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Professor Juha Toyras
Professor

Juha Toyras

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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

406 works between 1999 and 2025

261 - 280 of 406 works

2015

Journal Article

Effect of different oxygen desaturation threshold levels on hypopnea scoring and classification of severity of sleep apnea

Myllymaa, Sami, Myllymaa, Katja, Kupari, Salla, Kulkas, Antti, Leppänen, Timo, Tiihonen, Pekka, Mervaala, Esa, Seppä, Juha, Tuomilehto, Henri and Töyräs, Juha (2015). Effect of different oxygen desaturation threshold levels on hypopnea scoring and classification of severity of sleep apnea. Sleep and Breathing, 19 (3), 947-954. doi: 10.1007/s11325-015-1118-x

Effect of different oxygen desaturation threshold levels on hypopnea scoring and classification of severity of sleep apnea

2015

Journal Article

Optical absorption spectra of human articular cartilage correlate with biomechanical properties, histological score and biochemical composition

Afara, Isaac O., Hauta-Kasari, Markku, Jurvelin, Jukka S., Oloyede, Adekunle and Töyräs, Juha (2015). Optical absorption spectra of human articular cartilage correlate with biomechanical properties, histological score and biochemical composition. Physiological Measurement, 36 (9) 1913, 1913-1928. doi: 10.1088/0967-3334/36/9/1913

Optical absorption spectra of human articular cartilage correlate with biomechanical properties, histological score and biochemical composition

2015

Journal Article

Forehead EEG electrode set versus full-head scalp EEG in 100 patients with altered mental state

Muraja-Murro, Anu, Mervaala, Esa, Westeren-Punnonen, Susanna, Lepola, Pasi, Töyräs, Juha, Myllymaa, Sami, Julkunen, Petro, Kantanen, Anne-Mari, Kälviäinen, Reetta and Myllymaa, Katja (2015). Forehead EEG electrode set versus full-head scalp EEG in 100 patients with altered mental state. Epilepsy and Behavior, 49, 245-249. doi: 10.1016/j.yebeh.2015.04.041

Forehead EEG electrode set versus full-head scalp EEG in 100 patients with altered mental state

2015

Journal Article

Contrast enhanced imaging of human meniscus using cone beam CT

Honkanen, J. T J, Danso, E. K., Suomalainen, J. S., Tiitu, V., Korhonen, R. K., Jurvelin, J. S. and Töyräs, J. (2015). Contrast enhanced imaging of human meniscus using cone beam CT. Osteoarthritis and Cartilage, 23 (8), 1367-1376. doi: 10.1016/j.joca.2015.03.037

Contrast enhanced imaging of human meniscus using cone beam CT

2015

Journal Article

Ultrasound backscattering is anisotropic in bovine articular cartilage

Inkinen, Satu I., Liukkonen, Jukka, Tiitu, Virpi, Virén, Tuomas, Jurvelin, Jukka S. and Töyräs, Juha (2015). Ultrasound backscattering is anisotropic in bovine articular cartilage. Ultrasound in Medicine and Biology, 41 (7), 1958-1966. doi: 10.1016/j.ultrasmedbio.2015.03.021

Ultrasound backscattering is anisotropic in bovine articular cartilage

2015

Journal Article

Characterization of site-specific biomechanical properties of human meniscus -importance of collagen and fluid on mechanical nonlinearities

Danso, E. K., Mäkelä, J. T.A., Tanska, P., Mononen, M. E., Honkanen, J. T.J., Jurvelin, J. S., Töyräs, J., Julkunen, P. and Korhonen, R. K. (2015). Characterization of site-specific biomechanical properties of human meniscus -importance of collagen and fluid on mechanical nonlinearities. Journal of Biomechanics, 48 (8), 1499-1507. doi: 10.1016/j.jbiomech.2015.01.048

Characterization of site-specific biomechanical properties of human meniscus -importance of collagen and fluid on mechanical nonlinearities

2015

Journal Article

Thermal imaging in screening of joint inflammation and rheumatoid arthritis in children

Lasanen, R, Piippo-Savolainen, E, Remes-Pakarinen, T, Kröger, L, Heikkilä, A, Julkunen, P, Karhu, J and Töyräs, J (2015). Thermal imaging in screening of joint inflammation and rheumatoid arthritis in children. Physiological measurement, 36 (2), 273-82. doi: 10.1088/0967-3334/36/2/273

Thermal imaging in screening of joint inflammation and rheumatoid arthritis in children

2015

Journal Article

Relationships between tissue composition and viscoelastic properties in human trabecular bone

Ojanen, X., Isaksson, H., Töyräs, J., Turunen, M. J., Malo, M. K H, Halvari, A. and Jurvelin, J. S. (2015). Relationships between tissue composition and viscoelastic properties in human trabecular bone. Journal of Biomechanics, 48 (2), 269-275. doi: 10.1016/j.jbiomech.2014.11.034

Relationships between tissue composition and viscoelastic properties in human trabecular bone

2015

Conference Publication

Desaturation event characteristics and mortality risk in severe sleep apnea

Kulkas, Antti, Muraja-Murro, A., Leppänen, T., Tiihonen, P., Mervaala, E. and Töyräs, J. (2015). Desaturation event characteristics and mortality risk in severe sleep apnea. World Congress on Medical Physics and Biomedical Engineering (2015), Toronto, ON, Canada, 7-12 June 2015. Cham, Switzerland: Springer. doi: 10.1007/978-3-319-19387-8_231

Desaturation event characteristics and mortality risk in severe sleep apnea

2014

Journal Article

Importance of material properties and porosity of bone on mechanical response of articular cartilage in human knee joint - a two-dimensional finite element study

Venäläinen, Mikko S., Mononen, Mika E., Jurvelin, Jukka S., Töyräs, Juha, Virén, Tuomas and Korhonen, Rami K. (2014). Importance of material properties and porosity of bone on mechanical response of articular cartilage in human knee joint - a two-dimensional finite element study. Journal of Biomechanical Engineering, 136 (12) 121005. doi: 10.1115/1.4028801

Importance of material properties and porosity of bone on mechanical response of articular cartilage in human knee joint - a two-dimensional finite element study

2014

Journal Article

Dependence of light attenuation and backscattering on collagen concentration and chondrocyte density in agarose scaffolds

Puhakka, P. H., Ylärinne, J. H., Lammi, M. J., Saarakkala, S., Tiitu, V., Kröger, H., Virén, T., Jurvelin, J. S. and Töyräs, J. (2014). Dependence of light attenuation and backscattering on collagen concentration and chondrocyte density in agarose scaffolds. Physics in Medicine and Biology, 59 (21), 6537-6548. doi: 10.1088/0031-9155/59/21/6537

Dependence of light attenuation and backscattering on collagen concentration and chondrocyte density in agarose scaffolds

2014

Journal Article

Morbidity and mortality risk ratios are elevated in severe supine dominant OSA: a long-term follow-up study

Kulkas, Antti, Muraja-Murro, Anu, Tiihonen, Pekka, Mervaala, Esa and Töyräs, Juha (2014). Morbidity and mortality risk ratios are elevated in severe supine dominant OSA: a long-term follow-up study. Sleep and Breathing, 19 (2), 653-660. doi: 10.1007/s11325-014-1071-0

Morbidity and mortality risk ratios are elevated in severe supine dominant OSA: a long-term follow-up study

2014

Journal Article

Weight loss alters severity of individual nocturnal respiratory events depending on sleeping position

Kulkas, A., Leppänen, T., Sahlman, J., Tiihonen, P., Mervaala, E., Kokkarinen, J., Randell, J., Seppä, J., Töyräs, J. and Tuomilehto, H. (2014). Weight loss alters severity of individual nocturnal respiratory events depending on sleeping position. Physiological Measurement, 35 (10) 2037, 2037-2052. doi: 10.1088/0967-3334/35/10/2037

Weight loss alters severity of individual nocturnal respiratory events depending on sleeping position

2014

Journal Article

Ultrasound arthroscopy of human knee cartilage and subchondral bone in vivo

Liukkonen, Jukka, Lehenkari, Petri, Hirvasniemi, Jukka, Joukainen, Antti, Virén, Tuomas, Saarakkala, Simo, Nieminen, Miika T., Jurvelin, Jukka S. and Töyräs, Juha (2014). Ultrasound arthroscopy of human knee cartilage and subchondral bone in vivo. Ultrasound in Medicine and Biology, 40 (9), 2039-2047. doi: 10.1016/j.ultrasmedbio.2014.04.001

Ultrasound arthroscopy of human knee cartilage and subchondral bone in vivo

2014

Journal Article

Adjustment of apnea-hypopnea index with severity of obstruction events enhances detection of sleep apnea patients with the highest risk of severe health consequences

Muraja-Murro, A., Kulkas, A., Hiltunen, M., Kupari, S., Hukkanen, T., Tiihonen, P., Mervaala, E. and Töyräs, J. (2014). Adjustment of apnea-hypopnea index with severity of obstruction events enhances detection of sleep apnea patients with the highest risk of severe health consequences. Sleep and Breathing, 18 (3), 641-647. doi: 10.1007/s11325-013-0927-z

Adjustment of apnea-hypopnea index with severity of obstruction events enhances detection of sleep apnea patients with the highest risk of severe health consequences

2014

Journal Article

Collagen and chondrocyte concentrations control ultrasound scattering in aAgarose scaffolds

Inkinen, S., Liukkonen, J., Ylärinne, J. H., Puhakka, P. H., Lammi, M. J., Virén, T., Jurvelin, J. S. and Töyräs, J. (2014). Collagen and chondrocyte concentrations control ultrasound scattering in aAgarose scaffolds. Ultrasound in Medicine and Biology, 40 (9), 2162-2171. doi: 10.1016/j.ultrasmedbio.2014.03.016

Collagen and chondrocyte concentrations control ultrasound scattering in aAgarose scaffolds

2014

Journal Article

Shielded design of screen-printed EEG electrode set reduces interference pick-up

Lepola, Pasi, Myllymaa, Sami, Töyräs, Juha, Mervaala, Esa, Lappalainen, Reijo and Myllymaa, Katja (2014). Shielded design of screen-printed EEG electrode set reduces interference pick-up. IEEE Sensors Journal, 14 (8) 6780623, 2692-2697. doi: 10.1109/JSEN.2014.2314318

Shielded design of screen-printed EEG electrode set reduces interference pick-up

2014

Journal Article

Deformation of articular cartilage during static loading of a knee joint - experimental and finite element analysis

Halonen, K. S., Mononen, M. E., Jurvelin, J. S., Töyräs, J., Salo, J. and Korhonen, R. K. (2014). Deformation of articular cartilage during static loading of a knee joint - experimental and finite element analysis. Journal of Biomechanics, 47 (10), 2467-2474. doi: 10.1016/j.jbiomech.2014.04.013

Deformation of articular cartilage during static loading of a knee joint - experimental and finite element analysis

2014

Journal Article

Ultrasound backscatter measurements of intact human proximal femurs - relationships of ultrasound parameters with tissue structure and mineral density

Malo, M. K.H., Töyräs, J., Karjalainen, J. P., Isaksson, H., Riekkinen, O. and Jurvelin, J. S. (2014). Ultrasound backscatter measurements of intact human proximal femurs - relationships of ultrasound parameters with tissue structure and mineral density. Bone, 64, 240-245. doi: 10.1016/j.bone.2014.04.014

Ultrasound backscatter measurements of intact human proximal femurs - relationships of ultrasound parameters with tissue structure and mineral density

2014

Journal Article

Screen-printed EEG electrode set for emergency use

Lepola, Pasi, Myllymaa, Sami, Töyräs, Juha, Muraja-Murro, Anu, Mervaala, Esa, Lappalainen, Reijo and Myllymaa, Katja (2014). Screen-printed EEG electrode set for emergency use. Sensors and Actuators, A: Physical, 213, 19-26. doi: 10.1016/j.sna.2014.03.029

Screen-printed EEG electrode set for emergency use

Funding

Current funding

  • 2021 - 2025
    Revolution of sleep diagnostics and personalized health care based on digital diagnostics and therapeutics with health data integration
    NHMRC European Union Collaborative Research Grants
    Open grant
  • 2021 - 2025
    Revolution of sleep diagnostics and personalized health care based on digital diagnostics and therapeutics with health data integration
    University of Reykjavik
    Open grant

Past funding

  • 2021 - 2024
    Deep learning and physiology based approach to derive and link obstructive sleep apnoea phenotypes and symptomatology
    NHMRC IDEAS Grants
    Open grant
  • 2021 - 2024
    Osteoarthritis Compass: Personalized prediction of disease onset and progression. (NHMRC Ideas Grant administered by Griffith University)
    Griffith University
    Open grant

Supervision

Availability

Professor Juha Toyras is:
Available for supervision

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Supervision history

Current supervision

Completed supervision

Media

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