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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

381 - 400 of 406 works

2004

Journal Article

Ultrasonic quantitation of superficial degradation of articular cartilage

Saarakkala, Simo, Töyräs, Juha, Hirvonen, Jani, Laasanen, Mikko S., Lappalainen, Reijo and Jurvelin, Jukka S. (2004). Ultrasonic quantitation of superficial degradation of articular cartilage. Ultrasound in Medicine and Biology, 30 (6), 783-792. doi: 10.1016/j.ultrasmedbio.2004.03.005

Ultrasonic quantitation of superficial degradation of articular cartilage

2004

Journal Article

Proteoglycan and collagen sensitive MRI evaluation of normal and degenerated articular cartilage

Nissi, M. J., Töyräs, J., Laasanen, M. S., Rieppo, J., Saarakkala, S., Lappalainen, R., Jurvelin, J. S. and Nieminen, M. T. (2004). Proteoglycan and collagen sensitive MRI evaluation of normal and degenerated articular cartilage. Journal of Orthopaedic Research, 22 (3), 557-564. doi: 10.1016/j.orthres.2003.09.008

Proteoglycan and collagen sensitive MRI evaluation of normal and degenerated articular cartilage

2004

Journal Article

Ultrasound attenuation in normal and spontaneously degenerated articular cartilage

Nieminen, Heikki J., Saarakkala, Simo, Laasanen, Mikko S., Hirvonen, Jani, Jurvelin, Jukka S. and Töyräs, Juha (2004). Ultrasound attenuation in normal and spontaneously degenerated articular cartilage. Ultrasound in Medicine and Biology, 30 (4), 493-500. doi: 10.1016/j.ultrasmedbio.2003.12.007

Ultrasound attenuation in normal and spontaneously degenerated articular cartilage

2004

Journal Article

Prediction of biomechanical properties of articular cartilage with quantitative magnetic resonance imaging

Nieminen, Miika T., Töyräs, Juha, Laasanen, Mikko S., Silvennoinen, Johanna, Helminen, Heikki J. and Jurvelin, Jukka S. (2004). Prediction of biomechanical properties of articular cartilage with quantitative magnetic resonance imaging. Journal of Biomechanics, 37 (3), 321-328. doi: 10.1016/S0021-9290(03)00291-4

Prediction of biomechanical properties of articular cartilage with quantitative magnetic resonance imaging

2003

Journal Article

Structure-function relationships in enzymatically modified articular cartilage

Rieppo, Jarno, Töyräs, Juha, Nieminen, Miika T., Kovanen, Vuokko, Hyttinen, Mika M., Korhonen, Rami K., Jurvelin, Jukka S. and Helminen, Heikki J. (2003). Structure-function relationships in enzymatically modified articular cartilage. Cells Tissues Organs, 175 (3), 121-132. doi: 10.1159/000074628

Structure-function relationships in enzymatically modified articular cartilage

2003

Journal Article

Fibril reinforced poroelastic model predicts specifically mechanical behavior of normal, proteoglycan depleted and collagen degraded articular cartilage

Korhonen, Rami K., Laasanen, Mikko S., Töyräs, Juha, Lappalainen, Reijo, Helminen, Heikki J. and Jurvelin, Jukka S. (2003). Fibril reinforced poroelastic model predicts specifically mechanical behavior of normal, proteoglycan depleted and collagen degraded articular cartilage. Journal of Biomechanics, 36 (9), 1373-1379. doi: 10.1016/S0021-9290(03)00069-1

Fibril reinforced poroelastic model predicts specifically mechanical behavior of normal, proteoglycan depleted and collagen degraded articular cartilage

2003

Journal Article

Ultrasound indentation of bovine knee articular cartilage in situ

Laasanen, Mikko S., Saarakkala, Simo, Töyräs, Juha, Hirvonen, Jani, Rieppo, Jarno, Korhonen, Rami K. and Jurvelin, Jukka S. (2003). Ultrasound indentation of bovine knee articular cartilage in situ. Journal of Biomechanics, 36 (9), 1259-1267. doi: 10.1016/S0021-9290(03)00163-5

Ultrasound indentation of bovine knee articular cartilage in situ

2003

Journal Article

Ultrasound indentation of normal and spontaneously degenerated bovine articular cartilage

Saarakkala, S., Laasanen, M. S., Jurvelin, J. S., Törrönen, K., Lammi, M. J., Lappalainen, R. and Töyräs, J. (2003). Ultrasound indentation of normal and spontaneously degenerated bovine articular cartilage. Osteoarthritis and Cartilage, 11 (9), 697-705. doi: 10.1016/S1063-4584(03)00154-7

Ultrasound indentation of normal and spontaneously degenerated bovine articular cartilage

2003

Journal Article

Dual energy x-ray laser measurement of calcaneal bone mineral density

Hakulinen, M. A., Saarakkala, S., Töyräs, J., Kröger, H. and Jurvelin, J. S. (2003). Dual energy x-ray laser measurement of calcaneal bone mineral density. Physics in Medicine and Biology, 48 (12), 1741-1752. doi: 10.1088/0031-9155/48/12/305

Dual energy x-ray laser measurement of calcaneal bone mineral density

2003

Journal Article

Experimental and numerical validation for the novel configuration of an arthroscopic indentation instrument

Korhonen, Rami K., Saarakkala, Simo, Töyräs, Juha, Laasanen, Mikko S., Kiviranta, Ilkka and Jurvelin, Jukka S. (2003). Experimental and numerical validation for the novel configuration of an arthroscopic indentation instrument. Physics in Medicine and Biology, 48 (11), 1565-1576. doi: 10.1088/0031-9155/48/11/306

Experimental and numerical validation for the novel configuration of an arthroscopic indentation instrument

2003

Journal Article

Electrical and dielectric properties of bovine trabecular bone - Relationships with mechanical properties and mineral density

Sierpowska, Joanna, Töyräs, J., Hakulinen, M. A., Saarakkala, S., Jurvelin, J. S. and Lappalainen, R. (2003). Electrical and dielectric properties of bovine trabecular bone - Relationships with mechanical properties and mineral density. Physics in Medicine and Biology, 48 (6), 775-786. doi: 10.1088/0031-9155/48/6/306

Electrical and dielectric properties of bovine trabecular bone - Relationships with mechanical properties and mineral density

2003

Journal Article

Speed of sound in normal and degenerated bovine articular cartilage

Töyräs, Juha, Laasanen, Mikko S., Saarakkala, Simo, Lammi, Mikko J., Rieppo, Jarno, Kurkijärvi, Jatta, Lappalainen, Reijo and Jurvelin, Jukka S. (2003). Speed of sound in normal and degenerated bovine articular cartilage. Ultrasound in Medicine and Biology, 29 (3), 447-454. doi: 10.1016/S0301-5629(02)00708-1

Speed of sound in normal and degenerated bovine articular cartilage

2003

Conference Publication

Mechano-acoustic diagnostic of cartilage degeneration and repair

Laasanen, Mikko S., Töyräs, Juha, Vasara, Anna I., Hyttinen, Mika M., Saarakkala, Simo, Hirvonen, Jani, Jurvelin, Jukka S. and Kiviranta, Ilkka (2003). Mechano-acoustic diagnostic of cartilage degeneration and repair. Journal of Bone and Joint Surgery Inc.. doi: 10.2106/00004623-200300002-00010

Mechano-acoustic diagnostic of cartilage degeneration and repair

2002

Journal Article

Bone mineral density, ultrasound velocity, and broadband attenuation predict mechanical properties of trabecular bone differently

Töyräs, J., Nieminen, M. T., Kröger, H. and Jurvelin, J. S. (2002). Bone mineral density, ultrasound velocity, and broadband attenuation predict mechanical properties of trabecular bone differently. Bone, 31 (4), 503-507. doi: 10.1016/S8756-3282(02)00843-8

Bone mineral density, ultrasound velocity, and broadband attenuation predict mechanical properties of trabecular bone differently

2002

Journal Article

Spatial assessment of articular cartilage proteoglycans with Gd-DTPA-enhanced T1 imaging

Nieminen, Miika T., Rieppo, Jarno, Silvennoinen, Johanna, Töyräs, Juha, Hakumäki, Juhana M., Hyttinen, Mika M., Helminen, Heikki J. and Jurvelin, Jukka S. (2002). Spatial assessment of articular cartilage proteoglycans with Gd-DTPA-enhanced T1 imaging. Magnetic Resonance in Medicine, 48 (4), 640-648. doi: 10.1002/mrm.10273

Spatial assessment of articular cartilage proteoglycans with Gd-DTPA-enhanced T1 imaging

2002

Journal Article

Novel mechano-acoustic technique and instrument for diagnosis of cartilage degeneration

Laasanen, M. S., Töyräs, J., Hirvonen, J., Saarakkala, S., Korhonen, R. K., Nieminen, M. T., Kiviranta, I. and Jurvelin, J. S. (2002). Novel mechano-acoustic technique and instrument for diagnosis of cartilage degeneration. Physiological Measurement, 23 (3) 302, 491-503. doi: 10.1088/0967-3334/23/3/302

Novel mechano-acoustic technique and instrument for diagnosis of cartilage degeneration

2002

Journal Article

Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation

Korhonen, R. K., Laasanen, M. S., Töyräs, J., Rieppo, J., Hirvonen, J., Helminen, H. J. and Jurvelin, J. S. (2002). Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation. Journal of Biomechanics, 35 (7), 903-909. doi: 10.1016/S0021-9290(02)00052-0

Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation

2002

Journal Article

Real-time ultrasound analysis of articular cartilage degradation in vitro

Nieminen, Heikki J., Töyräs, Juha, Rieppo, Jarno, Nieminen, Miika T., Hirvonen, Jani, Korhonen, Rami and Jurvelin, Jukka S. (2002). Real-time ultrasound analysis of articular cartilage degradation in vitro. Ultrasound in Medicine and Biology, 28 (4), 519-525. doi: 10.1016/S0301-5629(02)00480-5

Real-time ultrasound analysis of articular cartilage degradation in vitro

2002

Conference Publication

Ultrasonic characterization of articular cartilage

Töyräs, J, Nieminen, H J, Laasanen, M S, Nieminen, M T, Korhonen, R K, Rieppo, J, Hirvonen, J, Helminen, H J and Jurvelin, J S (2002). Ultrasonic characterization of articular cartilage.

Ultrasonic characterization of articular cartilage

2001

Journal Article

T2 relaxation reveals spatial collagen architecture in articular cartilage: A comparative quantitative MRI and polarized light microscopic study

Nieminen, Miika T., Rieppo, Jarno, Töyräs, Juha, Hakumäki, Juhana M., Silvennoinen, Johanna, Hyttinen, Mika M., Helminen, Heikki J. and Jurvelin, Jukka S. (2001). T2 relaxation reveals spatial collagen architecture in articular cartilage: A comparative quantitative MRI and polarized light microscopic study. Magnetic Resonance in Medicine, 46 (3), 487-493. doi: 10.1002/mrm.1218

T2 relaxation reveals spatial collagen architecture in articular cartilage: A comparative quantitative MRI and polarized light microscopic study

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

  • Doctor Philosophy

    Artifical intelligence approaches for diagnosing and phenotyping sleep disorders

    Associate Advisor

    Other advisors: Associate Professor Philip Terrill

  • Doctor Philosophy

    Delirium in hospital. Challenging times call for digital measures.

    Associate Advisor

    Other advisors: Dr Peter Worthy, Professor Nadeeka Dissanayaka

  • Doctor Philosophy

    Understanding the Interaction of light with biological tissues: a computational modelling approach

    Associate Advisor

  • Doctor Philosophy

    Deep Learning Methods Towards Reliable and Physiology-Aligned Sleep Scoring

    Associate Advisor

    Other advisors: Associate Professor Philip Terrill

Completed supervision

Media

Enquiries

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