Plantar Soft Tissue Characterization Using Reverberant Shear Wave Elastography: A Proof-of-Concept Study

Romero, Stefano E.; Naemi, Roozbeh; Flores, Gilmer; Allan, David B.; Ormachea, Juvenal; Gutierrez, Evelyn; Casado, Fanny L.; Castañeda, Benjamín

doi:10.1016/j.ultrasmedbio.2021.09.011

Cited by 7 publications

(8 citation statements)

References 32 publications

(29 reference statements)

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“…Figure 1 shows the steps followed in the study. In the first step, (a) shows the SWS profile reported using the RSWE technique in five patients (Romero et al 2022). Then, in figure 1(b), phantoms were manufactured by changing the concentration where the one with SWS in the range of plantar soft tissue was chosen.…”

Section: Methodsmentioning

confidence: 99%

“…The mechanical properties of different tissues have been characterised using various techniques (Ormachea and Parker 2020). Recently, tissues adjacent to the first metatarsal head, third metatarsal head (3-MTH), and calcaneus have been characterised using reverberant shear wave elastography (RSWE) technique (Romero et al 2022). This technique differs from other ultrasound shear wave elatography methods because it takes advantage of the bounces generated by inhomogeneities, bones, and organ boundaries (Parker et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Characterisation of the soft tissue viscous and elastic properties using ultrasound elastography and rheological models: validation and applications in plantar soft tissue assessment

et al. 2023

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Objective: The mechanical behaviour of soft tissue is influenced by its elastic and viscous characteristics. Therefore, the aim of this study was to develop a protocol to characterise the viscoelastic properties of soft tissues based on ultrasound elastography data. Approach: Plantar soft tissue was chosen as the tissue of interest, and gelatine-phantoms replicating its mechanical properties were manufactured for validation of the protocol. Both plantar soft tissue and the phantom were scanned using Reverberant shear wave elastography at 400-600 Hz. Shear wave speed (SWS) was estimated using the US particle velocity data. The viscoelastic parameters were extracted by fitting the shear wave dispersion data to the Young’s modulus as a function of frequency derived from the constitutive equations of the eight rheological models (four classic and their fractional-derivative versions). Furthermore, stress-time functions derived from the eight rheological models were fitted to the phantom stress-relaxation data. Main results: The viscoelastic parameters estimated using elastography data based on the fractional-derivative (FD) models were closer to those quantified using the mechanical test. In addition, the FD-Maxwell and FD-Kelvin-Voigt models can more effectively replicate the viscoelastic behaviour of the plantar soft tissue with minimum number of model parameters (R^2 = 0.72 for both models) . Hence the FD-KV and FD-Maxwell models can more effectively quantify the viscoelastic characteristics of the soft tissue compared to other models. Significance: In this study, a method for mechanical characterisation of the viscoelastic properties of soft tissue in ultrasound elastography was developed and validated. An investigation into the most valid rheological model and its applications in plantar soft tissue assessment were also presented. This approach for the characterisation of viscous and elastic mechanical properties of soft tissue has implications in assessing the soft tissue function where those can be used as markers for diagnosis or prognosis of tissue status.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterisation of the soft tissue viscous and elastic properties using ultrasound elastography and rheological models: validation and applications in plantar soft tissue assessment

et al. 2023

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“…1. For this study, the frequency-dependent SWS was used to optimize the parameters associated with KVFD model through (6).…”

Section: Kvfd Modelsmentioning

confidence: 99%

“…Particularly, Ultrasound (US) is an imaging modality of interest because of its low-cost in contrast with MRI or OCT. After 30 years of the first images of local elasticity properties on soft tissues, multiple approaches have been developed. Among the US elastography techniques, Reverberant Shear Wave elastography (RSWE) have gained attention for its potential for clinical applications in multiple tissues such as breast [1]- [3], liver [1]- [3], eye [4], [5], and plantar tissue [6], [7]. This technique produces quantitative results and uses external vibration forces, thus it has a deeper penetration than other techniques such as Acoustic Radiation Force Impulse (ARFI) or Transient Elastography.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical validation of viscoelastic parameters for different interface pressures using the Kelvin-Voigt fractional derivative model

Tecse

Romero

et al. 2022

2022 44th Annual International Conference of the IEEE Engineering in Medicine &Amp; Biology Society (EMBC)

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The knowledge of the biomechanical properties of tissues is useful for different applications such as disease diagnosis and treatment monitoring. Reverberant Shear Wave Elastography is an approach that has reduced the restrictions on wave generation to characterize the shear wave velocity over a range of frequencies. This approach is based on the generation of a reverberant field that is generated by the reflections of waves from inhomogeneities and tissue boundaries that exist in the tissue. The Kelvin-Voigt Fractional Derivative model is commonly used to characterize elasticity and viscosity of soft tissue when using shear wave ultrasound elatography. These viscoelastic characteristics can be then validated using mechanical test such as stress relaxation. During RSWE acquisition, the effect of interface pressure, induced by pushing the probe on the skin through the gelpad, on the viscous and elastic characteristics of tissue can be investigated. However the effect of interface pressure on the validity viscous and elastic characteristics was not investigated. Therefore, the purpose of this study is to contrast the estimation of the viscoelastic parameters at different thickness of gelpad with mechanical measurements. The experiments were conducted in a tissuemimicking phantom. The results confirm that the relaxed elastic constant (µ0) can be depreciated. In addition, a higher congruence was found in the viscous parameter (ηα) estimated at 6 and 7 mm. On the other hand, a difference in the order of fractional derivative (α) was found.

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Comparison Between Passive and Reverberant Shear Wave elastography: Preliminary results

Romero,

Lujan,

Flores

et al. 2024

2024 IEEE UFFC Latin America Ultrasonics Symposium (LAUS)

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Plantar Soft Tissue Characterization Using Reverberant Shear Wave Elastography: A Proof-of-Concept Study

Cited by 7 publications

References 32 publications

Characterisation of the soft tissue viscous and elastic properties using ultrasound elastography and rheological models: validation and applications in plantar soft tissue assessment

Characterisation of the soft tissue viscous and elastic properties using ultrasound elastography and rheological models: validation and applications in plantar soft tissue assessment

Mechanical validation of viscoelastic parameters for different interface pressures using the Kelvin-Voigt fractional derivative model

Comparison Between Passive and Reverberant Shear Wave elastography: Preliminary results

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