Article
Acoustics
Shaheeda A. Adusei, Adriana Gregory, Eric C. Polley, Azra Alizad, Mostafa Fatemi
Summary: The study compared ultrasound bladder vibrometry (UBV) parameters obtained in supine and sitting positions, finding that the measurements in both positions were consistent and repeatable. This suggests that UBV can be reliably used to assess bladder characteristics regardless of the patient's position.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Antonio Gomez, Antonio Callejas, Guillermo Rus, Nader Saffari
Summary: This article experimentally validates a wave propagation model for transluminal propagation based on a Kelvin Voigt Fractional Derivative wave equation, which accurately simulates the shear wave propagation in soft tissue.
SCIENTIFIC REPORTS
(2022)
Article
Hematology
Haifang Liu, Yuping Zhu, Jie Jiao, Jia Yuan, Tianning Pu, Qiang Yong
Summary: This study aimed to assess the elasticity of Hashimoto's thyroiditis through SWE and found significant impact of gender on healthy thyroid elasticity values as well as variations in elasticity values among different stages of Hashimoto's thyroiditis patients. Low degree correlation between elasticity values and TPOAB was observed in male patients, while there was no such correlation in female patients.
CLINICAL HEMORHEOLOGY AND MICROCIRCULATION
(2022)
Article
Medicine, General & Internal
Mohamed A. Bedewi, Ayman A. Elsifey, Tariq Alfaifi, Ayman K. Saleh, Sherine M. Swify, Kholoud J. Sandougah
Summary: This study aimed to investigate the sonoelastographic features of the sartorius muscle and its relation to demographic factors. The results showed a positive correlation between the elastic modulus of the right sartorius muscle, weight, and body mass index, serving as a reference point for evaluating sartorius muscle stiffness in future research.
Article
Engineering, Mechanical
K. Tadayon, R. Lemanis, B. Bar-On, I Zlotnikov
Summary: This research expands the classical formulations in Hertzian contact mechanics to derive an analytical description of contact with inhomogeneous materials, which can be applied in synthetic, geological, and biological systems. The developed expression is successfully validated using experimental and numerical methods, providing a stepping-stone towards establishing an analytical description of contact with complex structures.
EXTREME MECHANICS LETTERS
(2022)
Article
Engineering, Biomedical
Nicholas R. Hugenberg, Tuhin Roy, Hadiya Harrigan, Margherita Capriotti, Hyoung-Ki Lee, Murthy Guddati, James F. Greenleaf, Matthew W. Urban, Wilkins Aquino
Summary: A new method is proposed to improve the accuracy of materials characterization through modeling and analytical frameworks, with validation of method effectiveness through in silico tests.
PHYSICS IN MEDICINE AND BIOLOGY
(2021)
Article
Optics
Konstantin Shcherbin, Igor Gvozdovskyy, Alexandr Shumelyuk, Jonathan Slagle, Dean R. Evans
Summary: A two-wave mixing adaptive interferometer based on a liquid crystal light valve with a semiconductor GaAs substrate is developed and investigated in this study. The local response of the dynamic hologram recorded in the liquid crystal layer enables the detection of small phase modulations of the object beam. Experimental results reveal that the interferometer exhibits temporal adaptability in the subsecond range, and the large optical nonlinearity of the cell enhances the sensitivity for measuring small displacements.
Article
Acoustics
Marina Bakaric, Paul Fromme, Andrew Hurrell, Srinath Rajagopal, Piero Miloro, Bajram Zeqiri, Benjamin T. Cox, Bradley E. Treeby
Summary: The research highlights the significant impact of temperature on the output of PZT transducers, showing an increase in efficiency with temperature. Results were consistent when using the same signal chain for measurement, but transducers exhibited different behavior when driven using a pulser.
Article
Entomology
Nathan Justus, Rodrigo Krugner, Ross L. Hatton
Summary: This paper presents a novel noncontact technique using video cameras to analyze vibrational signals transmitted through spiderwebs. The technique is validated against laser Doppler vibrometry and shows comparable results. The study highlights the importance of understanding how spiders perceive the world through their webs and the potential for new biological and engineering techniques.
Article
Engineering, Multidisciplinary
Gael Pierson, Richard Kouitat-Njiwa, Pierre Bravetti
Summary: Micropolar elasticity is a multi-fields problem, and the numerical solution of the field equations by combining local point interpolation method with pure BEM can be applied to 3D problems. The effectiveness of this approach has been demonstrated in examples such as indentation, and an initial analysis of the impact of microstructure on macroscopic response is presented.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2021)
Article
Engineering, Mechanical
Panpan Weng, Xiaochun Yin, Wei Hu, Hao Yuan, Chuanqing Chen, Huaiping Ding, Bo Yu, Wenhao Xie, Liang Jiang, Hui Wang
Summary: Elastic deformation on indenter significantly influences indentation measurements, with post-yield deformation exhibiting piecewise linear characteristics. Linear contact constitutive equations dependent on elastic deformation of the indenter are derived using curve-fitting approach. An explicit theoretical contact model is presented to predict real contact radius, contact force, and deformations of contacting bodies in a range from elastic to finite plastic deformations, verified numerically and experimentally.
TRIBOLOGY INTERNATIONAL
(2021)
Review
Optics
Sudheesh K. Rajput, Osamu Matoba, Yuki Takase, Tomoyoshi Inoue, Kohei Itaya, Manoj Kumar, Xiangyu Quan, Peng Xia, Yasuhiro Awatsuji
Summary: Sound is an important physical phenomenon that can be explained and visualized using multiparameter digital holography (DH). This paper provides a brief review of sound field imaging techniques, focusing on the multiparameter imaging capability of DH, and presents several experimental results for imaging sound in both audible and ultrasound ranges.
Article
Engineering, Multidisciplinary
Toan Minh Le, Wipavee Wongviboonsin, Jintara Lawongkerd, Tinh Quoc Bui, Jaroon Rungamornrat
Summary: This study investigates the simultaneous influence of surface and couple stresses on the nonsymmetrical frictionless indentation of a linearly elastic, homogeneous, and isotropic half plane. The mechanical response of the surface layer and bulk materials is described using surface-elasticity and couple-stress elasticity theories. Numerical schemes are developed to obtain the solutions for indentation behaviors and elastic responses, and the strong size-dependency of solutions is observed. The findings provide valuable information for understanding the mechanical properties of materials through micro-/nano-indentation tests and contribute to further investigations in micro-/nano-mechanics.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Acoustics
Tagedpdavid Skoloudik, Petra Kesnerova, Jaroslav Vomacka, Tomas Hrbac, David Netuka, Serhyi Forostyak, Martin Roubec, Roman Herzig, Tomas Belsan
Summary: This study using shear-wave elastography (SWE) found that asymptomatic stable carotid plaques had significantly higher elasticity compared to asymptomatic progressive and symptomatic plaques. SWE proved to be a helpful modality in differentiating between stable and unstable atherosclerotic plaques in carotid arteries.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Lesa Brown, Catherine S. Stephens, Paul G. Allison, Florence Sanchez
Summary: The study investigated the influence of adding carbon nanofibers (CNFs) on the micromechanical properties of cement paste, revealing that CNFs promoted the formation of higher modulus C-S-H phases in the paste, leading to an increase in the paste's elastic modulus.
Article
Acoustics
Hyoung-Ki Lee, James F. Greenleaf, Matthew W. Urban
Summary: Plane wave transmission has various applications in ultrasound imaging. Conventional PW compounding techniques suffer from displacement estimation errors. This study proposes a new scheme to improve the quality of PW compounding.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Article
Acoustics
Yuqi Wang, Daniel S. Jacobson, Matthew W. Urban
Summary: A non-invasive method combining quasi-static and shear wave elastography was developed to estimate the localized stress-strain curve of materials. The method was tested on custom-made tissue-mimicking phantoms and showed good agreement with mechanical testing results.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2022)
Article
Engineering, Biomedical
Margherita Capriotti, Tuhin Roy, Nicholas R. Hugenberg, Hadiya Harrigan, Hon-Chi Lee, Wilkins Aquino, Murthy Guddati, James F. Greenleaf, Matthew W. Urban
Summary: This study investigated the effects of the shape and location of the acoustic radiation force (ARF) beam on the measurements of arterial dispersion ultrasound vibrometry (ADUV). Experimental evaluations on an arterial phantom and in vivo validation showed that the shape of the beam controls the selection and nature of the induced modes, while the location affects the measured dispersion curves.
PHYSICS IN MEDICINE AND BIOLOGY
(2022)
Article
Acoustics
Piotr Kijanka, Matthew W. Urban
Summary: In this study, an improved method for measuring shear wave attenuation, called two-point frequency shift power (2P-FSP), was proposed and tested using numerical and experimental data. The results showed that the 2P-FSP method provides improved results over the 2P-FS technique for lower signal-to-noise ratio (SNR) and locations farther from the push location considered, and can be used to measure attenuation of viscoelastic soft tissues.
Article
Radiology, Nuclear Medicine & Medical Imaging
Tim Nordenfur, Kenneth Caidahl, Dmitry Grishenkov, Elira Maksuti, David Marlevi, Matthew W. Urban, Matilda Larsson
Summary: Shear wave elastography is a promising technique for assessing arterial stiffness. This study investigated the safety of SWE by examining the induced arterial strain and strain rate. The results showed that SWE does not expose the artery to higher strain rate than normal blood pressure variations and the induced strain is one order of magnitude higher than normal blood pressure variations.
BIOMEDICAL PHYSICS & ENGINEERING EXPRESS
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Christine U. Lee, Nicholas B. Larson, Matthew W. Urban, A. Lee Miller, Susheil Uthamaraj, Mara A. Piltin, James W. Jakub, Asha A. Bhatt, James F. Greenleaf, Gina K. Hesley
Summary: The study aimed to identify biopsy markers that show actionable twinkling in cadaveric breast and assess the association between actionable twinkling and marker surface roughness. Certain breast biopsy markers exhibited actionable twinkling in cadaveric breast, and this twinkling was associated with higher marker surface roughness.
AMERICAN JOURNAL OF ROENTGENOLOGY
(2023)
Article
Engineering, Biomedical
Hyoung-Ki Lee, Charles B. Capron, Hsiao-Chuan Liu, Tuhin Roy, Murthy N. Guddati, James F. Greenleaf, Matthew W. Urban
Summary: This study examines an artery-mimicking tube in water using three-dimensional measurements to provide a comprehensive understanding of the waves produced and their motion along the tube. The results categorize the motion into transient and steady state responses, with the waves propagating both axially and circumferentially. By successfully separating and visualizing the different waves, this study offers opportunities for improving the measurement of arterial mechanical properties.
PHYSICS IN MEDICINE AND BIOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Eric E. Brost, Bradley J. Stish, Christine U. Lee, Matthew W. Urban, Christopher L. Deufel
Summary: This study aimed to improve the visibility of high-dose rate (HDR) brachytherapy needles under B-mode ultrasound imaging by applying an echogenic surface coating. The results showed that the echogenic coating reduced imaging artifacts, improved needle contrast, and the improvement increased with increasing coating thickness.
Article
Acoustics
Yuqi Wang, Shigeto Ono, Matthew P. Johnson, Nicholas B. Larson, Ted Lynch, Matthew W. Urban
Summary: This study aimed to investigate the mechanical property variability of two lots of CIRS Model 039 phantoms. Shear wave elastography measurements were conducted on each phantom and multilevel functional principal component analysis was performed. The results showed that the group velocity had low standard deviations and most individual phantoms had phase velocity curves within the 95% confidence interval. Therefore, MFPCA is an effective tool for analyzing the inter- and intra-phantom variability of phase velocity curves.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2023)
Article
Engineering, Biomedical
Hsiao-Chuan Liu, Bipin Gaihre, Piotr Kijanka, Lichun Lu, Matthew W. W. Urban
Summary: Hydrogel scaffolds have become an important platform for cellular therapy and tissue engineering in regenerative medicine. However, the current standard method to characterize mechanical properties of hydrogels, called dynamic mechanical analysis (DMA), has limitations. In this study, a novel technique called acoustic force elastography microscopy (AFEM) was proposed. AFEM can evaluate the elastic properties of tissue engineering scaffolds in a non-contact and non-destructive manner, providing a promising technique for quantifying elastic properties and exploring elastic changes in cell-laden scaffolds.
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2023)
Proceedings Paper
Acoustics
Robert J. McGough, Matthew W. Urban
Summary: This paper introduces a fractional calculus model to describe the effects of propagation and attenuation in shear wave parameter estimation. Different power law exponents are evaluated in the model and it is found that using the Zolotarev fractional derivative leads to excellent agreement with measured data.
2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS)
(2022)
Proceedings Paper
Acoustics
Nicholas A. Bannon, Matthew W. Urban, Robert J. McGough
Summary: This study conducts rapid simulations of three-dimensional shear wave propagation in viscoelastic media using a Kelvin-Voigt model, accelerated by Green's functions with GPU parallelization and HPC resources. Shear wave speed estimates are obtained through cross-correlations from 3D waveforms, and a nonlinear least-squares approach is proposed to reduce the error in estimation by considering propagation, attenuation, and waveform spreading.
2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS)
(2022)
Article
Oncology
James W. Jakub, Gina K. Hesley, Nicholas B. Larson, Michael J. Yaszemski, A. Lee Miller, James F. Greenleaf, Matthew W. Urban, Christine U. Lee
Summary: This study evaluates the short-term safety and comparability of a nonmetallic twinkle marker to standard breast biopsy clips and radioactive seeds in terms of their visibility on color Doppler ultrasound. The results demonstrate that the twinkle marker is easily identifiable and has comparable safety and detection ease to the biopsy clip, suggesting its potential for clinical use.
RADIOLOGY-IMAGING CANCER
(2022)
Proceedings Paper
Materials Science, Characterization & Testing
Hsiao-Chuan Liu, Matthew W. Urban
Summary: Mechanical properties of tissues are important indicators for disease states. Acoustic radiation force (ARF) is commonly used as an excitation source in optical coherence elastography (OCE) to determine mechanical properties, but its use requires complicated focusing alignment. This study introduces a new technique, harmonic oscillation OCE, which allows for the evaluation of mechanical properties of samples placed in a cell culture plate without contacting the samples.
OPTICAL ELASTOGRAPHY AND TISSUE BIOMECHANICS VIV
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Christine U. Lee, Matthew W. Urban, A. Lee Miller, Susheil Uthamaraj, James W. Jakub, Gina K. Hesley, Benjamin G. Wood, Nathan J. Brinkman, James L. Herrick, Nicholas B. Larson, Michael J. Yaszemski, James F. Greenleaf
Summary: Color Doppler twinkling is a valuable ultrasound feature in diagnosing urinary stones. This study investigates a polymeric material, PMMA, which twinkles and has measurable surface roughness and porosity. The comparison of different materials used for breast biopsy markers shows how twinkling can improve ultrasound detection.
EUROPEAN RADIOLOGY EXPERIMENTAL
(2022)
