Analysis of multiple shear wave modes in a nonlinear soft solid: Experiments and finite element simulations with a tilted acoustic radiation force

Caenen, Annette; Knight, Anna E.; Rouze, Ned C.; Bottenus, Nick; Segers, Patrick; Nightingale, Kathryn R.

doi:10.1016/j.jmbbm.2020.103754

Cited by 13 publications

(22 citation statements)

References 41 publications

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“…For years, three parameter models of ITI materials have been proposed for muscle SWEI modeling [29], [30], [46], but to date quantification of all three parameters has not been realized in in vivo ultrasound SWEI. Recent demonstration of the ability to resolve two wave fronts in phantoms [51] showed the feasibility of using a tilted excitation to reconstruct tensile anisotropy.…”

Section: Discussionmentioning

confidence: 99%

“…A volumetric rotational 3D SWEI acquisition system was developed using a rotating linear array probe and a standard SWEI sequence [51], [53]. A Philips ATL L7-4 array (Philips®, Andover, MA) was attached to a Verasonics Vantage 256 (Verasonics®, Kirkland, WA) ultrasound system.…”

Section: A Experimental 3d Swei In In Vivo Musclementioning

confidence: 99%

“…Recently, our group has demonstrated that it is possible to excite and observe multiple shear wave propagation modes in a uniaxially stretched polyvinyl alcohol phantom in which the stretch axis represents the material symmetry axis A [51]. This experimental setup is similar to that shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Full Characterization of in vivo Muscle as an Elastic, Incompressible, Transversely Isotropic Material Using Ultrasonic Rotational 3D Shear Wave Elasticity Imaging

Knight

Trutna

Rouze

et al. 2022

IEEE Trans. Med. Imaging

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Using a 3D rotational shear wave elasticity imaging (SWEI) setup, 3D shear wave data were acquired in the vastus lateralis of a healthy volunteer. The innate tilt between the transducer face and the muscle fibers results in the excitation of multiple shear wave modes, allowing for more complete characterization of muscle as an elastic, incompressible, transversely isotropic (ITI) material. The ability to measure both the shear vertical (SV) and shear horizontal (SH) wave speed allows for measurement of three independent parameters needed for full ITI material characterization: the longitudinal shear modulus µ L , the transverse shear modulus µ T , and the tensile anisotropy χ E . Herein we develop and validate methodology to estimate these parameters and measure them in vivo, with µ L = 5.77 ± 1.00 kPa, µ T = 1.93 ± 0.41 kPa (giving shear anisotropy χµ = 2.11 ± 0.92), and χ E = 4.67 ± 1.40 in a relaxed vastus lateralis muscle. We also demonstrate that 3D SWEI can be used to more accurately characterize muscle mechanical properties as compared to 2D SWEI.

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Section: Discussionmentioning

confidence: 99%

Section: A Experimental 3d Swei In In Vivo Musclementioning

confidence: 99%

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Full Characterization of in vivo Muscle as an Elastic, Incompressible, Transversely Isotropic Material Using Ultrasonic Rotational 3D Shear Wave Elasticity Imaging

Knight

Trutna

Rouze

et al. 2022

IEEE Trans. Med. Imaging

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“…The second eigenvalue corresponds to a pure shear wave, i.e. with eigenvector parallel to (x 2 ), also known a shear horizontal (SH) mode (Caenen et al 2020. Because for this mode the displacement is perpendicular to the imaging plane (i.e.…”

Section: Shear Vertical and Shear Horizontal Modesmentioning

confidence: 99%

In plane quantification of in vivo muscle elastic anisotropy factor by steered ultrasound pushing beams

Ngo,

Andrade,

Brum

et al. 2024

Phys. Med. Biol.

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Objective: Skeletal muscles are organized into distinct layers and exhibit anisotropic characteristics across various scales. Assessing the arrangement of skeletal muscles may provide valuable biomarkers for diagnosing muscle-related pathologies and evaluating the efficacy of clinical interventions. Approach: In this study, we propose a novel ultrafast ultrasound sequence constituted of steered pushing beams was proposed for ultrasound elastography applications in transverse isotropic muscle. Based on the propagation of the shear wave vertical mode, it is possible to fit the experimental results to retrieve in the same imaging plane, the shear modulus parallel to fibers as well as the elastic anisotropy factor (ratio of Young’s moduli times the shear modulus perpendicular to fibers). Main results: The technique was demonstrated in vitro in phantoms and ex vivo in fusiform beef muscles. At last, the technique was applied in vivo on fusiform muscles (biceps brachii) and mono-pennate muscles (gastrocnemius medialis) during stretching and contraction. Significance: This novel sequence provides access to new structural and mechanical biomarkers of muscle tissue, including the elastic anisotropy factor, within the same imaging plane. Additionally, it enables the investigation of multiples parameters during muscle active and passive length changes.

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“…Thus, all three parameters required to characterize an incompressible TI material can be measured by observing shear wave propagation in the material. Finally, in the recent work of ( Rouze et al, 2019 ) and ( Caenen et al, 2020 ) the following terminology was used to describe both transverse modes: a SH mode (i.e. defined in Eq.…”

Section: Shear Wave Propagation In Transverse Isotropic Mediummentioning

confidence: 99%

Anisotropy in ultrasound shear wave elastography: An add-on to muscles characterization

et al. 2022

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Ultrasound shear wave elastography was developed the past decade, bringing new stiffness biomarker in clinical practice. This biomarker reveals to be of primarily importance for the diagnosis of breast cancer or liver fibrosis. In muscle this biomarker become much more complex due to the nature of the muscle itself: an anisotropic medium. In this manuscript we depict the underlying theory of propagating waves in such anisotropic medium. Then we present the available methods that can consider and quantify this parameter. Advantages and drawbacks are discussed to open the way to imagine new methods that can free this biomarker in a daily clinical practice.

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Analysis of multiple shear wave modes in a nonlinear soft solid: Experiments and finite element simulations with a tilted acoustic radiation force

Cited by 13 publications

References 41 publications

Full Characterization of in vivo Muscle as an Elastic, Incompressible, Transversely Isotropic Material Using Ultrasonic Rotational 3D Shear Wave Elasticity Imaging

Full Characterization of in vivo Muscle as an Elastic, Incompressible, Transversely Isotropic Material Using Ultrasonic Rotational 3D Shear Wave Elasticity Imaging

In plane quantification of in vivo muscle elastic anisotropy factor by steered ultrasound pushing beams

Anisotropy in ultrasound shear wave elastography: An add-on to muscles characterization

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