超声背散射信号与松质骨微结构变化的关系
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- 英文论文题名：The relationship between ultrasonic backscatter and microstructure in cancellous bone
- 论文作者：丑幸幸 ; 刘成成 ; 他得安
- 英文论文作者：CHOU Xing-xing ; LIU Cheng-cheng ; TA De-an ; Department of Electronic Engineering ; Fudan University
- 年：2016
- 作者机构：复旦大学电子工程系;
- 论文关键词：超声背散射 ; 松质骨微结构 ; 频谱质心偏移量
- 英文论文关键词：ultrasonic backscatter ; trabecular bone microstructure ; spectral centroid shift
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：R445.1;R580
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：4
- 文件大小：564k
- 原文格式：D
- 会议级别：全国
摘要
为了更好地理解超声背散射信号频谱质心偏移量(SCS)与松质骨微结构之间的关系,本文用三种不同的图像腐蚀过程实现随松质骨孔隙度递增松质骨微结构的各种变化。采用时域有限差分(FDTD)模型,研究了超声分别从垂直和平行于骨小梁排列方向入射时,对于不同的松质骨微结构变化过程,SCS与松质骨孔隙度变化关系。仿真结果表明SCS均与松质骨孔隙度负相关;同时SCS受松质骨微结构变化过程中平行和垂直于骨小梁主要排列方向变化比重影响,相同孔隙度,垂直入射时,垂直方向比重大的SCS较小,平行入射时结果相反。
In order to well know the relationship of ultrasonic backscatter spectral centroid shift(SCS) and microstructural variation in cancellous bone, we presented three erosion procedures to realize various changes in cancellous bone microstructure with increasing porosity. Finite difference time domain(FDTD) method has been used to simulate and investigate the relationship between SCS and the porosity of cancellous bone with different changing process in cancellous bone microstructure when the ultrasound incidence directions are parallel and perpendicular to the major trabecular orientation. The negative correlation between SCS and the porosity of cancellous bone is verified by the simulation result. More importantly, the simulation results show that SCS was confined to the weight of the cancellous bone microstructural variations parallel and perpendicular to the major trabecular orientation, when the incidence direction is perpendicular to the major trabecular orientation, SCS is smaller when the weight of erosion in the direction that perpendicular to the major trabecular orientation is larger than parallel to the same porosity, and opposite when the incidence direction is parallel.
In order to well know the relationship of ultrasonic backscatter spectral centroid shift(SCS) and microstructural variation in cancellous bone, we presented three erosion procedures to realize various changes in cancellous bone microstructure with increasing porosity. Finite difference time domain(FDTD) method has been used to simulate and investigate the relationship between SCS and the porosity of cancellous bone with different changing process in cancellous bone microstructure when the ultrasound incidence directions are parallel and perpendicular to the major trabecular orientation. The negative correlation between SCS and the porosity of cancellous bone is verified by the simulation result. More importantly, the simulation results show that SCS was confined to the weight of the cancellous bone microstructural variations parallel and perpendicular to the major trabecular orientation, when the incidence direction is perpendicular to the major trabecular orientation, SCS is smaller when the weight of erosion in the direction that perpendicular to the major trabecular orientation is larger than parallel to the same porosity, and opposite when the incidence direction is parallel.
引文
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[2]他得安,王威琪.超声背散射法评价松质骨状况的研究[J].应用声学,2013,32(3):199-204.Ta,D,Wang W.Assessment of cancellous bone based on ultrasonic backscatter method[J].Applied Acoustics,2013,32(3):199-204.
[3]Zhang R,Ta D,Liu C,et al.Feasibility of bone assessment with ultrasonic backscatter signals in neonates[J].Ultrasound in medicine&biology,2013,39(10):1751-1759.
[4]Hoffmeister B K,Mcpherson J A,Smathers M R,et al.Ultrasonic backscatter from cancellous bone:the apparent backscatter transfer function[J].IEEE transactions on ultrasonics,ferroelectrics,and frequency control,2015,62(12):2115-2125.
[5]Ta D,Tang T,Liu C,et al.Ultrasound backscattering from cancellous bone in vivo[J].The Journal of the Acoustical Society of America,2015,137(4):2287-2287.
[6]刘成成,他得安,王威琪.骨小梁材料特性对超声背散射信号的影响[J].声学学报,2013,38(3):382-388.Liu C,Ta D,Wang W.Effect of trabecular bone material properties on ultrasonic backscattering signals[J].ACTA Acustica,2013,38(3):382-388.
[7]Hosokawa A.Effect of porosity distribution in the propagation direction on ultrasound waves through cancellous bone[J].IEEE transactions on ultrasonics,ferroelectrics,and frequency control,2010,57(6):1320-1328.
[8]Hosokawa A.Numerical analysis of variability in ultrasound propagation properties induced by trabecular microstructure in cancellous bone[J].IEEE transactions on ultrasonics,ferroelectrics,and frequency control,2009,56(4):738-747.
[9]Hosokawa A.Simulation of ultrasound propagation through bovine cancellous bone using elastic and Biot’s finite-difference time-domain methods[J].The Journal of the Acoustical Society of America,2005,118(3):1782-1789.
[10]Jiang Y-Q,Liu C-C,Li R-Y,et al.Analysis of apparent integrated backscatter coefficient and backscattered spectral centroid shift in calcaneus in vivo for the ultrasonic evaluation of osteoporosis[J].Ultrasound in medicine&biology,2014,40(6):1307-1317.
[2]他得安,王威琪.超声背散射法评价松质骨状况的研究[J].应用声学,2013,32(3):199-204.Ta,D,Wang W.Assessment of cancellous bone based on ultrasonic backscatter method[J].Applied Acoustics,2013,32(3):199-204.
[3]Zhang R,Ta D,Liu C,et al.Feasibility of bone assessment with ultrasonic backscatter signals in neonates[J].Ultrasound in medicine&biology,2013,39(10):1751-1759.
[4]Hoffmeister B K,Mcpherson J A,Smathers M R,et al.Ultrasonic backscatter from cancellous bone:the apparent backscatter transfer function[J].IEEE transactions on ultrasonics,ferroelectrics,and frequency control,2015,62(12):2115-2125.
[5]Ta D,Tang T,Liu C,et al.Ultrasound backscattering from cancellous bone in vivo[J].The Journal of the Acoustical Society of America,2015,137(4):2287-2287.
[6]刘成成,他得安,王威琪.骨小梁材料特性对超声背散射信号的影响[J].声学学报,2013,38(3):382-388.Liu C,Ta D,Wang W.Effect of trabecular bone material properties on ultrasonic backscattering signals[J].ACTA Acustica,2013,38(3):382-388.
[7]Hosokawa A.Effect of porosity distribution in the propagation direction on ultrasound waves through cancellous bone[J].IEEE transactions on ultrasonics,ferroelectrics,and frequency control,2010,57(6):1320-1328.
[8]Hosokawa A.Numerical analysis of variability in ultrasound propagation properties induced by trabecular microstructure in cancellous bone[J].IEEE transactions on ultrasonics,ferroelectrics,and frequency control,2009,56(4):738-747.
[9]Hosokawa A.Simulation of ultrasound propagation through bovine cancellous bone using elastic and Biot’s finite-difference time-domain methods[J].The Journal of the Acoustical Society of America,2005,118(3):1782-1789.
[10]Jiang Y-Q,Liu C-C,Li R-Y,et al.Analysis of apparent integrated backscatter coefficient and backscattered spectral centroid shift in calcaneus in vivo for the ultrasonic evaluation of osteoporosis[J].Ultrasound in medicine&biology,2014,40(6):1307-1317.