
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
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
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
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
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
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
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
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
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
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
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
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.
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
2001
Journal Article
Inactivation of one allele of the type II collagen gene alters the collagen network in murine articular cartilage and makes cartilage softer
Hyttinen, M. M., Töyräs, J., Lapveteläinen, T., Lindblom, J., Prockop, D. J., Li, S. W., Arita, M., Jurvelin, J. S. and Helminen, H. J. (2001). Inactivation of one allele of the type II collagen gene alters the collagen network in murine articular cartilage and makes cartilage softer. Annals of the Rheumatic Diseases, 60 (3), 262-268. doi: 10.1136/ard.60.3.262
2001
Journal Article
Estimation of the Young's modulus of articular cartilage using an arthroscopic indentation instrument and ultrasonic measurement of tissue thickness
Töyräs, J., Lyyra-Laitinen, T., Niinimäki, M., Lindgren, R., Nieminen, M. T., Kiviranta, I. and Jurvelin, J. S. (2001). Estimation of the Young's modulus of articular cartilage using an arthroscopic indentation instrument and ultrasonic measurement of tissue thickness. Journal of Biomechanics, 34 (2), 251-256. doi: 10.1016/S0021-9290(00)00189-5
2000
Journal Article
Quantitative MR microscopy of enzymatically degraded articular cartilage
Nieminen, Miika T., Töyräs, Juha, Rieppo, Jarno, Hakumäki, Juhana M., Silvennoinen, Johanna, Helminen, Heikki J. and Jurvelin, Jukka S. (2000). Quantitative MR microscopy of enzymatically degraded articular cartilage. Magnetic Resonance in Medicine, 43 (5), 676-681. doi: 10.1002/(SICI)1522-2594(200005)43:53.0.CO;2-X
1999
Journal Article
Bone properties as estimated by mineral density, ultrasound attenuation, and velocity
Töyräs, J., Kröger, H. and Jurvelin, J. S. (1999). Bone properties as estimated by mineral density, ultrasound attenuation, and velocity. Bone, 25 (6), 725-731. doi: 10.1016/S8756-3282(99)00221-5
1999
Journal Article
Optimization of the arthroscopic indentation instrument for the measurement of thin cartilage stiffness
Lyyra-Laitinen, Tiina, Niinimäki, Mia, Töyräs, Juha, Lindgren, Reijo, Kiviranta, Ilkka and Jurvelin, Jukka S. (1999). Optimization of the arthroscopic indentation instrument for the measurement of thin cartilage stiffness. Physics in Medicine and Biology, 44 (10), 2511-2524. doi: 10.1088/0031-9155/44/10/310
1999
Journal Article
Characterization of enzymatically induced degradation of articular cartilage using high frequency ultrasound
Töyräs, J., Rieppo, J., Nieminen, M. T., Helminen, H. J. and Jurvelin, J. S. (1999). Characterization of enzymatically induced degradation of articular cartilage using high frequency ultrasound. Physics in Medicine and Biology, 44 (11), 2723-2733. doi: 10.1088/0031-9155/44/11/303
Supervision
Availability
- Professor Juha Toyras is:
- Available for supervision
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Supervision history
Current supervision
-
Doctor Philosophy
Artificial intelligence and mechanistic physiology approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Dwayne Mann, Associate Professor Philip Terrill
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Integrating Wearable Devices into the Patient-Centred Digital Healthcare Environment
Associate Advisor
Other advisors: Associate Professor Chelsea Dobbins
-
Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Professor Gerard Byrne, Dr Peter Worthy, Professor Nadeeka Dissanayaka
-
Doctor Philosophy
New deep learning based methods for assessment of sleep apnea severity and risk of related short and long term health consequences
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Artifical intelligence approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
New deep learning based methods for assessment of sleep apnea severity and risk of related short and long term health consequences
Associate Advisor
Other advisors: Dr Shakes Chandra, Associate Professor Philip Terrill
-
Doctor Philosophy
Artificial intelligence and mechanistic physiology approaches for diagnosing and phenotyping sleep disorders
Associate Advisor
Other advisors: Dr Dwayne Mann, 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
-
Doctor Philosophy
Adaptation of Raman spectroscopy for diagnostic assessment of connective tissue integrity
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
-
Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
Completed supervision
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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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