Bidirectional axial transmission can improve accuracy and precision of ultrasonic velocity measurement in cortical bone: a validation on test materials

Bossy, Emmanuel; Talmant, Maryline; Defontaine, M.; Patat, F.; Laugier, Pascal

doi:10.1109/tuffc.2004.1268469

Cited by 127 publications

(86 citation statements)

References 14 publications

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“…Note that no interface condition is required for this elastoacoustic problem because both of fluid and bone domains are modeled as elastic media. An explicit time domain finite difference scheme, which is based on a staggered grid formulation for the velocity and stress components, has been implemented [9] to solve the two-dimensional problem (2). The scheme is second-order in time and fourth-order in space.…”

Section: Governing Equations and Numerical Methodsmentioning

confidence: 99%

“…In the past, most models of ATT considered cortical long bone as a medium with homogeneous properties along its longitudinal direction. Hence, homogeneous or functionally graded material properties have been used to model the cortical bone plate [2,7,12,13]. In practice, the exploitation of measured signal data naturally needs to also take into account the uncertainty of material characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Ultrasound Wave Propagation in a Stochastic Cortical Bone Plate

Naı̈li

Nguyen

et al. 2014

Advances in Intelligent Systems and Computing

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Abstract. Ultrasonic guided-wave technologies are powerful nondestructive testing techniques to characterize bone material. This work aims to evaluate the effect due to spatial heterogeneity of bone material properties on its ultrasound response using axial transmission technique. A probabilistic model is introduced to describe the mechanical behavior of bone material. The numerical results focused on studying of FAS (First Arriving Velocity) showing that this quantity strongly depends on the dispersion induced by statistical fluctuations of stochastic elasticity field.

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Section: Governing Equations and Numerical Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrasound Wave Propagation in a Stochastic Cortical Bone Plate

Naı̈li

Nguyen

et al. 2014

Advances in Intelligent Systems and Computing

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“…This was quantified for the first time for FAS measurement. 13 Consider a waveguide immersed in an ambient fluid ( Fig. 1).…”

Section: Principle Of the Bidirectional Approachmentioning

confidence: 99%

“…With only one direction measured, a proper compensation for the phase shifts in the signals would require an a priori knowledge of the soft tissue velocity and the angle between the probe and the bone; this is difficult in a clinical sequence of measurements using current axial transmission techniques. Consequently the so-called bidirectional axial transmission approach, an alternative method that was first introduced in the measurement of FAS velocity, 13 is generalized here to GW. In its original context, the method consisted of evaluating the time of flight of the FAS in two opposite directions and computing the harmonic mean of the two sets of data to cancel the effect of soft tissue without the need to know the soft tissue thickness characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Bossy et al reported that, while uncompensated FAS velocity values could be biased by more than 10% for an inclination of a few degrees between the test specimen surface and the probe, the bidirectional compensation procedure reduced the bias on velocity measurement to a relative precision error lower than 0.2% to 0.3%. 13 The bidirectional correction of the FAS velocity has been applied in clinical studies. 14,15 The impact of a variation of the thickness of soft tissue along the length of the bone on the GW wavenumbers has not been investigated so far.…”

Section: Introductionmentioning

confidence: 99%

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Accurate measurement of guided modes in a plate using a bidirectional approach

Moreau

Minonzio

Foiret

et al. 2013

The Journal of the Acoustical Society of America

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International audienceMeasuring guided wave propagation in long bones is of interest to the medical community. When an inclination exists between the probe and the tested specimen surface, a bias is introduced on the guided mode wavenumbers. The aim of this study was to generalize the bidirectional axial transmission technique initially developed for the first arriving signal. Validation tests were performed on academic materials such a bone-mimicking plate covered with either a silicon or fat-mimicking layer. For any inclination, the wavenumbers measured with the probe parallel to the waveguide surface can be obtained by averaging the wavenumbers measured in two opposite directions

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Ultrasound-Based Estimates of Cortical Bone Thickness and Porosity Are Associated With Nontraumatic Fractures in Postmenopausal Women: A Pilot Study

Minonzio

Bochud

Vallet

et al. 2019

Journal of Bone and Mineral Research

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Recent ultrasound (US) axial transmission techniques exploit the multimode waveguide response of long bones to yield estimates of cortical bone structure characteristics. This pilot cross‐sectional study aimed to evaluate the performance at the one‐third distal radius of a bidirectional axial transmission technique (BDAT) to discriminate between fractured and nonfractured postmenopausal women. Cortical thickness (Ct.Th) and porosity (Ct.Po) estimates were obtained for 201 postmenopausal women: 109 were nonfractured (62.6 ± 7.8 years), 92 with one or more nontraumatic fractures (68.8 ± 9.2 years), 17 with hip fractures (66.1 ± 10.3 years), 32 with vertebral fractures (72.4 ± 7.9 years), and 17 with wrist fractures (67.8 ± 9.6 years). The areal bone mineral density (aBMD) was obtained using DXA at the femur and spine. Femoral aBMD correlated weakly, but significantly with Ct.Th (R = 0.23, p < 0.001) and Ct.Po (R = ‐0.15, p < 0.05). Femoral aBMD and both US parameters were significantly different between the subgroup of all nontraumatic fractures combined and the control group (p < 0.05). The main findings were that (1) Ct.Po was discriminant for all nontraumatic fractures combined (OR = 1.39; area under the receiver operating characteristic curve [AUC] equal to 0.71), for vertebral (OR = 1.96; AUC = 0.84) and wrist fractures (OR = 1.80; AUC = 0.71), whereas Ct.Th was discriminant for hip fractures only (OR = 2.01; AUC = 0.72); there was a significant association (2) between increased Ct.Po and vertebral and wrist fractures when these fractures were not associated with any measured aBMD variables; (3) between increased Ct.Po and all nontraumatic fractures combined independently of aBMD neck; and (4) between decreased Ct.Th and hip fractures independently of aBMD femur. BDAT variables showed comparable performance to that of aBMD neck with all types of fractures (OR = 1.48; AUC = 0.72) and that of aBMD femur with hip fractures (OR = 2.21; AUC = 0.70). If these results are confirmed in prospective studies, cortical BDAT measurements may be considered useful for assessing fracture risk in postmenopausal women. © 2019 American Society for Bone and Mineral Research.

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Bidirectional axial transmission can improve accuracy and precision of ultrasonic velocity measurement in cortical bone: a validation on test materials

Cited by 127 publications

References 14 publications

Ultrasound Wave Propagation in a Stochastic Cortical Bone Plate

Ultrasound Wave Propagation in a Stochastic Cortical Bone Plate

Accurate measurement of guided modes in a plate using a bidirectional approach

Ultrasound-Based Estimates of Cortical Bone Thickness and Porosity Are Associated With Nontraumatic Fractures in Postmenopausal Women: A Pilot Study

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