
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
2017
Journal Article
Regular chondrocyte spacing is a potential cause for coherent ultrasound backscatter in human articular cartilage
Rohrbach, Daniel, Inkinen, Satu I., Zatloukalová, Jana, Kadow-Romacker, Anke, Joukainen, Antti, Malo, Markus K., Mamou, Jonathan, Töyräs, Juha and Raum, Kay (2017). Regular chondrocyte spacing is a potential cause for coherent ultrasound backscatter in human articular cartilage. Journal of the Acoustical Society of America, 141 (5), 3105-3116. doi: 10.1121/1.4979339
2017
Journal Article
Amsterdam positional OSA classification: the AASM 2012 recommended hypopnoea criteria increases the number of positional therapy candidates
Duce, Brett, Kulkas, Antti, Langton, Christian, Töyräs, Juha and Hukins, Craig (2017). Amsterdam positional OSA classification: the AASM 2012 recommended hypopnoea criteria increases the number of positional therapy candidates. Sleep and Breathing, 21 (2), 411-417. doi: 10.1007/s11325-016-1432-y
2017
Journal Article
Solute transport of negatively charged contrast agents across articular surface of injured cartilage
Kokkonen, H. T., Chin, H. C., Töyräs, J., Jurvelin, J. S. and Quinn, T. M. (2017). Solute transport of negatively charged contrast agents across articular surface of injured cartilage. Annals of Biomedical Engineering, 45 (4), 973-981. doi: 10.1007/s10439-016-1756-6
2017
Journal Article
Vibrational spectroscopy of articular cartilage
Rieppo, Lassi, Töyräs, Juha and Saarakkala, Simo (2017). Vibrational spectroscopy of articular cartilage. Applied Spectroscopy Reviews, 52 (3), 249-266. doi: 10.1080/05704928.2016.1226182
2017
Journal Article
Infrared microspectroscopic determination of collagen cross-links in articular cartilage
Rieppo, Lassi, Kokkonen, Harri T., Kulmala, Katariina A.M., Kovanen, Vuokko, Lammi, Mikko J., Töyräs, Juha and Saarakkala, Simo (2017). Infrared microspectroscopic determination of collagen cross-links in articular cartilage. Journal of Biomedical Optics, 22 (3) 035007, 035007. doi: 10.1117/1.JBO.22.3.035007
2017
Journal Article
Structure-function relationships of human meniscus
Danso, Elvis K., Oinas, Joonas M.T., Saarakkala, Simo, Mikkonen, Santtu, Töyräs, Juha and Korhonen, Rami K. (2017). Structure-function relationships of human meniscus. Journal of the Mechanical Behavior of Biomedical Materials, 67, 51-60. doi: 10.1016/j.jmbbm.2016.12.002
2017
Journal Article
In Vivo contrast-enhanced cone beam CT provides quantitative information on articular cartilage and subchondral bone
Myller, Katariina A. H., Turunen, Mikael J., Honkanen, Juuso T. J., Väänänen, Sami P., Iivarinen, Jarkko T., Salo, Jari, Jurvelin, Jukka S. and Töyräs, Juha (2017). In Vivo contrast-enhanced cone beam CT provides quantitative information on articular cartilage and subchondral bone. Annals of Biomedical Engineering, 45 (3), 811-818. doi: 10.1007/s10439-016-1730-3
2017
Journal Article
Porosity predicted from ultrasound backscatter using multivariate analysis can improve accuracy of cortical bone thickness assessment
Eneh, Chibuzor T. M., Afara, Isaac O., Malo, Markus K. H., Jurvelin, Jukka S. and Töyräs, Juha (2017). Porosity predicted from ultrasound backscatter using multivariate analysis can improve accuracy of cortical bone thickness assessment. Journal of the Acoustical Society of America, 141 (1), 575-585. doi: 10.1121/1.4973572
2016
Journal Article
Assessment of the suitability of using a forehead EEG electrode set and chin EMG electrodes for sleep staging in polysomnography
Myllymaa, Sami, Muraja-Murro, Anu, Westeren-Punnonen, Susanna, Hukkanen, Taina, Lappalainen, Reijo, Mervaala, Esa, Töyräs, Juha, Sipilä, Kirsi and Myllymaa, Katja (2016). Assessment of the suitability of using a forehead EEG electrode set and chin EMG electrodes for sleep staging in polysomnography. Journal of Sleep Research, 25 (6), 636-645. doi: 10.1111/jsr.12425
2016
Journal Article
Quantitative evaluation of the mechanical risks caused by focal cartilage defects in the knee
Venäläinen, Mikko S., Mononen, Mika E., Salo, Jari, Räsänen, Lasse P., Jurvelin, Jukka S., Töyräs, Juha, Virén, Tuomas and Korhonen, Rami K. (2016). Quantitative evaluation of the mechanical risks caused by focal cartilage defects in the knee. Scientific Reports, 6 (1) 37538, 1-12. doi: 10.1038/srep37538
2016
Journal Article
Near infrared spectroscopic mapping of functional properties of equine articular cartilage
Sarin, Jaakko K., Amissah, Michael, Brommer, Harold, Argüelles, David, Töyräs, Juha and Afara, Isaac O. (2016). Near infrared spectroscopic mapping of functional properties of equine articular cartilage. Annals of Biomedical Engineering, 44 (11), 3335-3345. doi: 10.1007/s10439-016-1659-6
2016
Journal Article
The AASM 2012 recommended hypopnea criteria increase the incidence of obstructive sleep apnea but not the proportion of positional obstructive sleep apnea
Duce, Brett, Kulkas, Antti, Langton, Christian, Töyräs, Juha and Hukins, Craig (2016). The AASM 2012 recommended hypopnea criteria increase the incidence of obstructive sleep apnea but not the proportion of positional obstructive sleep apnea. Sleep Medicine, 26, 23-29. doi: 10.1016/j.sleep.2016.07.013
2016
Journal Article
Cationic contrast agent diffusion differs between cartilage and meniscus
Honkanen, Juuso T. J., Turunen, Mikael J., Freedman, Jonathan D., Saarakkala, Simo, Grinstaff, Mark W., Ylärinne, Janne H., Jurvelin, Jukka S. and Töyräs, Juha (2016). Cationic contrast agent diffusion differs between cartilage and meniscus. Annals of Biomedical Engineering, 44 (10), 2913-2921. doi: 10.1007/s10439-016-1629-z
2016
Journal Article
Optimal graft stiffness and pre-strain restore normal joint motion and cartilage responses in ACL reconstructed knee
Halonen, K. S., Mononen, M. E., Töyräs, J., Kröger, H., Joukainen, A. and Korhonen, R. K. (2016). Optimal graft stiffness and pre-strain restore normal joint motion and cartilage responses in ACL reconstructed knee. Journal of Biomechanics, 49 (13), 2566-2576. doi: 10.1016/j.jbiomech.2016.05.002
2016
Journal Article
Effect of collagen cross-linking on quantitative MRI parameters of articular cartilage
Rautiainen, J., Nieminen, M. T., Salo, E. N., Kokkonen, H. T., Mangia, S., Michaeli, S., Gröhn, O., Jurvelin, J. S., Töyräs, J. and Nissi, M. J. (2016). Effect of collagen cross-linking on quantitative MRI parameters of articular cartilage. Osteoarthritis and Cartilage, 24 (9), 1656-1664. doi: 10.1016/j.joca.2016.04.017
2016
Journal Article
Differences in acoustic impedance of fresh and embedded human trabecular bone samples - scanning acoustic microscopy and numerical evaluation
Ojanen, Xiaowei, Töyräs, Juha, Inkinen, Satu I., Malo, Markus K. H., Isaksson, Hanna and Jurvelin, Jukka S. (2016). Differences in acoustic impedance of fresh and embedded human trabecular bone samples - scanning acoustic microscopy and numerical evaluation. Journal of the Acoustical Society of America, 140 (3), 1931-1936. doi: 10.1121/1.4962347
2016
Journal Article
Phased-array ultrasound technology enhances accuracy of dual frequency ultrasound measurements – towards improved ultrasound bone diagnostics
Linder, Hans, Malo, Markus K. H., Liukkonen, Jukka, Jurvelin, Jukka S. and Töyräs, Juha (2016). Phased-array ultrasound technology enhances accuracy of dual frequency ultrasound measurements – towards improved ultrasound bone diagnostics. Journal of Medical Engineering and Technology, 40 (6), 293-297. doi: 10.1080/03091902.2016.1185472
2016
Journal Article
Optical coherence tomography enables accurate measurement of equine cartilage thickness for determination of speed of sound
Puhakka, Pia H, te Moller, Nikae C R, Tanska, Petri, Saarakkala, Simo, Tiitu, Virpi, Korhonen, Rami K, Brommer, Harold, Virén, Tuomas, Jurvelin, Jukka S and Töyräs, Juha (2016). Optical coherence tomography enables accurate measurement of equine cartilage thickness for determination of speed of sound. Acta Orthopaedica, 87 (4), 418-424. doi: 10.1080/17453674.2016.1180578
2016
Journal Article
Importance of patella, quadriceps forces, and depthwise cartilage structure on knee joint motion and cartilage response during gait
Halonen, K. S., Mononen, M. E., Jurvelin, J. S., Töyräs, J., Kłodowski, A., Kulmala, J. P. and Korhonen, R. K. (2016). Importance of patella, quadriceps forces, and depthwise cartilage structure on knee joint motion and cartilage response during gait. Journal of Biomechanical Engineering, 138 (7) 071002. doi: 10.1115/1.4033516
2016
Journal Article
In vivo evaluation of the potential of high-frequency ultrasound for arthroscopic examination of the shoulder joint
Puhakka, Jani, Afara, Isaac O., Paatela, Teemu, Sormaala, Markus J., Timonen, Matti A., Virén, Tuomas, Jurvelin, Jukka S., Töyräs, Juha and Kiviranta, Ilkka (2016). In vivo evaluation of the potential of high-frequency ultrasound for arthroscopic examination of the shoulder joint. Cartilage, 7 (3), 248-255. doi: 10.1177/1947603515617280
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: Dr Shakes Chandra, 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
Deep Learning Methods Towards Reliable and Physiology-Aligned Sleep Scoring
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Obstructive sleep apnoea pathophysiology phenotypes: associations with sleepiness and vigilance
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
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Doctor Philosophy
Understanding the Interaction of light with biological tissues: a computational modelling approach
Associate Advisor
Completed supervision
-
2025
Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
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2024
Doctor Philosophy
Integrating Wearable Devices into the Patient-Centred Digital Healthcare Environment
Associate Advisor
Other advisors: Associate Professor Chelsea Dobbins
Media
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