中国医学装备2025，Vol.22Issue(4)：28-33,6.DOI:10.3969/j.issn.1672-8270.2025.04.006
多层螺旋CT腰椎三维后处理技术与定量CT骨密度测定的一致性研究
Consistency of MSCT 3D processing technique and QCT in measuring BMD for lumbar vertebra
摘要
Abstract
Objective:To study the consistency between post-processing bone mineral density(BMD)values of multi-slice spiral computed tomography(MSCT)scan and the BMD value of quantitative computed tomography(QCT)for lumbar vertebra,so as to explore the feasibility of utilizing MSCT scan-based post-processing BMD values for lumbar vertebra in clinical practice.Methods:The MSCT equipment and QCT equipment were respectively adopted to conduct imaging scan for the L2-L4 of lumber vertebra of QRM-ESP145 European Spine Phantom(ESP),and L2-L4 of lumbar vertebra of adult sheep,and L2-L4 of lumbar vertebra of adult volunteer.The L2-L4 of ESP lumber vertebra and L2-L4 of lumbar vertebra of adult sheep were scanned respectively MSCT and QCT for three times,so as to measure BMD values.The L2-L4 of lumbar vertebrae of volunteers were scanned respectively by the two methods for one time according to the standard of clinical examination,which were reconstructed by three times so as to obtain mean of them.The BMD values of QCT scan were set as control group,and the BMD values of MSCT scan were set as experiment group.The experiment group was further divided into experiment 1 group[two dimension(2D)regional volumetric BMD values of the lumbar vertebra]and experiment 2 group[three dimension(3D)global volumetric BMD post-processing of the lumbar vertebra]according to the reliability of experiment.Then,the consistency between the MSCT 3D post-processing BMD values of three groups and QCT-measured BMD values was compared and analyzed.Results:The MSCT 3D post-processing BMD values of L2-L4 of ESP lumbar vertebra of three groups were respectively(120.83±0.97),(199.57±0.54)and(119.19±1.04)mg/cm³,and that of L2-L4 of lumbar vertebra of adult sheep of three groups were respectively(414.89±1.72),(410.50±0.77)and(420.25±2.71)mg/cm3,and that of L2-L4 of lumbar vertebra of volunteer were respectively(141.22±0.09),(137.38±0.37)and(152.03±1.03)mg/cm3.There were not statistically significant differences in BMD values between MSCT examination and QCT examination(P＞0.05).Conclusion:MSCT 3D post-processing BMD values on lumbar vertebra has high consistency with that of QCT measurements,which post-processing technique can replace QCT to conduct BMD examination,and reduce unnecessary radiation exposure and examination costs for patients.关键词
多层螺旋CT(MSCT)/定量CT(QCT)/腰椎三维后处理技术/骨密度(BMD)/测量体模(CP)Key words
Multi-slice spiral computed tomography(MSCT)/Quantitative computed tomography(QCT)/Three dimension(3D)post-processing technique for lumbar vertebra/Bone mineral density(BMD)/Calibration phantom(CP)分类
医药卫生引用本文复制引用
李向明,张立新,王卫丰,孔亚群,许晨思,周万博,艾顺生,宋立祥,牛延涛..多层螺旋CT腰椎三维后处理技术与定量CT骨密度测定的一致性研究[J].中国医学装备,2025,22(4):28-33,6.基金项目
国家自然科学基金青年科学基金(82302182) Youth Fund of the National Natural Science Foundation of China(82302182) （82302182）
