
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
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.
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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Doctor Philosophy
Delirium in hospital. Challenging times call for digital measures.
Associate Advisor
Other advisors: Dr Peter Worthy, Professor Nadeeka Dissanayaka
-
Doctor Philosophy
Raman spectroscopy for diagnostic tissue assessment
Associate Advisor
Other advisors: Dr Jari Torniainen, Professor Aleksandar Rakic
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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
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
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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