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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

141 - 160 of 406 works

2020

Conference Publication

HYPOXEMIA DURING SLEEP DISORDERED BREATHING AND CARDIOVASCULAR DISEASE: A COMPARISON OF DIFFERENT OXYGEN DESATURATION MEASURES

Mazzotti, D. R., Leppanen, T., Sands, S., Toyras, J., Wellman, A., Kulkas, A., Redline, S., Karhu, T. and Azarbarzin, A. (2020). HYPOXEMIA DURING SLEEP DISORDERED BREATHING AND CARDIOVASCULAR DISEASE: A COMPARISON OF DIFFERENT OXYGEN DESATURATION MEASURES. 34th Annual Meeting of the Associated-Professional-Sleep-Societies (SLEEP), Philadelphia Pa, Jun 13-17, 2020. CARY: OXFORD UNIV PRESS INC.

HYPOXEMIA DURING SLEEP DISORDERED BREATHING AND CARDIOVASCULAR DISEASE: A COMPARISON OF DIFFERENT OXYGEN DESATURATION MEASURES

2020

Journal Article

Comparison of water, hydroxyproline, uronic acid and elastin contents of bovine knee ligaments and patellar tendon and their relationships with biomechanical properties

Ristaniemi, A., Torniainen, J., Stenroth, L., Finnilä, M. A.J., Paakkonen, T., Töyräs, J. and Korhonen, R. K. (2020). Comparison of water, hydroxyproline, uronic acid and elastin contents of bovine knee ligaments and patellar tendon and their relationships with biomechanical properties. Journal of the Mechanical Behavior of Biomedical Materials, 104 103639, 103639. doi: 10.1016/j.jmbbm.2020.103639

Comparison of water, hydroxyproline, uronic acid and elastin contents of bovine knee ligaments and patellar tendon and their relationships with biomechanical properties

2020

Journal Article

Author Correction: Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea (Scientific Reports, (2019), 9, 1, (13200), 10.1038/s41598-019-49330-7)

Nikkonen, Sami, Afara, Isaac O., Leppänen, Timo and Töyräs, Juha (2020). Author Correction: Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea (Scientific Reports, (2019), 9, 1, (13200), 10.1038/s41598-019-49330-7). Scientific Reports, 10 (1) 4977, 4977. doi: 10.1038/s41598-020-62003-0

Author Correction: Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea (Scientific Reports, (2019), 9, 1, (13200), 10.1038/s41598-019-49330-7)

2020

Journal Article

Machine learning classification of articular cartilage integrity using near infrared spectroscopy

Afara, Isaac O., Sarin, Jaakko K., Ojanen, Simo, Finnilä, Mikko A. J., Herzog, Walter, Saarakkala, Simo, Korhonen, Rami K. and Töyräs, Juha (2020). Machine learning classification of articular cartilage integrity using near infrared spectroscopy. Cellular and Molecular Bioengineering, 13 (3), 219-228. doi: 10.1007/s12195-020-00612-5

Machine learning classification of articular cartilage integrity using near infrared spectroscopy

2020

Journal Article

Effect of sweating on electrode-skin contact impedances and artifacts in EEG recordings with various screen-printed Ag/Agcl electrodes

Kalevo, Laura, Myllymaa, Sami, Miettinen, Tomi, Leino, Akseli, Kainulainen, Samu, Korkalainen, Henri, Myllymaa, Katja, Toyras, Juha, Leppanen, Timo and Laitinen, Tiina (2020). Effect of sweating on electrode-skin contact impedances and artifacts in EEG recordings with various screen-printed Ag/Agcl electrodes. IEEE Access, 8 9017959, 50934-50943. doi: 10.1109/ACCESS.2020.2977172

Effect of sweating on electrode-skin contact impedances and artifacts in EEG recordings with various screen-printed Ag/Agcl electrodes

2020

Journal Article

Severe desaturations increase psychomotor vigilance task-based median reaction time and number of lapses in obstructive sleep apnoea patients

Kainulainen, Samu, Duce, Brett, Korkalainen, Henri, Oksenberg, Arie, Leino, Akseli, Arnardottir, Erna S., Kulkas, Antti, Myllymaa, Sami, Töyräs, Juha and Leppänen, Timo (2020). Severe desaturations increase psychomotor vigilance task-based median reaction time and number of lapses in obstructive sleep apnoea patients. European Respiratory Journal, 55 (4) 1901849, 1901849. doi: 10.1183/13993003.01849-2019

Severe desaturations increase psychomotor vigilance task-based median reaction time and number of lapses in obstructive sleep apnoea patients

2020

Journal Article

Acute stroke and TIA patients have specific polygraphic features of obstructive sleep apnea

Leino, Akseli, Westeren-Punnonen, Susanna, Töyräs, Juha, Myllymaa, Sami, Leppänen, Timo, Ylä-Herttuala, Salla, Muraja-Murro, Anu, Kantanen, Anne-Mari, Autere, Jaana, Jäkälä, Pekka, Mervaala, Esa and Myllymaa, Katja (2020). Acute stroke and TIA patients have specific polygraphic features of obstructive sleep apnea. Sleep and Breathing, 24 (4), 1495-1505. doi: 10.1007/s11325-019-02010-2

Acute stroke and TIA patients have specific polygraphic features of obstructive sleep apnea

2020

Journal Article

Near infrared spectroscopy enables differentiation of mechanically and enzymatically induced cartilage injuries

Nippolainen, Ervin, Shaikh, Rubina, Virtanen, Vesa, Rieppo, Lassi, Saarakkala, Simo, Töyräs, Juha and Afara, Isaac O. (2020). Near infrared spectroscopy enables differentiation of mechanically and enzymatically induced cartilage injuries. Annals of Biomedical Engineering, 48 (9), 2343-2353. doi: 10.1007/s10439-020-02506-z

Near infrared spectroscopy enables differentiation of mechanically and enzymatically induced cartilage injuries

2020

Journal Article

Longer duration electroencephalogram arousals have a better relationship with impaired vigilance and health status in obstructive sleep apnoea

Duce, Brett, Kulkas, Antti, Töyräs, Juha, Terrill, Philip and Hukins, Craig (2020). Longer duration electroencephalogram arousals have a better relationship with impaired vigilance and health status in obstructive sleep apnoea. Sleep and Breathing, 25 (1), 263-270. doi: 10.1007/s11325-020-02110-4

Longer duration electroencephalogram arousals have a better relationship with impaired vigilance and health status in obstructive sleep apnoea

2019

Journal Article

Mortality-risk-based apnea–hypopnea index thresholds for diagnostics of obstructive sleep apnea

Korkalainen, Henri, Töyräs, Juha, Nikkonen, Sami and Leppänen, Timo (2019). Mortality-risk-based apnea–hypopnea index thresholds for diagnostics of obstructive sleep apnea. Journal of Sleep Research, 28 (6) e12855, e12855. doi: 10.1111/jsr.12855

Mortality-risk-based apnea–hypopnea index thresholds for diagnostics of obstructive sleep apnea

2019

Journal Article

Does magnetic resonance imaging provide superior reliability for achilles and patellar tendon cross-sectional area measurements compared with ultrasound imaging?

Stenroth, Lauri, Sefa, Sandra, Arokoski, Jari and Töyräs, Juha (2019). Does magnetic resonance imaging provide superior reliability for achilles and patellar tendon cross-sectional area measurements compared with ultrasound imaging?. Ultrasound in Medicine and Biology, 45 (12), 3186-3198. doi: 10.1016/j.ultrasmedbio.2019.08.001

Does magnetic resonance imaging provide superior reliability for achilles and patellar tendon cross-sectional area measurements compared with ultrasound imaging?

2019

Conference Publication

Differentiating Sleepy and non-sleepy obstructive sleep apnea patients using nocturnal pulse oximetry and deep learning

Kainulainen, S., Toyras, J., Oksenberg, A., Korkalainen, H., Afara, I., Leino, A., Kalevo, L., Nikkonen, S., Gadoth, N., Kulkas, A., Myllymaa, S. and Leppanen, T. (2019). Differentiating Sleepy and non-sleepy obstructive sleep apnea patients using nocturnal pulse oximetry and deep learning. World Sleep Congress, Vancouver, Canada, 20-25 September 2019. Amsterdam, Netherlands: Elsevier . doi: 10.1016/j.sleep.2019.11.508

Differentiating Sleepy and non-sleepy obstructive sleep apnea patients using nocturnal pulse oximetry and deep learning

2019

Journal Article

Contrast enhanced computed tomography for real-time quantification of glycosaminoglycans in cartilage tissue engineered constructs

Garcia, João P., Longoni, Alessia, Gawlitta, Debby, J.W.P. Rosenberg, Antoine, Grinstaff, Mark W., Töyräs, Juha, Weinans, Harrie, Creemers, Laura B. and Pouran, Behdad (2019). Contrast enhanced computed tomography for real-time quantification of glycosaminoglycans in cartilage tissue engineered constructs. Acta Biomaterialia, 100, 202-212. doi: 10.1016/j.actbio.2019.09.014

Contrast enhanced computed tomography for real-time quantification of glycosaminoglycans in cartilage tissue engineered constructs

2019

Conference Publication

Artificial neural network analysis of blood oxygen saturation signal enables accurate automatic screening of sleep apnea

Nikkonen, S., Afara, I., Myllymaa, S., Toyras, J. and Leppanen, T. (2019). Artificial neural network analysis of blood oxygen saturation signal enables accurate automatic screening of sleep apnea. World Sleep Congress, Vancouver, Canada, 20-25 September 2019. Amsterdam, Netherlands: Elsevier . doi: 10.1016/j.sleep.2019.11.624

Artificial neural network analysis of blood oxygen saturation signal enables accurate automatic screening of sleep apnea

2019

Conference Publication

Deep learning enables accurate sleep staging based on a single frontal EEG channel

Korkalainen, H., Aakko, J., Nikkonen, S., Kainulainen, S., Leino, A., Duce, B., Afara, I. O., Myllymaa, S., Toyras, J. and Leppanen, T. (2019). Deep learning enables accurate sleep staging based on a single frontal EEG channel. 15th World Sleep Congress, World Sleep 2019, Vancouver, Canada, 20-25 September, 2019 . Amsterdam, Netherlands: Elsevier BV.

Deep learning enables accurate sleep staging based on a single frontal EEG channel

2019

Journal Article

Effects of body mass on microstructural features of the osteochondral unit: A comparative analysis of 37 mammalian species

Mancini, I. A.D., Rieppo, L., Pouran, B., Afara, I. O., Braganca, F.M. Serra, van Rijen, M. H.P., Kik, M., Weinans, H., Toyras, J., van Weeren, P. R. and Malda, J. (2019). Effects of body mass on microstructural features of the osteochondral unit: A comparative analysis of 37 mammalian species. Bone, 127, 664-673. doi: 10.1016/j.bone.2019.07.001

Effects of body mass on microstructural features of the osteochondral unit: A comparative analysis of 37 mammalian species

2019

Journal Article

Triple contrast CT method enables simultaneous evaluation of articular cartilage composition and segmentation

Honkanen, Miitu K. M., Saukko, Annina E. A., Turunen, Mikael J., Xu, Wujun, Lovric, Goran, Honkanen, Juuso T. J., Grinstaff, Mark W., Lehto, Vesa-Pekka and Töyräs, Juha (2019). Triple contrast CT method enables simultaneous evaluation of articular cartilage composition and segmentation. Annals of Biomedical Engineering, 48 (2), 556-567. doi: 10.1007/s10439-019-02362-6

Triple contrast CT method enables simultaneous evaluation of articular cartilage composition and segmentation

2019

Journal Article

Synchrotron MicroCT reveals the potential of the dual contrast technique for quantitative assessment of human articular cartilage composition

Honkanen, Miitu K. M., Saukko, Annina E. A., Turunen, Mikael J., Shaikh, Rubina, Prakash, Mithilesh, Lovric, Goran, Joukainen, Antti, Kroger, Heikki, Grinstaff, Mark W. and Toyras, Juha (2019). Synchrotron MicroCT reveals the potential of the dual contrast technique for quantitative assessment of human articular cartilage composition. Journal of Orthopaedic Research, 38 (3) jor.24479, 563-573. doi: 10.1002/jor.24479

Synchrotron MicroCT reveals the potential of the dual contrast technique for quantitative assessment of human articular cartilage composition

2019

Journal Article

Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea

Nikkonen, Sami, Afara, Isaac O., Leppänen, Timo and Töyräs, Juha (2019). Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea. Scientific Reports, 9 (1) 13200, 13200. doi: 10.1038/s41598-019-49330-7

Artificial neural network analysis of the oxygen saturation signal enables accurate diagnostics of sleep apnea

2019

Journal Article

Dataset on equine cartilage near infrared spectra, composition, and functional properties

Sarin, Jaakko K., Torniainen, Jari, Prakash, Mithilesh, Rieppo, Lassi, Afara, Isaac O. and Toyras, Juha (2019). Dataset on equine cartilage near infrared spectra, composition, and functional properties. Scientific Data, 6 (1) 164, 164. doi: 10.1038/s41597-019-0170y

Dataset on equine cartilage near infrared spectra, composition, and functional properties

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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