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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

410 works between 1999 and 2025

121 - 140 of 410 works

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

Structure, composition and fibril-reinforced poroviscoelastic properties of bovine knee ligaments and patellar tendon

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

Structural, compositional, and functional effects of blunt and sharp cartilage damage on the joint: A 9-month equine groove model study

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

Neural network analysis of nocturnal SpO2 signal enables easy screening of sleep apnea in patients with acute cerebrovascular disease

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

Machine learning augmented near-infrared spectroscopy: in vivo follow-up of cartilage defects

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

Longer apneas and hypopneas are associated with greater ultra-short-term HRV in obstructive sleep apnea

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

Detailed assessment of sleep architecture with deep learning and shorter epoch-to-epoch duration reveals sleep fragmentation of patients with obstructive sleep apnea

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

Rapid CT-based estimation of articular cartilage biomechanics in the knee joint without cartilage segmentation

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

Tissue optical properties combined with machine learning enables estimation of articular cartilage composition and functional integrity

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

Tailored synthesis of PEGylated bismuth nanoparticles for x-ray computed tomography and photothermal therapy: one-pot, targeted pyrolysis, and self-promotion

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

Increased nocturnal arterial pulsation frequencies of obstructive sleep apnoea patients is associated with an increased number of lapses in a psychomotor vigilance task

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

Power spectral densities of nocturnal pulse oximetry signals differ in OSA patients with and without daytime sleepiness

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

Effects of human articular cartilage constituents on simultaneous diffusion of cationic and nonionic contrast agents

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

Quantification of myocardial blood flow by machine learning analysis of modified dual bolus MRI examination

2020

Journal Article

Near-infrared spectroscopy for mapping of human meniscus biochemical constituents

Ala-Myllymäki, Juho, Paakkonen, Tommi, Joukainen, Antti, Kröger, Heikki, Lehenkari, Petri, Töyräs, Juha and Afara, Isaac O. (2020). Near-infrared spectroscopy for mapping of human meniscus biochemical constituents. Annals of Biomedical Engineering, 49 (1), 469-476. doi: 10.1007/s10439-020-02578-x

Near-infrared spectroscopy for mapping of human meniscus biochemical constituents

2020

Journal Article

Accurate deep learning-based sleep staging in a clinical population with suspected obstructive sleep apnea

Korkalainen, Henri, Leppanen, Timo, Aakko, Juhani, Nikkonen, Sami, Kainulainen, Samu, Leino, Akseli, Duce, Brett, Afara, Isaac Oluwaseun, Myllymaa, Sami and Toyras, Juha (2020). Accurate deep learning-based sleep staging in a clinical population with suspected obstructive sleep apnea. IEEE Journal of Biomedical and Health Informatics, 24 (7) 8936942, 2073-2081. doi: 10.1109/JBHI.2019.2951346

Accurate deep learning-based sleep staging in a clinical population with suspected obstructive sleep apnea

2020

Journal Article

Comparison of the effect of weight change, simulated computational continuous positive airway pressure treatment and positional therapy on severity of sleep apnea

Kulkas, Antti, Duce, Brett, Töyräs, Juha, Seppä, Juha and Leppänen, Timo (2020). Comparison of the effect of weight change, simulated computational continuous positive airway pressure treatment and positional therapy on severity of sleep apnea. Journal of Sleep Research, 30 (2) e13070, e13070. doi: 10.1111/jsr.13070

Comparison of the effect of weight change, simulated computational continuous positive airway pressure treatment and positional therapy on severity of sleep apnea

2020

Journal Article

Evaluation of articular cartilage with quantitative MRI in an equine model of post-traumatic osteoarthritis

Kajabi, Abdul Wahed, Casula, Victor, Sarin, Jaakko K., Ketola, Juuso H., Nykänen, Olli, te Moller, Nikae C. R., Mancini, Irina A. D., Visser, Jetze, Brommer, Harold, René van Weeren, P., Malda, Jos, Töyräs, Juha, Nieminen, Miika T. and Nissi, Mikko J. (2020). Evaluation of articular cartilage with quantitative MRI in an equine model of post-traumatic osteoarthritis. Journal of Orthopaedic Research, 39 (1) jor.24780, 63-73. doi: 10.1002/jor.24780

Evaluation of articular cartilage with quantitative MRI in an equine model of post-traumatic osteoarthritis

2020

Journal Article

Bright ultrashort echo time SWIFT MRI signal at the osteochondral junction is not located in the calcified cartilage

Nykänen, Olli, Leskinen, Henri P. P., Finnilä, Mikko A. J., Karhula, Sakari S., Turunen, Mikael J., Töyräs, Juha, Saarakkala, Simo and Nissi, Mikko J. (2020). Bright ultrashort echo time SWIFT MRI signal at the osteochondral junction is not located in the calcified cartilage. Journal of Orthopaedic Research, 38 (12) jor.24777, 2649-2656. doi: 10.1002/jor.24777

Bright ultrashort echo time SWIFT MRI signal at the osteochondral junction is not located in the calcified cartilage

2020

Journal Article

Dual contrast in computed tomography allows earlier characterization of articular cartilage over single contrast

Bhattarai, Abhisek, Pouran, Behdad, Mäkelä, Janne T. A., Shaikh, Rubina, Honkanen, Miitu K. M., Prakash, Mithilesh, Kröger, Heikki, Grinstaff, Mark W., Weinans, Harrie, Jurvelin, Jukka S. and Töyräs, Juha (2020). Dual contrast in computed tomography allows earlier characterization of articular cartilage over single contrast. Journal of Orthopaedic Research, 38 (10) jor.24774, 2230-2238. doi: 10.1002/jor.24774

Dual contrast in computed tomography allows earlier characterization of articular cartilage over single contrast

2020

Journal Article

Estimating daytime sleepiness with previous night EEG, EOG and EMG spectrograms in patients with suspected sleep apnea using a convolutional neural network

Nikkonen, Sami, Korkalainen, Henri, Kainulainen, Samu, Myllymaa, Sami, Leino, Akseli, Kalevo, Laura, Oksenberg, Arie, Leppänen, Timo and Töyräs, Juha (2020). Estimating daytime sleepiness with previous night EEG, EOG and EMG spectrograms in patients with suspected sleep apnea using a convolutional neural network. Sleep, 43 (12) zsaa106. doi: 10.1093/sleep/zsaa106

Estimating daytime sleepiness with previous night EEG, EOG and EMG spectrograms in patients with suspected sleep apnea using a convolutional neural network

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

Past funding

  • 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
  • 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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