Skip to menu Skip to content Skip to footer
Professor Juha Toyras
Professor

Juha Toyras

Email: 

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

399 works between 1999 and 2025

321 - 340 of 399 works

2010

Conference Publication

Repair of osteochondral defects with recombinant human type II collagen gel and autologous chondrocytes in a rabbit model

Pulkkinen, H., Tiitu, V., Valonen, P., Silvast, T. S., Jurvelin, J. S., Töyräs, J., Kiviranta, I. and Lammi, M. J. (2010). Repair of osteochondral defects with recombinant human type II collagen gel and autologous chondrocytes in a rabbit model. AO Research Institute Davos.

Repair of osteochondral defects with recombinant human type II collagen gel and autologous chondrocytes in a rabbit model

2009

Journal Article

Diffusion and near-equilibrium distribution of MRI and CT contrast agents in articular cartilage

Silvast, Tuomo S., Kokkonen, Harri T., Jurvelin, Jukka S., Quinn, Thomas M., Nieminen, Miika T. and Töyräs, Juha (2009). Diffusion and near-equilibrium distribution of MRI and CT contrast agents in articular cartilage. Physics in Medicine and Biology, 54 (22), 6823-6836. doi: 10.1088/0031-9155/54/22/005

Diffusion and near-equilibrium distribution of MRI and CT contrast agents in articular cartilage

2009

Conference Publication

Ultrasound backscattering outperforms the clinically used ultrasound parameters in discrimination of osteoporotic-like human trabecular bone samples

Karjalainen, J., Töyräs, J., Riekkinen, O. and Hakulinen, M. A. (2009). Ultrasound backscattering outperforms the clinically used ultrasound parameters in discrimination of osteoporotic-like human trabecular bone samples. World Congress on Medical Physics and Biomedical Engineering: Diagnostic Imaging, , , September 7, 2009-September 12, 2009. Springer Verlag. doi: 10.1007/978-3-642-03879-2-27

Ultrasound backscattering outperforms the clinically used ultrasound parameters in discrimination of osteoporotic-like human trabecular bone samples

2009

Journal Article

Simultaneous computed tomography of articular cartilage and subchondral bone

Aula, A. S., Jurvelin, J. S. and Töyräs, J. (2009). Simultaneous computed tomography of articular cartilage and subchondral bone. Osteoarthritis and Cartilage, 17 (12), 1583-1588. doi: 10.1016/j.joca.2009.06.010

Simultaneous computed tomography of articular cartilage and subchondral bone

2009

Journal Article

Minimally Invasive Ultrasound Method for Intra-Articular Diagnostics of Cartilage Degeneration

Virén, T., Saarakkala, S., Kaleva, E., Nieminen, H. J., Jurvelin, J. S. and Töyräs, J. (2009). Minimally Invasive Ultrasound Method for Intra-Articular Diagnostics of Cartilage Degeneration. Ultrasound in Medicine and Biology, 35 (9), 1546-1554. doi: 10.1016/j.ultrasmedbio.2009.04.004

Minimally Invasive Ultrasound Method for Intra-Articular Diagnostics of Cartilage Degeneration

2009

Journal Article

Differences in Acoustic Properties of Intact and Degenerated Human Patellar Cartilage During Compression

Kiviranta, Panu, Lammentausta, Eveliina, Töyräs, Juha, Nieminen, Heikki J., Julkunen, Petro, Kiviranta, Ilkka and Jurvelin, Jukka S. (2009). Differences in Acoustic Properties of Intact and Degenerated Human Patellar Cartilage During Compression. Ultrasound in Medicine and Biology, 35 (8), 1367-1375. doi: 10.1016/j.ultrasmedbio.2009.03.003

Differences in Acoustic Properties of Intact and Degenerated Human Patellar Cartilage During Compression

2009

Journal Article

Effects of Ultrasound Beam Angle and Surface Roughness on the Quantitative Ultrasound Parameters of Articular Cartilage

Kaleva, E., Saarakkala, S., Jurvelin, J. S., Virén, T. and Töyräs, J. (2009). Effects of Ultrasound Beam Angle and Surface Roughness on the Quantitative Ultrasound Parameters of Articular Cartilage. Ultrasound in Medicine and Biology, 35 (8), 1344-1351. doi: 10.1016/j.ultrasmedbio.2009.03.009

Effects of Ultrasound Beam Angle and Surface Roughness on the Quantitative Ultrasound Parameters of Articular Cartilage

2009

Journal Article

Ultrasound Backscatter Imaging Provides Frequency-Dependent Information on Structure, Composition and Mechanical Properties of Human Trabecular Bone

Karjalainen, Janne P., Töyräs, Juha, Riekkinen, Ossi, Hakulinen, Mikko and Jurvelin, Jukka S. (2009). Ultrasound Backscatter Imaging Provides Frequency-Dependent Information on Structure, Composition and Mechanical Properties of Human Trabecular Bone. Ultrasound in Medicine and Biology, 35 (8), 1376-1384. doi: 10.1016/j.ultrasmedbio.2009.03.011

Ultrasound Backscatter Imaging Provides Frequency-Dependent Information on Structure, Composition and Mechanical Properties of Human Trabecular Bone

2009

Journal Article

Effects of ultrasound frequency, temporal sampling frequency, and spatial sampling step on the quantitative ultrasound parameters of articular cartilage

Kaleva, Erna, Töyräs, Juha, Jurvelin, Jukka S., Virén, Tuomas and Saarakkala, Simo (2009). Effects of ultrasound frequency, temporal sampling frequency, and spatial sampling step on the quantitative ultrasound parameters of articular cartilage. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 56 (7) 5116864, 1383-1393. doi: 10.1109/TUFFC.2009.1194

Effects of ultrasound frequency, temporal sampling frequency, and spatial sampling step on the quantitative ultrasound parameters of articular cartilage

2009

Journal Article

Accuracy of automatic analysis of ambulatory recordings of nocturnal breathing disorders is significantly instrumentation dependent

Tiihonen, P., Hukkanen, T., Tuomilehto, H., Mervaala, E., Paakkonen, A. and Toyras, J. (2009). Accuracy of automatic analysis of ambulatory recordings of nocturnal breathing disorders is significantly instrumentation dependent. Journal of Medical Engineering and Technology, 33 (5), 386-393. doi: 10.1080/03091900902739999

Accuracy of automatic analysis of ambulatory recordings of nocturnal breathing disorders is significantly instrumentation dependent

2009

Journal Article

Strain-Dependent Modulation of Ultrasound Speed in Articular Cartilage Under Dynamic Compression

Lötjönen, Pauno, Julkunen, Petro, Töyräs, Juha, Lammi, Mikko J., Jurvelin, Jukka S. and Nieminen, Heikki J. (2009). Strain-Dependent Modulation of Ultrasound Speed in Articular Cartilage Under Dynamic Compression. Ultrasound in Medicine and Biology, 35 (7), 1177-1184. doi: 10.1016/j.ultrasmedbio.2009.03.002

Strain-Dependent Modulation of Ultrasound Speed in Articular Cartilage Under Dynamic Compression

2009

Journal Article

Fabrication and testing of polyimide-based microelectrode arrays for cortical mapping of evoked potentials

Myllymaa, Sami, Myllymaa, Katja, Korhonen, Hannu, Töyräs, Juha, Jääskeläinen, Juha E., Djupsund, Kaj, Tanila, Heikki and Lappalainen, Reijo (2009). Fabrication and testing of polyimide-based microelectrode arrays for cortical mapping of evoked potentials. Biosensors and Bioelectronics, 24 (10), 3067-3072. doi: 10.1016/j.bios.2009.03.028

Fabrication and testing of polyimide-based microelectrode arrays for cortical mapping of evoked potentials

2009

Journal Article

Evaluation of a novel ambulatory device for screening of sleep apnea

Tiihonen, Pekka, Hukkanen, Taina, Tuomilehto, Henri, Mervaala, Esa and Töyräs, Juha (2009). Evaluation of a novel ambulatory device for screening of sleep apnea. Telemedicine and e-Health, 15 (3), 283-289. doi: 10.1089/tmj.2008.0118

Evaluation of a novel ambulatory device for screening of sleep apnea

2009

Journal Article

Contrast agent-enhanced computed tomography of articular cartilage: Association with tissue composition and properties

Silvast, T. S., Jurvelin, J. S., Aula, A. S., Lammi, M. J. and Toyras, J. (2009). Contrast agent-enhanced computed tomography of articular cartilage: Association with tissue composition and properties. Acta Radiologica, 50 (1), 78-85. doi: 10.1080/02841850802572526

Contrast agent-enhanced computed tomography of articular cartilage: Association with tissue composition and properties

2009

Journal Article

Effect of Bone Marrow on Acoustic Properties of Trabecular Bone - 3D Finite Difference Modeling Study

Aula, A. S., Töyräs, J., Hakulinen, M. A. and Jurvelin, J. S. (2009). Effect of Bone Marrow on Acoustic Properties of Trabecular Bone - 3D Finite Difference Modeling Study. Ultrasound in Medicine and Biology, 35 (2), 308-318. doi: 10.1016/j.ultrasmedbio.2008.08.002

Effect of Bone Marrow on Acoustic Properties of Trabecular Bone - 3D Finite Difference Modeling Study

2009

Journal Article

Quantitative assessment of articular cartilage using high-frequency ultrasound: Research findings and diagnostic prospects

Nieminen, Heikki J., Zheng, Y. P., Saarakkala, S., Wang, Q., Töyräs, J., Huang, Y. P. and Jurvelin, J. S. (2009). Quantitative assessment of articular cartilage using high-frequency ultrasound: Research findings and diagnostic prospects. Critical Reviews in Biomedical Engineering, 37 (6), 461-494. doi: 10.1615/CritRevBiomedEng.v37.i6.20

Quantitative assessment of articular cartilage using high-frequency ultrasound: Research findings and diagnostic prospects

2009

Journal Article

Design, construction and evaluation of an ambulatory device for screening of sleep apnea

Tiihonen, Pekka, Päkkönen, A., Mervaala, E., Hukkanen, T. and Töyräs, J. (2009). Design, construction and evaluation of an ambulatory device for screening of sleep apnea. Medical and Biological Engineering and Computing, 47 (1), 59-66. doi: 10.1007/s11517-008-0418-8

Design, construction and evaluation of an ambulatory device for screening of sleep apnea

2009

Journal Article

pQCT study on diffusion and equilibrium distribution of iodinated anionic contrast agent in human articular cartilage - associations to matrix composition and integrity

Silvast, T. S., Jurvelin, J. S., Lammi, M. J. and Töyräs, J. (2009). pQCT study on diffusion and equilibrium distribution of iodinated anionic contrast agent in human articular cartilage - associations to matrix composition and integrity. Osteoarthritis and Cartilage, 17 (1), 26-32. doi: 10.1016/j.joca.2008.05.012

pQCT study on diffusion and equilibrium distribution of iodinated anionic contrast agent in human articular cartilage - associations to matrix composition and integrity

2008

Journal Article

Dual-frequency ultrasound technique minimizes errors induced by soft tissue in ultrasound bone densitometry

Karjalainen, J., Töyräs, J., Rikkonen, T., Jurvelin, J. S. and Riekkinen, O. (2008). Dual-frequency ultrasound technique minimizes errors induced by soft tissue in ultrasound bone densitometry. Acta Radiologica, 49 (9), 1038-1041. doi: 10.1080/02841850802325982

Dual-frequency ultrasound technique minimizes errors induced by soft tissue in ultrasound bone densitometry

2008

Journal Article

Dual-Frequency Ultrasound-New Pulse-Echo Technique for Bone Densitometry

Riekkinen, O., Hakulinen, M. A., Töyräs, J. and Jurvelin, J. S. (2008). Dual-Frequency Ultrasound-New Pulse-Echo Technique for Bone Densitometry. Ultrasound in Medicine and Biology, 34 (10), 1703-1708. doi: 10.1016/j.ultrasmedbio.2008.03.018

Dual-Frequency Ultrasound-New Pulse-Echo Technique for Bone Densitometry

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

Before you email them, read our advice on how to contact a supervisor.

Supervision history

Current supervision

Completed supervision

Media

Enquiries

For media enquiries about Professor Juha Toyras's areas of expertise, story ideas and help finding experts, contact our Media team:

communications@uq.edu.au