scholarly journals A model for ultrasonic guided waves in a cortical bone plate coupled with a soft-tissue layer

2019 ◽  
Author(s):  
Phuong Thuy Nguyen ◽  
Hoai Nguyen ◽  
Ductho Le ◽  
Haidang Phan
Keyword(s):  
Soft Tissue ◽  
Cortical Bone ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Bone Plate ◽  
Tissue Layer

Nonlinear Inversion of Ultrasonic Guided Waves for in Vivo Evaluation of Cortical Bone Properties

2021 ◽  
Author(s):  
Xiaojun Song ◽  
Tiandi Fan ◽  
Jundong Zeng ◽  
QinZhen Shi ◽  
Qiong Huang ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Cortical Bone ◽  
Cortical Thickness ◽  
Guided Waves ◽  
Transverse Velocity ◽  
Ultrasonic Guided Waves ◽  
Bulk Wave ◽  
True Value ◽  
The Impact

Abstract Ultrasonic guided waves (UGW), which propagate throughout the whole thickness of cortical bone, are attractive in the early diagnosis of osteoporosis. However, it is challenging due to the impact of soft tissue and the inherent difficulties related to the multiparametric inversion of cortical bone quality factors, such as cortical thickness and bulk wave velocities. Therefore, an UGW based multiple-parameter inversion algorithm is developed to predict strength-related factors in this research. In simulation, a free plate (cortical bone) and a bilayer plate (soft tissue and cortical bone) are used to validate the proposed method. The inverted cortical thickness (CTh), longitudinal velocity (V L ) and transverse velocity (V T ) are in accordance with the true value. Then four bovine cortical bone plates are used in the in vitro experiments. Compared with the reference values, the relative errors for cortical thicknesses are 3.96%, 0.83%, 2.87% and 4.25% respectively. In the in vivo measurements, ultrasonic guided waves are collected from ten volunteers’ tibia. The theoretical dispersion curves depicted by the estimated parameters (V T , V L , CTh) match well with the extracted experimental ones. In comparison to the dual-energy x-ray absorptiometry (DXA), the results show that the estimated transverse velocity and cortical thickness are highly sensitive to the osteoporosis. Therefore, these two parameters (CTh and V T ) of long bones have potential to diagnose bone status in clinical applications.

Modeling the impact of soft tissue on axial transmission measurements of ultrasonic guided waves in human radius

2008 ◽  
Vol 124 (4) ◽  
pp. 2364-2373 ◽  
Author(s):  
Petro Moilanen ◽  
Maryline Talmant ◽  
Vantte Kilappa ◽  
Patrick Nicholson ◽  
Sulin Cheng ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Transmission Measurements ◽  
The Impact ◽  
Axial Transmission

Effects of soft-tissue layer on shear wave velocity measurements in cortical bone tubes

2020 ◽  
Vol 59 (SK) ◽  
pp. SKKB05
Author(s):  
Leslie Bustamante ◽  
Masaya Saeki ◽  
Takashi Misaki ◽  
Mami Matsukawa
Keyword(s):  
Soft Tissue ◽  
Cortical Bone ◽  
Shear Wave ◽  
Wave Velocity ◽  
Shear Wave Velocity ◽  
Velocity Measurements ◽  
Tissue Layer

Model of Guided Waves in Cortical Bones Coated with a Soft-Tissue Layer

2021 ◽  
pp. 371-379
Author(s):  
Ductho Le ◽  
Ngoc Anh Trinh ◽  
Son-Tung Dang ◽  
Emmanuel L. C. V. I. M. Plan ◽  
Minh Tuan Nguyen ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Guided Waves ◽  
Tissue Layer
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