
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
2004
Journal Article
Ultrasonic quantitation of superficial degradation of articular cartilage
Saarakkala, Simo, Töyräs, Juha, Hirvonen, Jani, Laasanen, Mikko S., Lappalainen, Reijo and Jurvelin, Jukka S. (2004). Ultrasonic quantitation of superficial degradation of articular cartilage. Ultrasound in Medicine and Biology, 30 (6), 783-792. doi: 10.1016/j.ultrasmedbio.2004.03.005
2004
Journal Article
Proteoglycan and collagen sensitive MRI evaluation of normal and degenerated articular cartilage
Nissi, M. J., Töyräs, J., Laasanen, M. S., Rieppo, J., Saarakkala, S., Lappalainen, R., Jurvelin, J. S. and Nieminen, M. T. (2004). Proteoglycan and collagen sensitive MRI evaluation of normal and degenerated articular cartilage. Journal of Orthopaedic Research, 22 (3), 557-564. doi: 10.1016/j.orthres.2003.09.008
2004
Journal Article
Ultrasound attenuation in normal and spontaneously degenerated articular cartilage
Nieminen, Heikki J., Saarakkala, Simo, Laasanen, Mikko S., Hirvonen, Jani, Jurvelin, Jukka S. and Töyräs, Juha (2004). Ultrasound attenuation in normal and spontaneously degenerated articular cartilage. Ultrasound in Medicine and Biology, 30 (4), 493-500. doi: 10.1016/j.ultrasmedbio.2003.12.007
2004
Journal Article
Prediction of biomechanical properties of articular cartilage with quantitative magnetic resonance imaging
Nieminen, Miika T., Töyräs, Juha, Laasanen, Mikko S., Silvennoinen, Johanna, Helminen, Heikki J. and Jurvelin, Jukka S. (2004). Prediction of biomechanical properties of articular cartilage with quantitative magnetic resonance imaging. Journal of Biomechanics, 37 (3), 321-328. doi: 10.1016/S0021-9290(03)00291-4
2003
Journal Article
Structure-function relationships in enzymatically modified articular cartilage
Rieppo, Jarno, Töyräs, Juha, Nieminen, Miika T., Kovanen, Vuokko, Hyttinen, Mika M., Korhonen, Rami K., Jurvelin, Jukka S. and Helminen, Heikki J. (2003). Structure-function relationships in enzymatically modified articular cartilage. Cells Tissues Organs, 175 (3), 121-132. doi: 10.1159/000074628
2003
Journal Article
Fibril reinforced poroelastic model predicts specifically mechanical behavior of normal, proteoglycan depleted and collagen degraded articular cartilage
Korhonen, Rami K., Laasanen, Mikko S., Töyräs, Juha, Lappalainen, Reijo, Helminen, Heikki J. and Jurvelin, Jukka S. (2003). Fibril reinforced poroelastic model predicts specifically mechanical behavior of normal, proteoglycan depleted and collagen degraded articular cartilage. Journal of Biomechanics, 36 (9), 1373-1379. doi: 10.1016/S0021-9290(03)00069-1
2003
Journal Article
Ultrasound indentation of bovine knee articular cartilage in situ
Laasanen, Mikko S., Saarakkala, Simo, Töyräs, Juha, Hirvonen, Jani, Rieppo, Jarno, Korhonen, Rami K. and Jurvelin, Jukka S. (2003). Ultrasound indentation of bovine knee articular cartilage in situ. Journal of Biomechanics, 36 (9), 1259-1267. doi: 10.1016/S0021-9290(03)00163-5
2003
Journal Article
Ultrasound indentation of normal and spontaneously degenerated bovine articular cartilage
Saarakkala, S., Laasanen, M. S., Jurvelin, J. S., Törrönen, K., Lammi, M. J., Lappalainen, R. and Töyräs, J. (2003). Ultrasound indentation of normal and spontaneously degenerated bovine articular cartilage. Osteoarthritis and Cartilage, 11 (9), 697-705. doi: 10.1016/S1063-4584(03)00154-7
2003
Journal Article
Dual energy x-ray laser measurement of calcaneal bone mineral density
Hakulinen, M. A., Saarakkala, S., Töyräs, J., Kröger, H. and Jurvelin, J. S. (2003). Dual energy x-ray laser measurement of calcaneal bone mineral density. Physics in Medicine and Biology, 48 (12), 1741-1752. doi: 10.1088/0031-9155/48/12/305
2003
Journal Article
Experimental and numerical validation for the novel configuration of an arthroscopic indentation instrument
Korhonen, Rami K., Saarakkala, Simo, Töyräs, Juha, Laasanen, Mikko S., Kiviranta, Ilkka and Jurvelin, Jukka S. (2003). Experimental and numerical validation for the novel configuration of an arthroscopic indentation instrument. Physics in Medicine and Biology, 48 (11), 1565-1576. doi: 10.1088/0031-9155/48/11/306
2003
Journal Article
Electrical and dielectric properties of bovine trabecular bone - Relationships with mechanical properties and mineral density
Sierpowska, Joanna, Töyräs, J., Hakulinen, M. A., Saarakkala, S., Jurvelin, J. S. and Lappalainen, R. (2003). Electrical and dielectric properties of bovine trabecular bone - Relationships with mechanical properties and mineral density. Physics in Medicine and Biology, 48 (6), 775-786. doi: 10.1088/0031-9155/48/6/306
2003
Journal Article
Speed of sound in normal and degenerated bovine articular cartilage
Töyräs, Juha, Laasanen, Mikko S., Saarakkala, Simo, Lammi, Mikko J., Rieppo, Jarno, Kurkijärvi, Jatta, Lappalainen, Reijo and Jurvelin, Jukka S. (2003). Speed of sound in normal and degenerated bovine articular cartilage. Ultrasound in Medicine and Biology, 29 (3), 447-454. doi: 10.1016/S0301-5629(02)00708-1
2003
Conference Publication
Mechano-acoustic diagnostic of cartilage degeneration and repair
Laasanen, Mikko S., Töyräs, Juha, Vasara, Anna I., Hyttinen, Mika M., Saarakkala, Simo, Hirvonen, Jani, Jurvelin, Jukka S. and Kiviranta, Ilkka (2003). Mechano-acoustic diagnostic of cartilage degeneration and repair. Journal of Bone and Joint Surgery Inc.. doi: 10.2106/00004623-200300002-00010
2002
Journal Article
Bone mineral density, ultrasound velocity, and broadband attenuation predict mechanical properties of trabecular bone differently
Töyräs, J., Nieminen, M. T., Kröger, H. and Jurvelin, J. S. (2002). Bone mineral density, ultrasound velocity, and broadband attenuation predict mechanical properties of trabecular bone differently. Bone, 31 (4), 503-507. doi: 10.1016/S8756-3282(02)00843-8
2002
Journal Article
Spatial assessment of articular cartilage proteoglycans with Gd-DTPA-enhanced T1 imaging
Nieminen, Miika T., Rieppo, Jarno, Silvennoinen, Johanna, Töyräs, Juha, Hakumäki, Juhana M., Hyttinen, Mika M., Helminen, Heikki J. and Jurvelin, Jukka S. (2002). Spatial assessment of articular cartilage proteoglycans with Gd-DTPA-enhanced T1 imaging. Magnetic Resonance in Medicine, 48 (4), 640-648. doi: 10.1002/mrm.10273
2002
Journal Article
Novel mechano-acoustic technique and instrument for diagnosis of cartilage degeneration
Laasanen, M. S., Töyräs, J., Hirvonen, J., Saarakkala, S., Korhonen, R. K., Nieminen, M. T., Kiviranta, I. and Jurvelin, J. S. (2002). Novel mechano-acoustic technique and instrument for diagnosis of cartilage degeneration. Physiological Measurement, 23 (3) 302, 491-503. doi: 10.1088/0967-3334/23/3/302
2002
Journal Article
Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation
Korhonen, R. K., Laasanen, M. S., Töyräs, J., Rieppo, J., Hirvonen, J., Helminen, H. J. and Jurvelin, J. S. (2002). Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation. Journal of Biomechanics, 35 (7), 903-909. doi: 10.1016/S0021-9290(02)00052-0
2002
Journal Article
Real-time ultrasound analysis of articular cartilage degradation in vitro
Nieminen, Heikki J., Töyräs, Juha, Rieppo, Jarno, Nieminen, Miika T., Hirvonen, Jani, Korhonen, Rami and Jurvelin, Jukka S. (2002). Real-time ultrasound analysis of articular cartilage degradation in vitro. Ultrasound in Medicine and Biology, 28 (4), 519-525. doi: 10.1016/S0301-5629(02)00480-5
2002
Conference Publication
Ultrasonic characterization of articular cartilage
Töyräs, J, Nieminen, H J, Laasanen, M S, Nieminen, M T, Korhonen, R K, Rieppo, J, Hirvonen, J, Helminen, H J and Jurvelin, J S (2002). Ultrasonic characterization of articular cartilage.
2001
Journal Article
T2 relaxation reveals spatial collagen architecture in articular cartilage: A comparative quantitative MRI and polarized light microscopic study
Nieminen, Miika T., Rieppo, Jarno, Töyräs, Juha, Hakumäki, Juhana M., Silvennoinen, Johanna, Hyttinen, Mika M., Helminen, Heikki J. and Jurvelin, Jukka S. (2001). T2 relaxation reveals spatial collagen architecture in articular cartilage: A comparative quantitative MRI and polarized light microscopic study. Magnetic Resonance in Medicine, 46 (3), 487-493. doi: 10.1002/mrm.1218
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Associate Professor Philip Terrill
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Dr Peter Worthy, Professor Nadeeka Dissanayaka
-
Doctor Philosophy
Understanding the Interaction of light with biological tissues: a computational modelling approach
Associate Advisor
-
Doctor Philosophy
Deep Learning Methods Towards Reliable and Physiology-Aligned Sleep Scoring
Associate Advisor
Other advisors: Associate Professor Philip Terrill
Completed supervision
-
2025
Doctor Philosophy
Obstructive sleep apnoea pathophysiology phenotypes: associations with sleepiness and vigilance
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
-
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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