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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

398 works between 1999 and 2025

301 - 320 of 398 works

2012

Journal Article

Hyperosmolaric contrast agents in cartilage tomography may expose cartilage to overload-induced cell death

Turunen, M. J., Töyräs, J., Lammi, M. J., Jurvelin, J. S. and Korhonen, R. K. (2012). Hyperosmolaric contrast agents in cartilage tomography may expose cartilage to overload-induced cell death. Journal of Biomechanics, 45 (3), 497-503. doi: 10.1016/j.jbiomech.2011.11.049

Hyperosmolaric contrast agents in cartilage tomography may expose cartilage to overload-induced cell death

2012

Journal Article

Diffusion of Gd-DTPA2- into articular cartilage

Salo, E. N., Nissi, M. J., Kulmala, K. A M, Tiitu, V., Töyräs, J. and Nieminen, M. T. (2012). Diffusion of Gd-DTPA2- into articular cartilage. Osteoarthritis and Cartilage, 20 (2), 117-126. doi: 10.1016/j.joca.2011.11.016

Diffusion of Gd-DTPA2- into articular cartilage

2011

Journal Article

Ultrasound speed varies in articular cartilage under indentation loading

Lötjönen, Pauno, Julkunen, Petro, Tiitu, Virpi, Jurvelin, Jukka S. and Töyräs, Juha (2011). Ultrasound speed varies in articular cartilage under indentation loading. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 58 (12) 6141171, 2772-2780. doi: 10.1109/TUFFC.2011.2143

Ultrasound speed varies in articular cartilage under indentation loading

2011

Journal Article

Computed tomography detects changes in contrast agent diffusion after collagen cross-linking typical to natural aging of articular cartilage

Kokkonen, H. T., Mäkelä, J., Kulmala, K. A. M., Rieppo, L., Jurvelin, J. S., Tiitu, V., Karjalainen, H. M., Korhonen, R. K., Kovanen, V. and Töyräs, J. (2011). Computed tomography detects changes in contrast agent diffusion after collagen cross-linking typical to natural aging of articular cartilage. Osteoarthritis and Cartilage, 19 (10), 1190-1198. doi: 10.1016/j.joca.2011.07.008

Computed tomography detects changes in contrast agent diffusion after collagen cross-linking typical to natural aging of articular cartilage

2011

Journal Article

Arthroscopic ultrasound assessment of articular cartilage in the human knee joint: a potential diagnostic method

Kaleva, Erna, Virén, Tuomas, Saarakkala, Simo, Sahlman, Janne, Sirola, Joonas, Puhakka, Jani, Paatela, Teemu, Kröger, Heikki, Kiviranta, Ilkka, Jurvelin, Jukka S. and Töyräs, Juha (2011). Arthroscopic ultrasound assessment of articular cartilage in the human knee joint: a potential diagnostic method. Cartilage, 2 (3), 246-253. doi: 10.1177/1947603510391781

Arthroscopic ultrasound assessment of articular cartilage in the human knee joint: a potential diagnostic method

2011

Journal Article

Alterations in structure and properties of collagen network of osteoarthritic and repaired cartilage modify knee joint stresses

Mononen, M. E., Julkunen, P., Töyräs, J., Jurvelin, J. S., Kiviranta, I. and Korhonen, R. K. (2011). Alterations in structure and properties of collagen network of osteoarthritic and repaired cartilage modify knee joint stresses. Biomechanics and Modeling in Mechanobiology, 10 (3), 357-369. doi: 10.1007/s10237-010-0239-1

Alterations in structure and properties of collagen network of osteoarthritic and repaired cartilage modify knee joint stresses

2011

Journal Article

Effects of non-optimal focusing on dual-frequency ultrasound measurements of bone

Malo, Markus K. H., Karjalainen, Janne P., Riekkinen, Ossi, Isaksson, Hanna, Jurvelin, Jukka S. and Töyräs, Juha (2011). Effects of non-optimal focusing on dual-frequency ultrasound measurements of bone. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 58 (6) 5895032, 1182-1188. doi: 10.1109/TUFFC.2011.1928

Effects of non-optimal focusing on dual-frequency ultrasound measurements of bone

2011

Journal Article

Detection of mechanical injury of articular cartilage using contrast enhanced computed tomography

Kokkonen, H. T., Jurvelin, J. S., Tiitu, V. and Töyräs, J. (2011). Detection of mechanical injury of articular cartilage using contrast enhanced computed tomography. Osteoarthritis and Cartilage, 19 (3), 295-301. doi: 10.1016/j.joca.2010.12.012

Detection of mechanical injury of articular cartilage using contrast enhanced computed tomography

2011

Journal Article

Effects of optical beam angle on quantitative optical coherence tomography (OCT) in normal and surface degenerated bovine articular cartilage

Huang, Yan-Ping, Saarakkala, Simo, Toyras, Juha, Wang, Li-Ke, Jurvelin, Jukka S. and Zheng, Yong-Ping (2011). Effects of optical beam angle on quantitative optical coherence tomography (OCT) in normal and surface degenerated bovine articular cartilage. Physics in Medicine and Biology, 56 (2), 491-509. doi: 10.1088/0031-9155/56/2/013

Effects of optical beam angle on quantitative optical coherence tomography (OCT) in normal and surface degenerated bovine articular cartilage

2011

Book Chapter

Linear acoustics of trabecular bone

Karjalainen, Janne P., Riekkinen, Ossi, Töyräs, Juha and Jurvelin, Jukka S. (2011). Linear acoustics of trabecular bone. Bone Quantitative Ultrasound. (pp. 265-289) Dordrecht: Springer Netherlands. doi: 10.1007/978-94-007-0017-8_10

Linear acoustics of trabecular bone

2011

Journal Article

Ultrasound evaluation of mechanical injury of bovine knee articular cartilage under arthroscopic control

Virén, Tuomas, Saarakkala, Simo, Tiitu, Virpi, Puhakka, Jani, Kiviranta, Ilkka, Jurvelin, Jukka S. and Töyräs, Juha (2011). Ultrasound evaluation of mechanical injury of bovine knee articular cartilage under arthroscopic control. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 58 (1) 5688408, 148-155. doi: 10.1109/TUFFC.2011.1781

Ultrasound evaluation of mechanical injury of bovine knee articular cartilage under arthroscopic control

2011

Journal Article

Structural parameters of normal and osteoporotic human trabecular bone are affected differently by microCT image resolution

Isaksson, H., Töyräs, J., Hakulinen, M., Aula, A. S., Tamminen, I., Julkunen, P., Kröger, H. and Jurvelin, J. S. (2011). Structural parameters of normal and osteoporotic human trabecular bone are affected differently by microCT image resolution. Osteoporosis International, 22 (1), 167-177. doi: 10.1007/s00198-010-1219-0

Structural parameters of normal and osteoporotic human trabecular bone are affected differently by microCT image resolution

2010

Conference Publication

Cepstrum method enables accurate assessment of thickness of cortical bone layers - Potential improvement for analysis of ultrasound backscatter from underlying trabecular matrix

Karjalainen, Janne P., Töyräs, Juha and Jurvelin, Jukka S. (2010). Cepstrum method enables accurate assessment of thickness of cortical bone layers - Potential improvement for analysis of ultrasound backscatter from underlying trabecular matrix. 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society, , , August 23, 2010-August 27, 2010.

Cepstrum method enables accurate assessment of thickness of cortical bone layers - Potential improvement for analysis of ultrasound backscatter from underlying trabecular matrix

2010

Journal Article

Simultaneous ultrasound measurement of articular cartilage and subchondral bone

Aula, A. S., Töyräs, J., Tiitu, V. and Jurvelin, J. S. (2010). Simultaneous ultrasound measurement of articular cartilage and subchondral bone. Osteoarthritis and Cartilage, 18 (12), 1570-1576. doi: 10.1016/j.joca.2010.09.009

Simultaneous ultrasound measurement of articular cartilage and subchondral bone

2010

Journal Article

Technical and practical improvements in arthroscopic indentation technique for diagnostics of articular cartilage softening

Timonen, M. A., TÖyräs, J., Aula, A. S., Karjalainen, J. P., Riekkinen, O. and Jurvelin, J. S. (2010). Technical and practical improvements in arthroscopic indentation technique for diagnostics of articular cartilage softening. Journal of Medical Engineering and Technology, 35 (1), 40-46. doi: 10.3109/03091902.2010.525684

Technical and practical improvements in arthroscopic indentation technique for diagnostics of articular cartilage softening

2010

Journal Article

Diffusion coefficients of articular cartilage for different CT and MRI contrast agents

Kulmala, K. A.M., Korhonen, R. K., Julkunen, P., Jurvelin, J. S., Quinn, T. M., Kröger, H. and Töyräs, J. (2010). Diffusion coefficients of articular cartilage for different CT and MRI contrast agents. Medical Engineering and Physics, 32 (8), 878-882. doi: 10.1016/j.medengphy.2010.06.002

Diffusion coefficients of articular cartilage for different CT and MRI contrast agents

2010

Journal Article

Quantitative evaluation of spontaneously and surgically repaired rabbit articular cartilage using intra-articular ultrasound method in situ

Virén, Tuomas, Saarakkala, Simo, Jurvelin, Jukka S., Pulkkinen, Hertta J., Tiitu, Virpi, Valonen, Piia, Kiviranta, Ilkka, Lammi, Mikko J. and Töyräs, Juha (2010). Quantitative evaluation of spontaneously and surgically repaired rabbit articular cartilage using intra-articular ultrasound method in situ. Ultrasound in Medicine and Biology, 36 (5), 833-839. doi: 10.1016/j.ultrasmedbio.2010.02.015

Quantitative evaluation of spontaneously and surgically repaired rabbit articular cartilage using intra-articular ultrasound method in situ

2010

Journal Article

2-D finite difference time domain model of ultrasound reflection from normal and osteoarthritic human articular cartilage surface

Kaleva, Erna, Liukkonen, Jukka, Töyräs, Juha, Saarakkala, Simo, Kiviranta, Panu and Jurvelin, Jukka (2010). 2-D finite difference time domain model of ultrasound reflection from normal and osteoarthritic human articular cartilage surface. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 57 (4) 5442883, 892-899. doi: 10.1109/TUFFC.2010.1493

2-D finite difference time domain model of ultrasound reflection from normal and osteoarthritic human articular cartilage surface

2010

Journal Article

Numerical Analysis of Uncertainties in Dual Frequency Bone Ultrasound Technique

Malo, Markus K.H., Karjalainen, Janne P., Isaksson, Hanna, Riekkinen, Ossi, Jurvelin, Jukka S. and Töyräs, Juha (2010). Numerical Analysis of Uncertainties in Dual Frequency Bone Ultrasound Technique. Ultrasound in Medicine and Biology, 36 (2), 288-294. doi: 10.1016/j.ultrasmedbio.2009.10.008

Numerical Analysis of Uncertainties in Dual Frequency Bone Ultrasound Technique

2010

Conference Publication

Repair of osteochondral defects with recombinant human type II collagen gel and autologous chondrocytes in a rabbit model

Pulkkinen, H., Tiitu, V., Valonen, P., Silvast, T. S., Jurvelin, J. S., Töyräs, J., Kiviranta, I. and Lammi, M. J. (2010). Repair of osteochondral defects with recombinant human type II collagen gel and autologous chondrocytes in a rabbit model. AO Research Institute Davos.

Repair of osteochondral defects with recombinant human type II collagen gel and autologous chondrocytes in a rabbit model

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

Enquiries

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