2018
DOI: 10.1007/s10237-018-1025-8
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Sensitivity analysis of ultrasonic guided waves propagating in trilayered bone models: a numerical study

Abstract: The fundamental ultrasonic guided modes are consistently observed in long bones ex vivo and in vivo. However, the responses of ultrasonic guided waves to the changes of cortical thickness, cortical elastic parameters, and thickness of the overlying soft tissues are not comprehensively understood. This paper systematically presents a sensitivity analysis of leaky Lamb modes to the geometry and material characteristics of layered bone model by means of semi-analytical finite element modeling. The stratified bone… Show more

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Cited by 21 publications
(3 citation statements)
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“… v p was 3913 m/s determined by ray tracing while v s = 1900 m/s and ρ = 2.4 g/cm 3 were taken from literature. 14 A total of 64 ultrasound records was acquired with 38 mm closest offset, 1 mm spacing interval, 100 μ s time length, and a time interval of 0.1 μ s.…”
Section: Methodsmentioning
confidence: 99%
“… v p was 3913 m/s determined by ray tracing while v s = 1900 m/s and ρ = 2.4 g/cm 3 were taken from literature. 14 A total of 64 ultrasound records was acquired with 38 mm closest offset, 1 mm spacing interval, 100 μ s time length, and a time interval of 0.1 μ s.…”
Section: Methodsmentioning
confidence: 99%
“…The A 0 mode is less affected by soft tissue than other modes, but is sensitive to cortical thickness. 23) The A 0 was also considered a sensitive indicator of osteoporosis, 10) making A 0 a mode of choice to use for extracting bone properties. Therefore exciting the bone plate at low frequency for A 0 is desirable.…”
Section: Effect Of the Emitted Frequencymentioning
confidence: 99%
“…The method allowed the detection of enhanced and more accurate wavenumbers in the context of the formulation of inverse problems. Recently, Tran et al (2018) (Tran et al, 2018) performed a numerical study to evaluate the effect of cortical thickness, stiffness coefficient, and thickness of the overlying soft tissues on the responses of fundamental ultrasonic guided waves in the frequency domain, using a homogeneous transversely isotropic tri-layered plate model. However, despite the improvements achieved so far concerning the modeling of cortical bone, a more detailed numerical study remains needed to explain the influence of the cross-sectional curvature and distribution of properties in the radial direction on the propagation of the guided waves at low-frequency.…”
Section: Introductionmentioning
confidence: 99%