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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

398 works between 1999 and 2025

241 - 260 of 398 works

2016

Journal Article

Length of individual apnea events is increased by supine position and modulated by severity of obstructive sleep apnea

Leppänen, Timo, Töyräs, Juha, Muraja-Murro, Anu, Kupari, Salla, Tiihonen, Pekka, Mervaala, Esa and Kulkas, Antti (2016). Length of individual apnea events is increased by supine position and modulated by severity of obstructive sleep apnea. Sleep Disorders, 2016, 9645347-13. doi: 10.1155/2016/9645347

Length of individual apnea events is increased by supine position and modulated by severity of obstructive sleep apnea

2016

Journal Article

Effect of oxygen desaturation threshold on determination of OSA severity during weight loss

Myllymaa, Katja, Myllymaa, Sami, Leppänen, Timo, Kulkas, Antti, Kupari, Salla, Tiihonen, Pekka, Mervaala, Esa, Seppä, Juha, Tuomilehto, Henri and Töyräs, Juha (2016). Effect of oxygen desaturation threshold on determination of OSA severity during weight loss. Sleep and Breathing, 20 (1), 33-42. doi: 10.1007/s11325-015-1180-4

Effect of oxygen desaturation threshold on determination of OSA severity during weight loss

2016

Journal Article

New method for point-of-care osteoporosis screening and diagnostics

Karjalainen, J. P., Riekkinen, O., Töyräs, J., Jurvelin, J. S. and Kröger, H. (2016). New method for point-of-care osteoporosis screening and diagnostics. Osteoporosis International, 27 (3), 971-977. doi: 10.1007/s00198-015-3387-4

New method for point-of-care osteoporosis screening and diagnostics

2016

Journal Article

Optical spectroscopic determination of human meniscus composition

Ala-Myllymäki, Juho, Honkanen, Juuso T.J., Töyräs, Juha and Afara, Isaac O. (2016). Optical spectroscopic determination of human meniscus composition. Journal of Orthopaedic Research, 34 (2), 270-278. doi: 10.1002/jor.23025

Optical spectroscopic determination of human meniscus composition

2016

Journal Article

Menthol concentration in topical cold gel does not have significant effect on skin cooling

Lasanen, R., Julkunen, P., Airaksinen, O. and Töyräs, J. (2016). Menthol concentration in topical cold gel does not have significant effect on skin cooling. Skin Research and Technology, 22 (1), 40-45. doi: 10.1111/srt.12226

Menthol concentration in topical cold gel does not have significant effect on skin cooling

2016

Journal Article

Estimation of systematic and spatially correlated components of random signals from repeated measurements: application to contrast enhanced computer tomography measurements

Huttunen, J. M.J., Turunen, M. J., Honkanen, J. T.J., Töyräs, J. and Jurvelin, J. S. (2016). Estimation of systematic and spatially correlated components of random signals from repeated measurements: application to contrast enhanced computer tomography measurements. SIAM Journal on Scientific Computing, 38 (1), B77-B99. doi: 10.1137/15M1017727

Estimation of systematic and spatially correlated components of random signals from repeated measurements: application to contrast enhanced computer tomography measurements

2015

Journal Article

Inter-individual changes in cortical bone three-dimensional microstructure and elastic coefficient have opposite effects on radial sound speed

Eneh, Chibuzor T. M., Liukkonen, Jukka, Malo, Markus K. H., Jurvelin, Jukka S. and Töyräs, Juha (2015). Inter-individual changes in cortical bone three-dimensional microstructure and elastic coefficient have opposite effects on radial sound speed. Journal of the Acoustical Society of America, 138 (6), 3491-3499. doi: 10.1121/1.4934276

Inter-individual changes in cortical bone three-dimensional microstructure and elastic coefficient have opposite effects on radial sound speed

2015

Journal Article

A Handy EEG Electrode Set for patients suffering from altered mental state

Lepola, Pasi, Myllymaa, Sami, Töyräs, Juha, Hukkanen, Taina, Mervaala, Esa, Määttä, Sara, Lappalainen, Reijo and Myllymaa, Katja (2015). A Handy EEG Electrode Set for patients suffering from altered mental state. Journal of Clinical Monitoring and Computing, 29 (6), 697-705. doi: 10.1007/s10877-014-9652-9

A Handy EEG Electrode Set for patients suffering from altered mental state

2015

Journal Article

Estimation of articular cartilage properties using multivariate analysis of optical coherence tomography signal

Puhakka, P. H., te Moller, N. C.R., Afara, I. O., Mäkelä, J. T.A., Tiitu, V., Korhonen, R. K., Brommer, H., Virén, T., Jurvelin, J. S. and Töyräs, J. (2015). Estimation of articular cartilage properties using multivariate analysis of optical coherence tomography signal. Osteoarthritis and Cartilage, 23 (12), 2206-2213. doi: 10.1016/j.joca.2015.05.034

Estimation of articular cartilage properties using multivariate analysis of optical coherence tomography signal

2015

Journal Article

Amount of weight loss or gain influences the severity of respiratory events in sleep apnea

Kulkas, A., Leppänen, T., Sahlman, J., Tiihonen, P., Mervaala, E., Kokkarinen, J., Randell, J., Seppä, J., Töyräs, J. and Tuomilehto, H. (2015). Amount of weight loss or gain influences the severity of respiratory events in sleep apnea. Medical and Biological Engineering and Computing, 53 (10), 975-988. doi: 10.1007/s11517-015-1290-y

Amount of weight loss or gain influences the severity of respiratory events in sleep apnea

2015

Journal Article

Quantitative evaluation of knee subchondral bone mineral density using cone beam computed tomography

Turunen, Mikael J., Töyras, Juha, Kokkonen, Harri T and Jurvelin, Jukka S. (2015). Quantitative evaluation of knee subchondral bone mineral density using cone beam computed tomography. IEEE Transactions on Medical Imaging, 34 (10) 7097073, 2186-2190. doi: 10.1109/TMI.2015.2426684

Quantitative evaluation of knee subchondral bone mineral density using cone beam computed tomography

2015

Journal Article

Diagnosis of knee osteochondral lesions with ultrasound imaging

Penttilä, Pekko, Liukkonen, Jukka, Joukainen, Antti, Virén, Tuomas, Jurvelin, Jukka S., Töyräs, Juha and Kröger, Heikki (2015). Diagnosis of knee osteochondral lesions with ultrasound imaging. Arthroscopy Techniques, 4 (5), e429-e433. doi: 10.1016/j.eats.2015.04.002

Diagnosis of knee osteochondral lesions with ultrasound imaging

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

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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