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Holmström A, Meriläinen A, Hyvönen J, Nolvi A, Ylitalo T, Steffen K, Björkenheim R, Strömberg G, Nieminen HJ, Kassamakov I, Pajarinen J, Hupa L, Salmi A, Hæggström E, Lindfors NC. Evaluation of bone growth around bioactive glass S53P4 by scanning acoustic microscopy co-registered with optical interferometry and elemental analysis. Sci Rep 2023; 13:6646. [PMID: 37095138 PMCID: PMC10126192 DOI: 10.1038/s41598-023-33454-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 04/13/2023] [Indexed: 04/26/2023] Open
Abstract
Bioactive glass (BAG) is a bone substitute that can be used in orthopaedic surgery. Following implantation, the BAG is expected to be replaced by bone via bone growth and gradual degradation of the BAG. However, the hydroxyapatite mineral forming on BAG resembles bone mineral, not providing sufficient contrast to distinguish the two in X-ray images. In this study, we co-registered coded-excitation scanning acoustic microscopy (CESAM), scanning white light interferometry (SWLI), and scanning electron microscopy with elemental analysis (Energy Dispersive X-ray Spectroscopy) (SEM-EDX) to investigate the bone growth and BAG reactions on a micron scale in a rabbit bone ex vivo. The acoustic impedance map recorded by the CESAM provides high elasticity-associated contrast to study materials and their combinations, while simultaneously producing a topography map of the sample. The acoustic impedance map correlated with the elemental analysis from SEM-EDX. SWLI also produces a topography map, but with higher resolution than CESAM. The two topography maps (CESAM and SWLI) were in good agreement. Furthermore, using information from both maps simultaneously produced by the CESAM (acoustic impedance and topography) allowed determining regions-of-interest related to bone formation around the BAG with greater ease than from either map alone. CESAM is therefore a promising tool for evaluating the degradation of bone substitutes and the bone healing process ex vivo.
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Affiliation(s)
- Axi Holmström
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland.
| | - Antti Meriläinen
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Jere Hyvönen
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Anton Nolvi
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Tuomo Ylitalo
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Kari Steffen
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Robert Björkenheim
- Department of Orthopaedics and Traumatology, Department of Surgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Gustav Strömberg
- Department of Hand Surgery, Department of Surgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Heikki J Nieminen
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
- Medical Ultrasonics Laboratory (MEDUSA), Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo, Finland
| | - Ivan Kassamakov
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Jukka Pajarinen
- Department of Plastic Surgery, Department of Surgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Leena Hupa
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
| | - Ari Salmi
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Edward Hæggström
- Electronics Research Laboratory, Department of Physics, University of Helsinki, Helsinki, Finland
| | - Nina C Lindfors
- Department of Hand Surgery, Department of Surgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
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Chen C, Huang Y, Chen P, Hsu Y, Jaw F, Ho M. Modification of gelatin and photocured
3D
‐printed resin to prepare biomimetic phantoms for ultrasound‐guided minimally invasive surgeries. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Chien‐Hua Chen
- Department of Biomedical Engineering National Taiwan University Taipei City Taiwan
| | - Yi‐Fan Huang
- Department of Chemical Engineering National Taiwan University of Science and Technology Taipei City Taiwan
| | - Po‐Hao Chen
- Department of Chemical Engineering National Taiwan University of Science and Technology Taipei City Taiwan
| | - Yu‐Tung Hsu
- Department of Chemical Engineering National Taiwan University of Science and Technology Taipei City Taiwan
| | - Fu‐Shan Jaw
- Department of Biomedical Engineering National Taiwan University Taipei City Taiwan
| | - Ming‐Hua Ho
- Department of Chemical Engineering National Taiwan University of Science and Technology Taipei City Taiwan
- R&D Center for Membrane Technology National Taiwan University of Science and Technology Taipei Taiwan
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Hoerig C, Mamou J. Advanced Topics in Quantitative Acoustic Microscopy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1403:253-277. [PMID: 37495922 DOI: 10.1007/978-3-031-21987-0_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Quantitative acoustic microscopy (QAM) reconstructs two-dimensional (2D) maps of the acoustic properties of thin tissue sections. Using ultrahigh frequency transducers (≥ 100 MHz), unstained, micron-thick tissue sections affixed to glass are raster scanned to collect radiofrequency (RF) echo data and generate parametric maps with resolution approximately equal to the ultrasound wavelength. 2D maps of speed of sound, mass density, acoustic impedance, bulk modulus, and acoustic attenuation provide unique and quantitative information that is complementary to typical optical microscopy modalities. Consequently, many biomedical researchers have great interest in utilizing QAM instruments to investigate the acoustic and biomechanical properties of tissues at the micron scale. Unfortunately, current state-of-the-art QAM technology is costly, requires operation by a trained user, and is accompanied by substantial experimental challenges, many of which become more onerous as the transducer frequency is increased. In this chapter, typical QAM technology and standard image formation methods are reviewed. Then, novel experimental and signal processing approaches are presented with the specific goal of reducing QAM instrument costs and improving ease of use. These methods rely on modern techniques based on compressed sensing and sparsity-based deconvolution methods. Together, these approaches could serve as the basis of the next generation of QAM instruments that are affordable and provide high-resolution QAM images with turnkey solutions requiring nearly no training to operate.
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Affiliation(s)
- Cameron Hoerig
- Department of Radiology, Weill Cornell Medicine, New York, NY, USA
| | - Jonathan Mamou
- Department of Radiology, Weill Cornell Medicine, New York, NY, USA.
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Wear KA. Mechanisms of Interaction of Ultrasound With Cancellous Bone: A Review. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2020; 67:454-482. [PMID: 31634127 PMCID: PMC7050438 DOI: 10.1109/tuffc.2019.2947755] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Ultrasound is now a clinically accepted modality in the management of osteoporosis. The most common commercial clinical devices assess fracture risk from measurements of attenuation and sound speed in cancellous bone. This review discusses fundamental mechanisms underlying the interaction between ultrasound and cancellous bone. Because of its two-phase structure (mineralized trabecular network embedded in soft tissue-marrow), its anisotropy, and its inhomogeneity, cancellous bone is more difficult to characterize than most soft tissues. Experimental data for the dependencies of attenuation, sound speed, dispersion, and scattering on ultrasound frequency, bone mineral density, composition, microstructure, and mechanical properties are presented. The relative roles of absorption, scattering, and phase cancellation in determining attenuation measurements in vitro and in vivo are delineated. Common speed of sound metrics, which entail measurements of transit times of pulse leading edges (to avoid multipath interference), are greatly influenced by attenuation, dispersion, and system properties, including center frequency and bandwidth. However, a theoretical model has been shown to be effective for correction for these confounding factors in vitro and in vivo. Theoretical and phantom models are presented to elucidate why cancellous bone exhibits negative dispersion, unlike soft tissue, which exhibits positive dispersion. Signal processing methods are presented for separating "fast" and "slow" waves (predicted by poroelasticity theory and supported in cancellous bone) even when the two waves overlap in time and frequency domains. Models to explain dependencies of scattering on frequency and mean trabecular thickness are presented and compared with measurements. Anisotropy, the effect of the fluid filler medium (marrow in vivo or water in vitro), phantoms, computational modeling of ultrasound propagation, acoustic microscopy, and nonlinear properties in cancellous bone are also discussed.
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Ojanen X, Tanska P, Malo M, Isaksson H, Väänänen S, Koistinen A, Grassi L, Magnusson S, Ribel-Madsen S, Korhonen R, Jurvelin J, Töyräs J. Tissue viscoelasticity is related to tissue composition but may not fully predict the apparent-level viscoelasticity in human trabecular bone – An experimental and finite element study. J Biomech 2017; 65:96-105. [DOI: 10.1016/j.jbiomech.2017.10.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 09/01/2017] [Accepted: 10/01/2017] [Indexed: 12/19/2022]
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Potsika VT, Protopappas VC, Grivas KN, Gortsas TV, Raum K, Polyzos DK, Fotiadis DI. Numerical evaluation of the backward propagating acoustic field in healing long bones. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2017; 142:962. [PMID: 28863592 DOI: 10.1121/1.4998722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The propagation of ultrasound in healing long bones induces complex scattering phenomena due to the interaction of an ultrasonic wave with the composite nature of callus and osseous tissues. This work presents numerical simulations of ultrasonic propagation in healing long bones using the boundary element method aiming to provide insight into the complex scattering mechanisms and better comprehend the state of bone regeneration. Numerical models of healing long bones are established based on scanning acoustic microscopy images from successive postoperative weeks considering the effect of the nonhomogeneous callus structure. More specifically, the scattering amplitude and the acoustic pressure variation are calculated in the backward direction to investigate their potential to serve as quantitative and qualitative indicators for the monitoring of the bone healing process. The role of the excitation frequency is also examined considering frequencies in the range 0.2-1 MHz. The results indicate that the scattering amplitude decreases at later stages of healing compared to earlier stages of healing. Also, the acoustic pressure could provide supplementary qualitative information on the interaction of the scattered energy with bone and callus.
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Affiliation(s)
- Vassiliki T Potsika
- Unit of Medical Technology and Intelligent Information Systems, Department of Materials Science and Engineering, University of Ioannina, GR 45110 Ioannina, Greece
| | - Vasilios C Protopappas
- Unit of Medical Technology and Intelligent Information Systems, Department of Materials Science and Engineering, University of Ioannina, GR 45110 Ioannina, Greece
| | - Konstantinos N Grivas
- Department of Mechanical Engineering and Aeronautics, University of Patras, GR 26500 Patras, Greece
| | - Theodoros V Gortsas
- Department of Mechanical Engineering and Aeronautics, University of Patras, GR 26500 Patras, Greece
| | - Kay Raum
- Berlin-Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin Berlin, AugustenburgerPlatz 1, 13353 Berlin, Germany
| | - Demosthenes K Polyzos
- Department of Mechanical Engineering and Aeronautics, University of Patras, GR 26500 Patras, Greece
| | - Dimitrios I Fotiadis
- Unit of Medical Technology and Intelligent Information Systems, Department of Materials Science and Engineering, University of Ioannina, GR 45110 Ioannina, Greece
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