
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
2013
Conference Publication
Novel screen printed electrode set for routine EEG recordings in patients with altered mental status
Myllymaa, Sami, Lepola, Pasi, Hukkanen, Taina, Oun, Andre, Mervaala, Esa, Toyras, Juha, Lappalainen, Reijo and Myllymaa, Katja (2013). Novel screen printed electrode set for routine EEG recordings in patients with altered mental status. 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2013, Osaka, Japan, 3-7 July 2013. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/EMBC.2013.6611099
2012
Journal Article
Total duration of apnea and hypopnea events and average desaturation show significant variation in patients with a similar apneahypopnea index
Muraja-Murro, A., Nurkkala, J., Tiihonen, P., Hukkanen, T., Tuomilehto, H., Kokkarinen, J., Mervaala, E. and Töyräs, J. (2012). Total duration of apnea and hypopnea events and average desaturation show significant variation in patients with a similar apneahypopnea index. Journal of Medical Engineering and Technology, 36 (8), 393-398. doi: 10.3109/03091902.2012.712201
2012
Journal Article
Delayed computed tomography arthrography of human knee cartilage in vivo
Kokkonen, Harri T., Aula, Antti S., Kröger, Heikki, Suomalainen, Juha-Sampo, Lammentausta, Eveliina, Mervaala, Esa, Jurvelin, Jukka S. and Töyräs, Juha (2012). Delayed computed tomography arthrography of human knee cartilage in vivo. Cartilage, 3 (4), 334-341. doi: 10.1177/1947603512447300
2012
Journal Article
Nondestructive fluorescence-based quantification of threose-induced collagen cross-linking in bovine articular cartilage
Kinnunen, Jussi, Kokkonen, Harri T., Kovanen, Vuokko, Hauta-Kasari, Markku, Vahimaa, Pasi, Lammi, Mikko J., Töyräs, Juha and Jurvelin, Jukka S. (2012). Nondestructive fluorescence-based quantification of threose-induced collagen cross-linking in bovine articular cartilage. Journal of Biomedical Optics, 17 (9) 097003. doi: 10.1117/1.JBO.17.9.097003
2012
Journal Article
Contrast-Enhanced Micro-Computed Tomography in Evaluation of Spontaneous Repair of Equine Cartilage
Kulmala, Katariina A.M., Pulkkinen, H. J., Rieppo, L., Tiitu, V., Kiviranta, I., Brünott, A., Brommer, H., van Weeren, R., Brama, P. A.J., Mikkola, M. T., Korhonen, R. K., Jurvelin, J. S. and Töyräs, J. (2012). Contrast-Enhanced Micro-Computed Tomography in Evaluation of Spontaneous Repair of Equine Cartilage. Cartilage, 3 (3), 235-244. doi: 10.1177/1947603511424173
2012
Journal Article
Ultrasonic evaluation of acute impact injury of articular cartilage in vitro
Virén, T., Timonen, M., Tyrväinen, H., Tiitu, V., Jurvelin, J. S. and Töyräs, J. (2012). Ultrasonic evaluation of acute impact injury of articular cartilage in vitro. Osteoarthritis and Cartilage, 20 (7), 719-726. doi: 10.1016/j.joca.2012.03.018
2012
Journal Article
Multi-site bone ultrasound measurements in elderly women with and without previous hip fractures
Karjalainen, J. P., Riekkinen, O., Töyräs, J., Hakulinen, M., Kröger, H., Rikkonen, T., Salovaara, K. and Jurvelin, J. S. (2012). Multi-site bone ultrasound measurements in elderly women with and without previous hip fractures. Osteoporosis International, 23 (4), 1287-1295. doi: 10.1007/s00198-011-1682-2
2012
Journal Article
Comparison of ultrasound and optical coherence tomography techniques for evaluation of integrity of spontaneously repaired horse cartilage
Virén, T., Huang, Y. P., Saarakkala, S., Pulkkinen, H., Tiitu, V., Linjama, A., Kiviranta, I., Lammi, M. J., Brnott, A., Brommer, H., Van Weeren, R., Brama, P. A.J., Zheng, Y. P., Jurvelin, J. S. and Töyrs, J. (2012). Comparison of ultrasound and optical coherence tomography techniques for evaluation of integrity of spontaneously repaired horse cartilage. Journal of Medical Engineering and Technology, 36 (3), 185-192. doi: 10.3109/03091902.2012.663054
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
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
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
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
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
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
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
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
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
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
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
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
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
-
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
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
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Obstructive sleep apnoea pathophysiology phenotypes: associations with sleepiness and vigilance
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
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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