content of all vertebral bodies.Receiver operating characteristic curve(ROC)analysis was conducted and area under the curve(AUC)value was calculated to analyze the diagnostic efficiency of different reconstruction kernels of dual-energy CT VNCa technique for identifying acute and chronic VCFs.Results MR imaging depicted 44 edematous and 35 nonedematous VCFs.In visual analysis,the AUCSTND and AUCBONE was 0.932 and 0.943 respectively.In quantitative analysis,the AUCSTND and AUCBONE was 0.851 and 0.850 respectively.Conclusion Visual and quantitative analysis of dual-energy CT VNCa technique had excellent diagnostic performance for identifying acute and chronic compression fractures,different reconstruction kernels have similar diagnostic efficiency.
作者
颜路悠
张堃
钟泽亚
高辉
何业文
李平
沈宏荣
周淑伟
郭英
YAN Luyou;ZHANG Kun;ZHONG Zeya(Department of Radiology,First Affiliated Hospital of Hunan University of Chinese Medicine,Changsha,Hunan Province 410007,P.R.China)
出处
《临床放射学杂志》
北大核心
2021年第6期1176-1180,共5页
Journal of Clinical Radiology
基金
国家自然科学基金青年科学基金(编号:81603482)
湖南省自然科学基金(编号:2016JJ6115)
中国博士后科学基金面上项目(编号:2017M622586)
湖南省“国内一流培育学科”中西医结合开放基金项目(编号:2020ZXYJH07)
湖南中医药大学重点学科建设项目(编号:4901-020000200806)。
关键词
脊柱骨折
骨髓水肿
体层摄影术
X线计算机
虚拟去钙技术
Spinal fractures
Bone marrow edema
Tomography
X-ray computed
Virtual noncalcium technique
