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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

1 - 20 of 398 works

2025

Journal Article

Dual-Contrast Agent with Nanoparticle and Molecular Components in Photon-Counting Computed Tomography: Assessing Articular Cartilage Health

Paakkari, Petri, Inkinen, Satu I., Jäntti, Jiri, Tuppurainen, Juuso, Fugazzola, Maria C., Joenathan, Anisha, Ylisiurua, Sampo, Nieminen, Miika T., Kröger, Heikki, Mikkonen, Santtu, van Weeren, René, Snyder, Brian D., Töyräs, Juha, Honkanen, Miitu K. M., Matikka, Hanna, Grinstaff, Mark W., Honkanen, Juuso T. J. and Mäkelä, Janne T. A. (2025). Dual-Contrast Agent with Nanoparticle and Molecular Components in Photon-Counting Computed Tomography: Assessing Articular Cartilage Health. Annals of Biomedical Engineering, 1-16. doi: 10.1007/s10439-025-03715-0

Dual-Contrast Agent with Nanoparticle and Molecular Components in Photon-Counting Computed Tomography: Assessing Articular Cartilage Health

2025

Journal Article

Hybrid discrete and finite element analysis enables fast evaluation of hip joint cartilage mechanical response

Venäläinen, Mikko S., Li, Mao, Töyräs, Juha, Korhonen, Rami K., Fripp, Jurgen, Crozier, Stuart, Chandra, Shekhar S. and Engstrom, Craig (2025). Hybrid discrete and finite element analysis enables fast evaluation of hip joint cartilage mechanical response. Journal of Biomechanics, 182 112568, 1-6. doi: 10.1016/j.jbiomech.2025.112568

Hybrid discrete and finite element analysis enables fast evaluation of hip joint cartilage mechanical response

2025

Journal Article

Machine learning approaches for the fusion of near-infrared, mid-infrared, and Raman data to identify cartilage degradation in human osteochondral plugs

Tafintseva, Valeria, Nippolainen, Ervin, Virtanen, Vesa, Solheim, Johanne Heitmann, Zimmermann, Boris, Saarakkala, Simo, Kröger, Heikki, Kohler, Achim, Töyräs, Juha, Afara, Isaac O. and Shaikh, Rubina (2025). Machine learning approaches for the fusion of near-infrared, mid-infrared, and Raman data to identify cartilage degradation in human osteochondral plugs. Applied Spectroscopy, 79 (3), 385-395. doi: 10.1177/00037028241285583

Machine learning approaches for the fusion of near-infrared, mid-infrared, and Raman data to identify cartilage degradation in human osteochondral plugs

2025

Journal Article

Community prevalence of positional obstructive sleep apnea

Duce, Brett L., Kulkas, Antti E., Leppänen, Timo T., Oksenberg, Arie, Töyräs, Juha and Hukins, Craig A. (2025). Community prevalence of positional obstructive sleep apnea. Journal of Clinical Sleep Medicine. doi: 10.5664/jcsm.11584

Community prevalence of positional obstructive sleep apnea

2025

Journal Article

The Relationship Between the Optical Properties of Articular Cartilage and the Biomechanical Parameters of the Tissue

Kafian-Attari, Iman, Ebrahimi, Mohammad, Nippolainen, Ervin, Mirhashemi, Arash, Paakkari, Petri, Bergmann, Florian, Foschum, Florian, Kienle, Alwin, Toyras, Juha and Afara, Isaac (2025). The Relationship Between the Optical Properties of Articular Cartilage and the Biomechanical Parameters of the Tissue. Journal of Biophotonics. doi: 10.1002/jbio.202400460

The Relationship Between the Optical Properties of Articular Cartilage and the Biomechanical Parameters of the Tissue

2024

Journal Article

Photon-counting in dual-contrast-enhanced computed tomography: a proof-of-concept quantitative biomechanical assessment of articular cartilage

Paakkari, Petri, Inkinen, Satu I., Mohammadi, Ali, Nieminen, Miika T., Joenathan, Anisha, Grinstaff, Mark W., Töyräs, Juha, Mäkelä, Janne T. A. and Honkanen, Juuso T. J. (2024). Photon-counting in dual-contrast-enhanced computed tomography: a proof-of-concept quantitative biomechanical assessment of articular cartilage. Scientific Reports, 14 (1) 29956, 1-14. doi: 10.1038/s41598-024-78237-1

Photon-counting in dual-contrast-enhanced computed tomography: a proof-of-concept quantitative biomechanical assessment of articular cartilage

2024

Journal Article

The human patellar tendon is mechanically homogenous at its mid-substance

Kositsky, Adam, Stenroth, Lauri, Nippolainen, Ervin, Torniainen, Jari, Mäkelä, Janne T.A., Paakkari, Petri, Paakkonen, Tommi, Kröger, Heikki, Töyräs, Juha, Afara, Isaac O. and Korhonen, Rami K. (2024). The human patellar tendon is mechanically homogenous at its mid-substance. Journal of the Mechanical Behavior of Biomedical Materials, 163 106875, 106875. doi: 10.1016/j.jmbbm.2024.106875

The human patellar tendon is mechanically homogenous at its mid-substance

2024

Journal Article

Temporal and sleep stage‐dependent agreement in manual scoring of respiratory events

Pitkänen, Minna, Pitkänen, Henna, Nath, Rajdeep Kumar, Nikkonen, Sami, Kainulainen, Samu, Korkalainen, Henri, Ólafsdóttir, Kristín Anna, Arnardottir, Erna Sif, Sigurdardottir, Sigridur, Penzel, Thomas, Fanfulla, Francesco, Anttalainen, Ulla, Saaresranta, Tarja, Grote, Ludger, Hedner, Jan, Staats, Richard, Töyräs, Juha and Leppänen, Timo (2024). Temporal and sleep stage‐dependent agreement in manual scoring of respiratory events. Journal of Sleep Research, e14391. doi: 10.1111/jsr.14391

Temporal and sleep stage‐dependent agreement in manual scoring of respiratory events

2024

Journal Article

Retrospective validation of automatic sleep analysis with grey areas model for human‐in‐the‐loop scoring approach

Rusanen, Matias, Jouan, Gabriel, Huttunen, Riku, Nikkonen, Sami, Sigurðardóttir, Sigríður, Töyräs, Juha, Duce, Brett, Myllymaa, Sami, Arnardottir, Erna Sif, Leppänen, Timo, Islind, Anna Sigridur, Kainulainen, Samu and Korkalainen, Henri (2024). Retrospective validation of automatic sleep analysis with grey areas model for human‐in‐the‐loop scoring approach. Journal of Sleep Research, e14362. doi: 10.1111/jsr.14362

Retrospective validation of automatic sleep analysis with grey areas model for human‐in‐the‐loop scoring approach

2024

Conference Publication

Worsening hypoxic load impairs cardiorespiratory coupling

Hietakoste, Salla, Armañac-Julián, Pablo, Karhu, Tuomas, Bailón, Raquel, Sillanmäki, Saara, Töyräs, Juha, Leppänen, Timo, Myllymaa, Sami and Kainulainen, Samu (2024). Worsening hypoxic load impairs cardiorespiratory coupling. 2024 13th Conference of the European Study Group on Cardiovascular Oscillations: Physiologically-Guided Signal Processing of Cardiovascular and Cerebrovascular Oscillations, ESGCO 2024, Zaragoza, Spain, 23-25 October 2024. Piscataway, NJ, United States: Institute of Electrical and Electronics Engineers. doi: 10.1109/esgco63003.2024.10767029

Worsening hypoxic load impairs cardiorespiratory coupling

2024

Journal Article

Arousal burden is highest in supine sleeping position and during light sleep

Pitkänen, Minna, Huovinen, Juho, Rissanen, Marika, Pitkänen, Henna, Kainulainen, Samu, Penzel, Thomas, Fanfulla, Francesco, Anttalainen, Ulla, Saaresranta, Tarja, Grote, Ludger, Hedner, Jan, Staats, Richard, Duce, Brett, Töyräs, Juha, Oksenberg, Arie and Leppänen, Timo (2024). Arousal burden is highest in supine sleeping position and during light sleep. Journal of Clinical Sleep Medicine, 21 (2), 337-344. doi: 10.5664/jcsm.11398

Arousal burden is highest in supine sleeping position and during light sleep

2024

Conference Publication

Ventilatory burden predicts change in self‑reported sleepiness following continuous positive airway pressure treatment in obstructive sleep apnoea

Staykov, E., Mann, D., Duce, B., Kainulainen, S., Leppänen, T., Töyräs, J., Azarbarzin, A., Sands, S. and Terrill, P. (2024). Ventilatory burden predicts change in self‑reported sleepiness following continuous positive airway pressure treatment in obstructive sleep apnoea. 2024 Australasian Sleep Association, Gold Coast, QLD Australia, 16-19 October 2024. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpae070.090

Ventilatory burden predicts change in self‑reported sleepiness following continuous positive airway pressure treatment in obstructive sleep apnoea

2024

Conference Publication

O004 Incorporating Arousals into Sleep vs. Wakefulness Classification Outperforms Traditional Binary Classification at 1-Second Epoch Resolution

Somaskandhan, P., Korkalainen, H., Leppänen, T., Töyräs, J., Melehan, K., Wilson, D., Ruehland, W., Mann, D. and Terrill, P. (2024). O004 Incorporating Arousals into Sleep vs. Wakefulness Classification Outperforms Traditional Binary Classification at 1-Second Epoch Resolution. Sleep DownUnder 2024, Gold Coast, QLD Australia, 16-19 October 2024. Oxford, United Kingdom: Oxford University Press. doi: 10.1093/sleepadvances/zpae070.004

O004 Incorporating Arousals into Sleep vs. Wakefulness Classification Outperforms Traditional Binary Classification at 1-Second Epoch Resolution

2024

Journal Article

An automated and robust tool for musculoskeletal and finite element modeling of the knee joint

Esrafilian, Amir, Chandra, Shekhar S., Gatti, Anthony A., Nissi, Mikko, Mustonen, Anne-Mari, Saisanen, Laura, Reijonen, Jusa, Nieminen, Petteri, Julkunen, Petro, Toyras, Juha, Saxby, David J., Lloyd, David G. and Korhonen, Rami K. (2024). An automated and robust tool for musculoskeletal and finite element modeling of the knee joint. IEEE Transactions on Biomedical Engineering, 72 (1), 1-13. doi: 10.1109/tbme.2024.3438272

An automated and robust tool for musculoskeletal and finite element modeling of the knee joint

2024

Journal Article

Relationship between depth-wise refractive index and biomechanical properties of human articular cartilage

Khan, Bilour, Nippolainen, Ervin, Shahini, Fatemeh, Nonappa, , Popov, Alexey, Töyräs, Juha and Afara, Isaac O. (2024). Relationship between depth-wise refractive index and biomechanical properties of human articular cartilage. Journal of biomedical optics, 29 (9) 095003, 095003-095003. doi: 10.1117/1.JBO.29.9.095003

Relationship between depth-wise refractive index and biomechanical properties of human articular cartilage

2024

Journal Article

“An excellent servant but a terrible master”: understanding the value of wearables for self-management in people with cystic fibrosis and their healthcare providers – a qualitative study

Mattison, Graeme, Canfell, Oliver J., Smith, Daniel, Forrester, Doug, Reid, David, Töyräs, Juha and Dobbins, Chelsea (2024). “An excellent servant but a terrible master”: understanding the value of wearables for self-management in people with cystic fibrosis and their healthcare providers – a qualitative study. International Journal of Medical Informatics, 189 105532, 105532. doi: 10.1016/j.ijmedinf.2024.105532

“An excellent servant but a terrible master”: understanding the value of wearables for self-management in people with cystic fibrosis and their healthcare providers – a qualitative study

2024

Journal Article

Estimation of photon path length and penetration depth in articular cartilage zonal architecture over the therapeutic window

Kafian-Attari, I., Nippolainen, E., Bergmann, F., George, A., Paakkari, P., Mirhashemi, A., Foschum, F., Kienle, A., Toyras, J. and Afara, I. O. (2024). Estimation of photon path length and penetration depth in articular cartilage zonal architecture over the therapeutic window. IEEE Transactions on Biomedical Engineering, 71 (8), 2300-2310. doi: 10.1109/TBME.2024.3368012

Estimation of photon path length and penetration depth in articular cartilage zonal architecture over the therapeutic window

2024

Journal Article

Infrared spectroscopy can differentiate between cartilage injury models: implication for assessment of cartilage integrity

Shahini, Fatemeh, Oskouei, Soroush, Nippolainen, Ervin, Mohammadi, Ali, Sarin, Jaakko K., Moller, Nikae C. R. te, Brommer, Harold, Shaikh, Rubina, Korhonen, Rami K., van Weeren, P. René, Töyräs, Juha and Afara, Isaac O. (2024). Infrared spectroscopy can differentiate between cartilage injury models: implication for assessment of cartilage integrity. Annals of Biomedical Engineering, 52 (9), 2521-2533. doi: 10.1007/s10439-024-03540-x

Infrared spectroscopy can differentiate between cartilage injury models: implication for assessment of cartilage integrity

2024

Journal Article

Laser-irradiating infrared attenuated total reflection spectroscopy of articular cartilage: potential and challenges for diagnosing osteoarthritis

Krebs, P., Nägele, M., Fomina, P., Virtanen, V., Nippolainen, E., Shaikh, R., Afara, I. O., Töyräs, J., Usenov, I., Sakharova, T., Artyushenko, V., Tafintseva, V., Solheim, J.H., Zimmermann, B., Kohler, A., König, O., Saarakkala, S. and Mizaikoff, B. (2024). Laser-irradiating infrared attenuated total reflection spectroscopy of articular cartilage: potential and challenges for diagnosing osteoarthritis. Osteoarthritis and Cartilage Open, 6 (2) 100466. doi: 10.1016/j.ocarto.2024.100466

Laser-irradiating infrared attenuated total reflection spectroscopy of articular cartilage: potential and challenges for diagnosing osteoarthritis

2024

Journal Article

Sleep stage continuity is associated with objective daytime sleepiness in patients with suspected obstructive sleep apnea

Chen, Xin, Leppänen, Timo, Kainulainen, Samu, Howarth, Timothy P., Oksenberg, Arie, Töyräs, Juha, Terrill, Philip I. and Korkalainen, Henri (2024). Sleep stage continuity is associated with objective daytime sleepiness in patients with suspected obstructive sleep apnea. Journal of Clinical Sleep Medicine, 20 (10), 1595-1606. doi: 10.5664/jcsm.11198

Sleep stage continuity is associated with objective daytime sleepiness in patients with suspected obstructive sleep apnea

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

Enquiries

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