
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
2019
Journal Article
Severity of desaturations reflects OSA-related daytime sleepiness better than AHI
Kainulainen, Samu, Töyräs, Juha, Oksenberg, Arie, Korkalainen, Henri, Sefa, Sandra, Kulkas, Antti and Leppänen, Timo (2019). Severity of desaturations reflects OSA-related daytime sleepiness better than AHI. Journal of Clinical Sleep Medicine, 15 (8), 1135-1142. doi: 10.5664/jcsm.7806
2019
Journal Article
Polysomnographic scoring of sleep bruxism events is accurate even in the absence of video recording but unreliable with EMG-only setups
Miettinen, Tomi, Myllymaa, Katja, Muraja-Murro, Anu, Westeren-Punnonen, Susanna, Hukkanen, Taina, Töyräs, Juha, Lappalainen, Reijo, Mervaala, Esa, Sipilä, Kirsi and Myllymaa, Sami (2019). Polysomnographic scoring of sleep bruxism events is accurate even in the absence of video recording but unreliable with EMG-only setups. Sleep and Breathing, 24 (3), 893-904. doi: 10.1007/s11325-019-01915-2
2019
Journal Article
Identification of locations susceptible to osteoarthritis in patients with anterior cruciate ligament reconstruction: Combining knee joint computational modelling with follow-up T1ρ and T2 imaging
Bolcos, Paul O., Mononen, Mika E., Tanaka, Matthew S., Yang, Mingrui, Suomalainen, Juha-Sampo, Nissi, Mikko J., Töyräs, Juha, Ma, Benjamin, Li, Xiaojuan and Korhonen, Rami K. (2019). Identification of locations susceptible to osteoarthritis in patients with anterior cruciate ligament reconstruction: Combining knee joint computational modelling with follow-up T1ρ and T2 imaging. Clinical Biomechanics, 79 104844, 104844. doi: 10.1016/j.clinbiomech.2019.08.004
2019
Journal Article
Near-infrared spectroscopy enables quantitative evaluation of human cartilage biomechanical properties during arthroscopy
Prakash, M., Joukainen, A., Torniainen, J., Honkanen, M. K.M., Rieppo, L., Afara, I. O., Kröger, H., Töyräs, J. and Sarin, J. K. (2019). Near-infrared spectroscopy enables quantitative evaluation of human cartilage biomechanical properties during arthroscopy. Osteoarthritis and Cartilage, 27 (8), 1235-1243. doi: 10.1016/j.joca.2019.04.008
2019
Journal Article
Arthroscopic determination of cartilage proteoglycan content and collagen network structure with near-infrared spectroscopy
Sarin, Jaakko K., Nykänen, Olli, Tiitu, Virpi, Mancini, Irina A. D., Brommer, Harold, Visser, Jetze, Malda, Jos, van Weeren, P. René, Afara, Isaac O. and Töyräs, Juha (2019). Arthroscopic determination of cartilage proteoglycan content and collagen network structure with near-infrared spectroscopy. Annals of Biomedical Engineering, 47 (8), 1815-1826. doi: 10.1007/s10439-019-02280-7
2019
Journal Article
Quantification of porcine myocardial perfusion with modified dual bolus MRI - a prospective study with a PET reference
Husso, Minna, Nissi, Mikko J., Kuivanen, Antti, Halonen, Paavo, Tarkia, Miikka, Teuho, Jarmo, Saunavaara, Virva, Vainio, Pauli, Sipola, Petri, Manninen, Hannu, Ylä-Herttuala, Seppo, Knuuti, Juhani and Toÿräs, Juha (2019). Quantification of porcine myocardial perfusion with modified dual bolus MRI - a prospective study with a PET reference. BMC Medical Imaging, 19 (1) 58, 58. doi: 10.1186/s12880-019-0359-8
2019
Journal Article
Prevalence and characteristics of positional obstructive sleep apnea (POSA) in patients with severe OSA
Oksenberg, Arie, Gadoth, Natan, Töyräs, Juha and Leppänen, Timo (2019). Prevalence and characteristics of positional obstructive sleep apnea (POSA) in patients with severe OSA. Sleep and Breathing, 24 (2), 551-559. doi: 10.1007/s11325-019-01897-1
2019
Journal Article
Intra-night variation in apnea-hypopnea index affects diagnostics and prognostics of obstructive sleep apnea
Nikkonen, Sami, Töyräs, Juha, Mervaala, Esa, Myllymaa, Sami, Terrill, Philip and Leppänen, Timo (2019). Intra-night variation in apnea-hypopnea index affects diagnostics and prognostics of obstructive sleep apnea. Sleep and Breathing, 24 (1), 379-386. doi: 10.1007/s11325-019-01885-5
2019
Journal Article
T2* and quantitative susceptibility mapping in an equine model of post-traumatic osteoarthritis: assessment of mechanical and structural properties of articular cartilage
Nykänen, O., Sarin, J. K., Ketola, J. H., Leskinen, H., te Moller, N. C.R., Tiitu, V., Mancini, I. A.D., Visser, J., Brommer, H., van Weeren, P. R., Malda, J., Töyräs, J. and Nissi, M. J. (2019). T2* and quantitative susceptibility mapping in an equine model of post-traumatic osteoarthritis: assessment of mechanical and structural properties of articular cartilage. Osteoarthritis and Cartilage, 27 (10), 1481-1490. doi: 10.1016/j.joca.2019.06.009
2019
Journal Article
Simultaneous quantitation of cationic and non-ionic contrast agents in articular cartilage using synchrotron MicroCT imaging
Saukko, Annina E. A., Turunen, Mikael J., Honkanen, Miitu K. M., Lovric, Goran, Tiitu, Virpi, Honkanen, Juuso T. J., Grinstaff, Mark W., Jurvelin, Jukka S. and Töyräs, Juha (2019). Simultaneous quantitation of cationic and non-ionic contrast agents in articular cartilage using synchrotron MicroCT imaging. Scientific Reports, 9 (1) 7118, 7118. doi: 10.1038/s41598-019-43276-6
2019
Journal Article
The hypoxic burden: also known as the desaturation severity parameter
Leppänen, Timo, Kulkas, Antti and Töyräs, Juha (2019). The hypoxic burden: also known as the desaturation severity parameter. European Heart Journal, 40 (35), 2991-2993. doi: 10.1093/eurheartj/ehz271
2019
Journal Article
Computational evaluation of altered biomechanics related to articular cartilage lesions observed in vivo
Myller, Katariina A. H., Korhonen, Rami K., Töyräs, Juha, Salo, Jari, Jurvelin, Jukka S. and Venäläinen, Mikko S. (2019). Computational evaluation of altered biomechanics related to articular cartilage lesions observed in vivo. Journal of Orthopaedic Research, 37 (5) jor.24273, 1042-1051. doi: 10.1002/jor.24273
2019
Journal Article
Imaging of proteoglycan and water contents in human articular cartilage with full-body CT using dual contrast technique
Honkanen, Miitu K. M., Matikka, Hanna, Honkanen, Juuso T. J., Bhattarai, Abhisek, Grinstaff, Mark W., Joukainen, Antti, Kröger, Heikki, Jurvelin, Jukka S. and Töyräs, Juha (2019). Imaging of proteoglycan and water contents in human articular cartilage with full-body CT using dual contrast technique. Journal of Orthopaedic Research, 37 (5) jor.24256, 1059-1070. doi: 10.1002/jor.24256
2019
Conference Publication
Arthroscopic near-infrared spectroscopic prediction of human meniscus properties
Ala-Myllymäki, Juho, Paakkonen, Tommi, Töyräsa, Juha and Afara, Isaac O. (2019). Arthroscopic near-infrared spectroscopic prediction of human meniscus properties. Bio-Optics: Design and Application 2019, Tucson, AZ, United States, 14–17 April 2019. Washington, D.C.: Optical Society of America (OSA). doi: 10.1364/BODA.2019.JT4A.35
2019
Journal Article
Publisher Correction: Quantitative evaluation of the mechanical risks caused by focal cartilage defects in the knee (Scientific Reports, (2016), 6, 1, (37538), 10.1038/srep37538)
Venäläinen, Mikko S., Mononen, Mika E., Salo, Jari, Räsänen, Lasse P., Jurvelin, Jukka S., Töyräs, Juha, Virén, Tuomas and Korhonen, Rami K. (2019). Publisher Correction: Quantitative evaluation of the mechanical risks caused by focal cartilage defects in the knee (Scientific Reports, (2016), 6, 1, (37538), 10.1038/srep37538). Scientific Reports, 9 (1) 5660, 5660. doi: 10.1038/s41598-019-41384-x
2019
Conference Publication
Detection of enzymatically and mechanically induced degradation of bovine articular cartilage tissue with mid-infrared spectroscopy
Virtanen, V. K., Nippolainen, E., Shaikh, R., Afara, I., Toyras, J., Saarakkala, S. and Rieppo, L. (2019). Detection of enzymatically and mechanically induced degradation of bovine articular cartilage tissue with mid-infrared spectroscopy. OARSI World Congress on Osteoarthritis - Promoting Clinical and Basic Research in Osteoarthritis, Toronto, Canada, 2-5 May 2019. Oxford, United Kingdom: Elsevier . doi: 10.1016/j.joca.2019.02.035
2019
Conference Publication
Mid-infrared and near infrared spectroscopic analysis of mechanically and enzymatically damaged cartilage
Nippolainen, Ervin, Shaikh, Rubina, Virtanen, Vesa, Rieppo, Lassi, Afara, Isaac, Saarakkala, Simo and Töyräs, Juha (2019). Mid-infrared and near infrared spectroscopic analysis of mechanically and enzymatically damaged cartilage. Biophotonics Congress: Optics in the Life Sciences Congress 2019 (BODA,BRAIN,NTM,OMA,OMP), Tucson, AZ USA, 14-17 April 2019. Washington, DC USA: Optical Society of America. doi: 10.1364/BODA.2019.JT4A.37
2019
Journal Article
Increase in body mass index decreases duration of apneas and hypopneas in obstructive sleep apnea
Leppänen, Timo, Kulkas, Antti, Mervaala, Esa and Töyräs, Juha (2019). Increase in body mass index decreases duration of apneas and hypopneas in obstructive sleep apnea. Respiratory Care, 64 (1), 77-84. doi: 10.4187/respcare.06297
2019
Journal Article
Near infrared spectroscopic evaluation of ligament and tendon biomechanical properties
Torniainen, Jari, Ristaniemi, Aapo, Sarin, Jaakko K., Mikkonen, Santtu, Afara, Isaac O., Stenroth, Lauri, Korhonen, Rami K. and Töyräs, Juha (2019). Near infrared spectroscopic evaluation of ligament and tendon biomechanical properties. Annals of Biomedical Engineering, 47 (1), 213-222. doi: 10.1007/s10439-018-02125-9
2019
Conference Publication
Automated preprocessing of near infrared spectroscopic data
Torniainen, Jari, Afara, Isaac O., Prakash, Mithilesh, Sarin, Jaakko K., Stenroth, Lauri and Töyräs, Juha (2019). Automated preprocessing of near infrared spectroscopic data. Biophotonics Congress: Optics in the Life Sciences Congress 2019 (BODA,BRAIN,NTM,OMA,OMP), Tucson, AZ, United States, 14-17 April 2019. Washington, DC, United States: Optical Society of America. doi: 10.1364/BODA.2019.DS2A.6
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
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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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