
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
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
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
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
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
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
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.
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.
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.
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
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
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
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
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
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
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
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
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.
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.
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.
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
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
-
Doctor Philosophy
Obstructive sleep apnoea pathophysiology phenotypes: associations with sleepiness and vigilance
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
-
Doctor Philosophy
Deep Learning Methods Towards Reliable and Physiology-Aligned Sleep Scoring
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Understanding the Interaction of light with biological tissues: a computational modelling approach
Associate Advisor
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Dr Peter Worthy, Professor Nadeeka Dissanayaka
Completed supervision
-
2025
Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
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2024
Doctor Philosophy
Integrating Wearable Devices into the Patient-Centred Digital Healthcare Environment
Associate Advisor
Other advisors: Associate Professor Chelsea Dobbins
Media
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