
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
2021
Journal Article
Raman spectroscopy is sensitive to biochemical changes related to various cartilage injuries
Shaikh, Rubina, Nippolainen, Ervin, Virtanen, Vesa, Torniainen, Jari, Rieppo, Lassi, Saarakkala, Simo, Afara, Isaac O. and Töyräs, Juha (2021). Raman spectroscopy is sensitive to biochemical changes related to various cartilage injuries. Journal of Raman Spectroscopy, 52 (4) jrs.6062, 796-804. doi: 10.1002/jrs.6062
2021
Journal Article
Automatic respiratory event scoring in obstructive sleep apnea using a long short-term memory neural network
Nikkonen, Sami, Korkalainen, Henri, Leino, Akseli, Myllymaa, Sami, Duce, Brett, Leppanen, Timo and Toyras, Juha (2021). Automatic respiratory event scoring in obstructive sleep apnea using a long short-term memory neural network. IEEE Journal of Biomedical and Health Informatics, 25 (8) 9373894, 2917-2927. doi: 10.1109/JBHI.2021.3064694
2021
Journal Article
Infrared fiber-optic spectroscopy detects bovine articular cartilage degeneration
Virtanen, Vesa, Nippolainen, Ervin, Shaikh, Rubina, Afara, Isaac O., Töyräs, Juha, Solheim, Johanne, Tafintseva, Valeria, Zimmermann, Boris, Kohler, Achim, Saarakkala, Simo and Rieppo, Lassi (2021). Infrared fiber-optic spectroscopy detects bovine articular cartilage degeneration. Cartilage, 13 (2_suppl), 1-10. doi: 10.1177/1947603521993221
2021
Journal Article
Corrigendum to "Power spectral densities of nocturnal pulse oximetry signals differ in OSA patients with and without daytime sleepiness" [Sleep Med 73 (2020) 231-237]
Kainulainen, Samu, Töyräs, Juha, Oksenberg, Arie, Korkalainen, Henri, Afara, Isaac O, Leino, Akseli, Kalevo, Laura, Nikkonen, Sami, Gadoth, Natan, Kulkas, Antti, Myllymaa, Sami and Leppänen, Timo (2021). Corrigendum to "Power spectral densities of nocturnal pulse oximetry signals differ in OSA patients with and without daytime sleepiness" [Sleep Med 73 (2020) 231-237]. Sleep medicine, 78, 202. doi: 10.1016/j.sleep.2020.11.006
2021
Journal Article
Characterization of connective tissues using near-infrared spectroscopy and imaging
Afara, Isaac O., Shaikh, Rubina, Nippolainen, Ervin, Querido, William, Torniainen, Jari, Sarin, Jaakko K., Kandel, Shital, Pleshko, Nancy and Töyräs, Juha (2021). Characterization of connective tissues using near-infrared spectroscopy and imaging. Nature Protocols, 16 (2), 1297-1329. doi: 10.1038/s41596-020-00468-z
2021
Journal Article
Discrete element and finite element methods provide similar estimations for hip joint contact mechanics during walking gait
Li, Mao, Venäläinen, Mikko S., Chandra, Shekhar S., Patel, Rushabh, Fripp, Jurgen, Engstrom, Craig, Korhonen, Rami K., Töyräs, Juha and Crozier, Stuart (2021). Discrete element and finite element methods provide similar estimations for hip joint contact mechanics during walking gait. Journal of Biomechanics, 115 110163, 1-11. doi: 10.1016/j.jbiomech.2020.110163
2021
Journal Article
Dual-contrast computed tomography enables detection of equine posttraumatic osteoarthritis in vitro
Saukko, Annina E. A., Sarin, Jaakko K., Nykänen, Olli, Nissi, Mikko J., te Moller, Nikae C. R., Weinans, Harrie, Mancini, Irina A. D., Visser, Jetze, Brommer, Harold, van Weeren, P. Réné, Malda, Jos, Grinstaff, Mark W. and Töyräs, Juha (2021). Dual-contrast computed tomography enables detection of equine posttraumatic osteoarthritis in vitro. Journal of Orthopaedic Research, 40 (3) jor.25066, 703-711. doi: 10.1002/jor.25066
2021
Journal Article
Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon
Ristaniemi, Aapo, Regmi, Dristi, Mondal, Diponkor, Torniainen, Jari, Tanska, Petri, Stenroth, Lauri, Finnilä, Mikko A. J., Töyräs, Juha and Korhonen, Rami K. (2021). Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon. Journal of the Royal Society. Interface, 18 (174) 20200737, 1-11. doi: 10.1098/rsif.2020.0737
2021
Journal Article
Structural, compositional, and functional effects of blunt and sharp cartilage damage on the joint: A 9-month equine groove model study
Te Moller, Nikae C R, Mohammadi, Ali, Plomp, Saskia, Serra Bragança, Filipe M, Beukers, Martijn, Pouran, Behdad, Afara, Isaac O, Nippolainen, Ervin, Mäkelä, Janne T A, Korhonen, Rami K, Töyräs, Juha, Brommer, Harold and van Weeren, P René (2021). Structural, compositional, and functional effects of blunt and sharp cartilage damage on the joint: A 9-month equine groove model study. Journal of Orthopaedic Research, 39 (11) jor.24971, 1-13. doi: 10.1002/jor.24971
2020
Journal Article
Neural network analysis of nocturnal SpO2 signal enables easy screening of sleep apnea in patients with acute cerebrovascular disease
Leino, Akseli, Nikkonen, Sami, Kainulainen, Samu, Korkalainen, Henri, Töyräs, Juha, Myllymaa, Sami, Leppänen, Timo, Ylä-Herttuala, Salla, Westeren-Punnonen, Susanna, Muraja-Murro, Anu, Jäkälä, Pekka, Mervaala, Esa and Myllymaa, Katja (2020). Neural network analysis of nocturnal SpO2 signal enables easy screening of sleep apnea in patients with acute cerebrovascular disease. Sleep Medicine, 79, 71-78. doi: 10.1016/j.sleep.2020.12.032
2020
Journal Article
Machine learning augmented near-infrared spectroscopy: in vivo follow-up of cartilage defects
Sarin, J. K., Te Moller, N. C. R., Mohammadi, A., Prakash, M., Torniainen, J., Brommer, H., Nippolainen, E., Shaikh, R., Mäkelä, J. T. A., Korhonen, R. K., van Weeren, P. R., Afara, I. O. and Töyräs, J. (2020). Machine learning augmented near-infrared spectroscopy: in vivo follow-up of cartilage defects. Osteoarthritis and Cartilage, 29 (3), 423-432. doi: 10.1016/j.joca.2020.12.007
2020
Journal Article
Detailed assessment of sleep architecture with deep learning and shorter epoch-to-epoch duration reveals sleep fragmentation of patients with obstructive sleep apnea
Korkalainen, Henri, Leppanen, Timo, Duce, Brett, Kainulainen, Samu, Aakko, Juhani, Leino, Akseli, Kalevo, Laura, Afara, Isaac O, Myllymaa, Sami and Toyras, Juha (2020). Detailed assessment of sleep architecture with deep learning and shorter epoch-to-epoch duration reveals sleep fragmentation of patients with obstructive sleep apnea. IEEE Journal of Biomedical and Health Informatics, PP (7) 9288902, 1-8. doi: 10.1109/JBHI.2020.3043507
2020
Journal Article
Longer apneas and hypopneas are associated with greater ultra-short-term HRV in obstructive sleep apnea
Hietakoste, Salla, Korkalainen, Henri, Kainulainen, Samu, Sillanmäki, Saara, Nikkonen, Sami, Myllymaa, Sami, Duce, Brett, Töyräs, Juha and Leppänen, Timo (2020). Longer apneas and hypopneas are associated with greater ultra-short-term HRV in obstructive sleep apnea. Scientific Reports, 10 (1) 21556, 21556. doi: 10.1038/s41598-020-77780-x
2020
Journal Article
Rapid CT-based estimation of articular cartilage biomechanics in the knee joint without cartilage segmentation
Mohammadi, Ali, Myller, Katariina A. H., Tanska, Petri, Hirvasniemi, Jukka, Saarakkala, Simo, Töyräs, Juha, Korhonen, Rami K. and Mononen, Mika E. (2020). Rapid CT-based estimation of articular cartilage biomechanics in the knee joint without cartilage segmentation. Annals of Biomedical Engineering, 48 (12), 2965-2975. doi: 10.1007/s10439-020-02666-y
2020
Journal Article
Tissue optical properties combined with machine learning enables estimation of articular cartilage composition and functional integrity
Kafian-Attari, Iman, Nippolainen, Ervin, Semenov, Dmitry, Hauta-Kasari, Markku, Töyräs, Juha and Afara, Isaac O. (2020). Tissue optical properties combined with machine learning enables estimation of articular cartilage composition and functional integrity. Biomedical Optics Express, 11 (11), 6480-6494. doi: 10.1364/BOE.402929
2020
Journal Article
Tailored synthesis of PEGylated bismuth nanoparticles for x-ray computed tomography and photothermal therapy: one-pot, targeted pyrolysis, and self-promotion
Xu, Wujun, Cui, Pang, Happonen, Emilia, Leppänen, Jukka, Liu, Lizhi, Rantanen, Jimi, Majda, Dorota, Saukko, Annina, Thapa, Rinez, Nissinen, Tuomo, Tynkkynen, Tuulia, Töyräs, Juha, Fan, Li, Liu, Wenchao and Lehto, Vesa-Pekka (2020). Tailored synthesis of PEGylated bismuth nanoparticles for x-ray computed tomography and photothermal therapy: one-pot, targeted pyrolysis, and self-promotion. ACS Applied Materials and Interfaces, 12 (42), 47233-47244. doi: 10.1021/acsami.0c12499
2020
Journal Article
Increased nocturnal arterial pulsation frequencies of obstructive sleep apnoea patients is associated with an increased number of lapses in a psychomotor vigilance task
Kainulainen, Samu, Duce, Brett, Korkalainen, Henri, Leino, Akseli, Huttunen, Riku, Kalevo, Laura, Arnardottir, Erna S, Kulkas, Antti, Myllymaa, Sami, Töyräs, Juha and Leppänen, Timo (2020). Increased nocturnal arterial pulsation frequencies of obstructive sleep apnoea patients is associated with an increased number of lapses in a psychomotor vigilance task. ERJ Open Research, 6 (4) 00277-2020, 1-13. doi: 10.1183/23120541.00277-2020
2020
Journal Article
Power spectral densities of nocturnal pulse oximetry signals differ in OSA patients with and without daytime sleepiness
Kainulainen, Samu, Töyräs, Juha, Oksenberg, Arie, Korkalainen, Henri, Afara, Isaac O., Leino, Akseli, Kalevo, Laura, Nikkonen, Sami, Gadoth, Natan, Kulkas, Antti, Myllymaa, Sami and Leppänen, Timo (2020). Power spectral densities of nocturnal pulse oximetry signals differ in OSA patients with and without daytime sleepiness. Sleep Medicine, 73, 231-237. doi: 10.1016/j.sleep.2020.07.015
2020
Journal Article
Effects of human articular cartilage constituents on simultaneous diffusion of cationic and nonionic contrast agents
Bhattarai, Abhisek, Mäkelä, Janne T. A., Pouran, Behdad, Kröger, Heikki, Weinans, Harrie, Grinstaff, Mark W., Töyräs, Juha and Turunen, Mikael J. (2020). Effects of human articular cartilage constituents on simultaneous diffusion of cationic and nonionic contrast agents. Journal of Orthopaedic Research, 39 (4) jor.24824, 771-779. doi: 10.1002/jor.24824
2020
Journal Article
Quantification of myocardial blood flow by machine learning analysis of modified dual bolus MRI examination
Husso, Minna, Afara, Isaac O., 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 Töyräs, Juha (2020). Quantification of myocardial blood flow by machine learning analysis of modified dual bolus MRI examination. Annals of Biomedical Engineering, 49 (2), 653-662. doi: 10.1007/s10439-020-02591-0
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
-
Doctor Philosophy
Artificial intelligence and mechanistic physiology approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Dwayne Mann, 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
Integrating Wearable Devices into the Patient-Centred Digital Healthcare Environment
Associate Advisor
Other advisors: Associate Professor Chelsea Dobbins
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Professor Gerard Byrne, Dr Peter Worthy, Professor Nadeeka Dissanayaka
-
Doctor Philosophy
New deep learning based methods for assessment of sleep apnea severity and risk of related short and long term health consequences
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
New deep learning based methods for assessment of sleep apnea severity and risk of related short and long term health consequences
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Artificial intelligence and mechanistic physiology approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Dwayne Mann, 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
-
Doctor Philosophy
Adaptation of Raman spectroscopy for diagnostic assessment of connective tissue integrity
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
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Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
Completed supervision
-
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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