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Professor Juha Toyras
Professor

Juha Toyras

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Overview

Background

Juha Töyräs holds a position of Professorial Research Fellow in the School of Information Technology and Electrical Engineering, The University of Queensland. He is also is the Head of Research and Innovation, Kuopio University Hospital and Wellbeing Services County of North Savo, and Professor of Medical Physics and Engineering, University of Eastern Finland. He has a PhD degree in the field of medical physics and his research is focused on medical devices and sensors, medical imaging, medical signal processing and connective tissue biomechanics. Since 2004, he has been the Vice/Co-Head of the Biophysics of Bone and Cartilage research group and Co-Head of the Sleep Technology and Analytics group since it was founded in January 2017 at the Department of Applied Physics, University of Eastern Finland. The groups are relatively large (three professors, c.20 research fellows and postdocs and >60 PhD students) and productive (>750 full papers and >80 PhD theses during the last 20 years). Professor Töyräs holds research grants from various European and Australian sources. He has published 323 peer-reviewed full scientific papers and numerous abstracts in international scientific meetings. In addition, he has completed supervision of 52 PhD students and number of MSc students. His papers have been cited over 14000 times and his Hirsch-index is 63 (Google Scholar). Currently, Professor Toyras supervises (University of Eastern Finland, The University of Queensland) c.20 PhD-students and number of research fellows in various fields of biomedical engineering. In addition to scientific publications and supervised academic theses, his work has led to patents and commercialization of scientific innovations. One example of this line of research is the development of a forehead EEG-electrode set for emergency medicine. The Bittium BrainStatus EEG-electrode set is patented, CE-approved and currently in global market (https://www.bittium.com/products_services/medical/bittium_brainstatus).

Availability

Professor Juha Toyras is:
Available for supervision

Qualifications

  • Masters (Coursework) of Science, University of Kuopio
  • Doctor of Philosophy, University of Kuopio

Works

Search Professor Juha Toyras’s works on UQ eSpace

406 works between 1999 and 2025

361 - 380 of 406 works

2007

Journal Article

Human articular cartilage proteoglycans are not undersulfated in osteoarthritis

Qu, Cheng-Juan, Rieppo, Jarno, Hyttinen, Mika, Lammi, Mikko J., Kiviranta, Ilkka, Kurkijärvi, Jatta, Jurvelin, Jukka and Töyräs, Juha (2007). Human articular cartilage proteoglycans are not undersulfated in osteoarthritis. Connective Tissue Research, 48 (1), 27-33. doi: 10.1080/03008200601044128

Human articular cartilage proteoglycans are not undersulfated in osteoarthritis

2007

Journal Article

Comparison of novel clinically applicable methodology for sensitive diagnostics of cartilage degeneration

Kiviranta, Panu, Töyräs, J., Nieminen, M. T., Laasanen, M. S., Saarakkala, S., Nieminen, H. J., Nissi, M. J. and Jurvelin, J. S. (2007). Comparison of novel clinically applicable methodology for sensitive diagnostics of cartilage degeneration. European Cells and Materials, 13, 46-55. doi: 10.22203/eCM.v013a05

Comparison of novel clinically applicable methodology for sensitive diagnostics of cartilage degeneration

2006

Journal Article

T2 relaxation time mapping reveals age- and species-related diversity of collagen network architecture in articular cartilage

Nissi, M. J., Rieppo, J., Töyräs, J., Laasanen, M. S., Kiviranta, I., Jurvelin, J. S. and Nieminen, M. T. (2006). T2 relaxation time mapping reveals age- and species-related diversity of collagen network architecture in articular cartilage. Osteoarthritis and Cartilage, 14 (12), 1265-1271. doi: 10.1016/j.joca.2006.06.002

T2 relaxation time mapping reveals age- and species-related diversity of collagen network architecture in articular cartilage

2006

Journal Article

Interrelationships between electrical properties and microstructure of human trabecular bone

Sierpowska, J., Hakulinen, M. A., Töyräs, J., Day, J. S., Weinans, H., Kiviranta, I., Jurvelin, J. S. and Lappalainen, R. (2006). Interrelationships between electrical properties and microstructure of human trabecular bone. Physics in Medicine and Biology, 51 (20) 014, 5289-5303. doi: 10.1088/0031-9155/51/20/014

Interrelationships between electrical properties and microstructure of human trabecular bone

2006

Journal Article

Quantitative ultrasound imaging detects degenerative changes in articular cartilage surface and subchondral bone

Saarakkala, Simo, Laasanen, Mikko S., Jurvelin, Jukka S. and Töyräs, Juha (2006). Quantitative ultrasound imaging detects degenerative changes in articular cartilage surface and subchondral bone. Physics in Medicine and Biology, 51 (20) 017, 5333-5346. doi: 10.1088/0031-9155/51/20/017

Quantitative ultrasound imaging detects degenerative changes in articular cartilage surface and subchondral bone

2006

Conference Publication

Ultrasound stimulates proteoglycan synthesis in bovine primary chondrocytes

Kopakkala-Tani, Milla, Leskinen, Jarkko J., Karjalainen, Hannu M., Karjalainen, Tero, Hynynen, Kullervo, Töyräs, Juha, Jurvelin, Jukka S. and Lammi, Mikko J. (2006). Ultrasound stimulates proteoglycan synthesis in bovine primary chondrocytes.

Ultrasound stimulates proteoglycan synthesis in bovine primary chondrocytes

2006

Conference Publication

Acoustic properties of articular cartilage under mechanical stress

Nieminen, Heikki J., Töyräs, Juha, Laasanen, Mikko S. and Jurvelin, Jukka S. (2006). Acoustic properties of articular cartilage under mechanical stress.

Acoustic properties of articular cartilage under mechanical stress

2006

Conference Publication

Biophysical diagnostics of normal, degenerated and repaired articular cartilage

Jurvelin, J. S., Kiviranta, P. J., Nieminen, M. T., Laasanen, M. S., Lammentausta, E., Saarakkala, S., Nieminen, H. J., Nissi, M. J., Rieppo, J. and Töyräs, J. (2006). Biophysical diagnostics of normal, degenerated and repaired articular cartilage.

Biophysical diagnostics of normal, degenerated and repaired articular cartilage

2006

Journal Article

Influence of overlying soft tissues on trabecular bone acoustic measurement at various ultrasound frequencies

Riekkinen, Ossi, Hakulinen, Mikko A., Timonen, Matti, Töyräs, Juha and Jurvelin, Jukka S. (2006). Influence of overlying soft tissues on trabecular bone acoustic measurement at various ultrasound frequencies. Ultrasound in Medicine and Biology, 32 (7), 1073-1083. doi: 10.1016/j.ultrasmedbio.2006.03.012

Influence of overlying soft tissues on trabecular bone acoustic measurement at various ultrasound frequencies

2006

Journal Article

Collagen network primarily controls poisson's ratio of bovine articular cartilage in compression

Kiviranta, Panu, Rieppo, Jarno, Korhonen, Rami K., Julkunen, Petro, Töyräs, Juha and Jurvelin, Jukka S. (2006). Collagen network primarily controls poisson's ratio of bovine articular cartilage in compression. Journal of Orthopaedic Research, 24 (4), 690-699. doi: 10.1002/jor.20107

Collagen network primarily controls poisson's ratio of bovine articular cartilage in compression

2006

Journal Article

Ultrasonic characterization of human trabecular bone microstructure

Hakulinen, Mikko A., Day, Judd S., Töyräs, Juha, Weinans, Harrie and Jurvelin, Jukka S. (2006). Ultrasonic characterization of human trabecular bone microstructure. Physics in Medicine and Biology, 51 (6), 1633-1648. doi: 10.1088/0031-9155/51/6/019

Ultrasonic characterization of human trabecular bone microstructure

2006

Journal Article

Quantitative ultrasound imaging of spontaneous repair of porcine cartilage

Laasanen, M. S., Töyräs, J., Vasara, A., Saarakkala, S., Hyttinen, M. M., Kiviranta, I. and Jurvelin, Jukka S. (2006). Quantitative ultrasound imaging of spontaneous repair of porcine cartilage. Osteoarthritis and Cartilage, 14 (3), 258-263. doi: 10.1016/j.joca.2005.09.011

Quantitative ultrasound imaging of spontaneous repair of porcine cartilage

2005

Journal Article

Site-specific ultrasound reflection properties and superficial collagen content of bovine knee articular cartilage

Laasanen, Mikko S., Saarakkala, Simo, Töyräs, Juha, Rieppo, Jarno and Jurvelin, Jukka S. (2005). Site-specific ultrasound reflection properties and superficial collagen content of bovine knee articular cartilage. Physics in Medicine and Biology, 50 (14), 3221-3233. doi: 10.1088/0031-9155/50/14/002

Site-specific ultrasound reflection properties and superficial collagen content of bovine knee articular cartilage

2005

Journal Article

Prediction of density and mechanical properties of human trabecular bone in vitro by using ultrasound transmission and backscattering measurements at 0.2-6.7 MHz frequency range

Hakulinen, Mikko A., Day, Judd S., Töyräs, Juha, Timonen, Matti, Kröger, Heikki, Weinans, Harrie, Kiviranta, Ilkka and Jurvelin, Jukka S. (2005). Prediction of density and mechanical properties of human trabecular bone in vitro by using ultrasound transmission and backscattering measurements at 0.2-6.7 MHz frequency range. Physics in Medicine and Biology, 50 (8), 1629-1642. doi: 10.1088/0031-9155/50/8/001

Prediction of density and mechanical properties of human trabecular bone in vitro by using ultrasound transmission and backscattering measurements at 0.2-6.7 MHz frequency range

2005

Journal Article

Improvement of arthroscopic cartilage stiffness probe using amorphous diamond coating

Töyräs, Juha, Korhonen, Rami K., Voutilainen, Tanja, Jurvelin, Jukka S. and Lappalainen, Reijo (2005). Improvement of arthroscopic cartilage stiffness probe using amorphous diamond coating. Journal of Biomedical Materials Research - Part B Applied Biomaterials, 73 (1), 15-22. doi: 10.1002/jbm.b.30173

Improvement of arthroscopic cartilage stiffness probe using amorphous diamond coating

2005

Conference Publication

Prediction of mechanical properties of human trabecular bone by electrical measurements

Sierpowska, J., Hakulinen, M. A., Töyräs, J., Day, J. S., Weinans, H., Jurvelin, J. S. and Lappalainen, R. (2005). Prediction of mechanical properties of human trabecular bone by electrical measurements. doi: 10.1088/0967-3334/26/2/012

Prediction of mechanical properties of human trabecular bone by electrical measurements

2004

Journal Article

Undersulfated chondroitin sulfate does not increase in osteoarthritic cartilage

Lammi, Mikko J, Qu, Cheng-Juan, Laasanen, Mikko S, Saarakkala, Simo, Rieppo, Jarno, Jurvelin, Jukka S and Töyräs, Juha (2004). Undersulfated chondroitin sulfate does not increase in osteoarthritic cartilage. The Journal of rheumatology, 31 (12), 2449-53.

Undersulfated chondroitin sulfate does not increase in osteoarthritic cartilage

2004

Conference Publication

Effect of bone mineral density on bone screw insertion torque - A study with peripheral quantitative computed tomography (pQCT) and human femoral bone

Koistinen, A., Santavirta, S. S., Kröger, H., Töyräs, J. and Lappalainen, R. (2004). Effect of bone mineral density on bone screw insertion torque - A study with peripheral quantitative computed tomography (pQCT) and human femoral bone. Transactions - 7th World Biomaterials Congress, , , May 17, 2004-May 21, 2004.

Effect of bone mineral density on bone screw insertion torque - A study with peripheral quantitative computed tomography (pQCT) and human femoral bone

2004

Conference Publication

Mechano-acoustic determination of Young's modulus of articular cartilage

Saarakkala, Simo, Korhonen, Rami K., Laasanen, Mikko S., Töyräs, Juha, Rieppo, Jarno and Jurvelin, Jukka S. (2004). Mechano-acoustic determination of Young's modulus of articular cartilage.

Mechano-acoustic determination of Young's modulus of articular cartilage

2004

Journal Article

Ability of ultrasound backscattering to predict mechanical properties of bovine trabecular bone

Hakulinen, Mikko A., Töyräs, Juha, Saarakkala, Simo, Hirvonen, Jani, Kröger, Heikki and Jurvelin, Jukka S. (2004). Ability of ultrasound backscattering to predict mechanical properties of bovine trabecular bone. Ultrasound in Medicine and Biology, 30 (7), 919-927. doi: 10.1016/j.ultrasmedbio.2004.04.006

Ability of ultrasound backscattering to predict mechanical properties of bovine trabecular bone

Funding

Current funding

  • 2021 - 2025
    Revolution of sleep diagnostics and personalized health care based on digital diagnostics and therapeutics with health data integration
    NHMRC European Union Collaborative Research Grants
    Open grant
  • 2021 - 2025
    Revolution of sleep diagnostics and personalized health care based on digital diagnostics and therapeutics with health data integration
    University of Reykjavik
    Open grant

Past funding

  • 2021 - 2024
    Deep learning and physiology based approach to derive and link obstructive sleep apnoea phenotypes and symptomatology
    NHMRC IDEAS Grants
    Open grant
  • 2021 - 2024
    Osteoarthritis Compass: Personalized prediction of disease onset and progression. (NHMRC Ideas Grant administered by Griffith University)
    Griffith University
    Open grant

Supervision

Availability

Professor Juha Toyras is:
Available for supervision

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Supervision history

Current supervision

Completed supervision

Media

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