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Laboratory engineer

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Research Group



Tuomas Virén
Ph.D.
 

Personal information

Publications:

  1. Bhattarai A, ORCID: http://orcid.org/0000-0003-3713-1349, Honkanen JTJ, ORCID: http://orcid.org/0000-0002-9150-9253, Myller KAH, ORCID: http://orcid.org/0000-0001-8820-1322, Prakash M, ORCID: http://orcid.org/0000-0002-3853-4126, Korhonen M, ORCID: http://orcid.org/0000-0002-2548-4457, Saukko AEA, ORCID: http://orcid.org/0000-0001-8678-4675, Viren T, ORCID: http://orcid.org/0000-0002-7685-7911, Joukainen A, Patwa AN, Kroger H, ORCID: http://orcid.org/0000-0003-4245-8186, Grinstaff MW, ORCID: http://orcid.org/0000-0002-5453-3668, Jurvelin JS, Toyras J and ORCID: http://orcid.org/0000-0002-8035-1606. Quantitative Dual Contrast CT Technique for Evaluation of Articular Cartilage Properties. Ann Biomed Eng. 2018 Jul;46(7):1038-1046. doi: 10.1007/s10439-018-2013-y. Epub

  2. Viren T, ORCID: http://orcid.org/0000-0002-7685-7911, Iivarinen JT, Sarin JK, Harvima I and Mayrovitz HN. Accuracy and reliability of a hand-held in vivo skin indentation device to assess skin elasticity. Int J Cosmet Sci. 2018 Apr;40(2):134-140. doi: 10.1111/ics.12444. Epub 2018 Feb

  3. Joukainen A, Viren T, Penttila P, Liukkonen J, Puhakka PH, Kroger H and Toyras J. Ultrasound Arthroscopy of Hip in Treatment of Osteochondritis Dissecans. Arthrosc Tech. 2017 Jul 17;6(4):e1063-e1068. doi: 10.1016/j.eats.2017.03.022.

  4. Tugral A, Viren T and Bakar Y. Tissue dielectric constant and circumference measurement in the follow-up of treatment-related changes in lower-limb lymphedema. Int Angiol. 2018 Feb;37(1):26-31. doi: 10.23736/S0392-9590.17.03843-3. Epub 2017

  5. Viren T, Honkanen JT, Danso EK, Rieppo L, Korhonen RK and Toyras J. Ultrasound Assessment of Human Meniscus. Ultrasound Med Biol. 2017 Sep;43(9):1753-1763. doi:

  6. Koivumaki T, Tujunen J, Viren T, Heikkila J and Seppala J. Geometrical uncertainty of heart position in deep-inspiration breath-hold radiotherapy of left-sided breast cancer patients. Acta Oncol. 2017 Jun;56(6):879-883. doi: 10.1080/0284186X.2017.1298836. Epub 2017

  7. Venalainen MS, Mononen ME, Salo J, Rasanen LP, Jurvelin JS, Toyras J, Viren T and Korhonen RK. Quantitative Evaluation of the Mechanical Risks Caused by Focal Cartilage Defects in the Knee. Sci Rep. 2016 Nov 29;6:37538. doi: 10.1038/srep37538.

  8. Inkinen SI, Liukkonen J, Malo MK, Viren T, Jurvelin JS and Toyras J. Finite difference time domain model of ultrasound propagation in agarose scaffold containing collagen or chondrocytes. J Acoust Soc Am. 2016 Jul;140(1):1. doi: 10.1121/1.4953021.

  9. Puhakka J, Afara IO, Paatela T, Sormaala MJ, Timonen MA, Viren T, Jurvelin JS, Toyras J and Kiviranta I. In Vivo Evaluation of the Potential of High-Frequency Ultrasound for Arthroscopic Examination of the Shoulder Joint. Cartilage. 2016 Jul;7(3):248-55. doi: 10.1177/1947603515617280. Epub 2015 Nov 26.

  10. Puhakka PH, Te Moller NC, Tanska P, Saarakkala S, Tiitu V, Korhonen RK, Brommer H, Viren T, Jurvelin JS and Toyras J. Optical coherence tomography enables accurate measurement of equine cartilage thickness for determination of speed of sound. Acta Orthop. 2016 Aug;87(4):418-24. doi: 10.1080/17453674.2016.1180578. Epub 2016

  11. Venalainen MS, Mononen ME, Vaananen SP, Jurvelin JS, Toyras J, Viren T and Korhonen RK. Effect of bone inhomogeneity on tibiofemoral contact mechanics during physiological loading. J Biomech. 2016 May 3;49(7):1111-1120. doi: 10.1016/j.jbiomech.2016.02.033. Epub

  12. Penttila P, Liukkonen J, Joukainen A, Viren T, Jurvelin JS, Toyras J and Kroger H. Diagnosis of Knee Osteochondral Lesions With Ultrasound Imaging. Arthrosc Tech. 2015 Sep 14;4(5):e429-33. doi: 10.1016/j.eats.2015.04.002.

  13. Lahtinen T, Seppala J, Viren T and Johansson K. Experimental and Analytical Comparisons of Tissue Dielectric Constant (TDC) and Bioimpedance Spectroscopy (BIS) in Assessment of Early Arm Lymphedema in Breast Cancer Patients after Axillary Surgery and Radiotherapy. Lymphat Res Biol. 2015 Sep;13(3):176-85. doi: 10.1089/lrb.2015.0019. Epub 2015

  14. Puhakka PH, Te Moller NCR, Afara IO, Makela JTA, Tiitu V, Korhonen RK, Brommer H, Viren T, Jurvelin JS and Toyras J. Estimation of articular cartilage properties using multivariate analysis of optical coherence tomography signal. Osteoarthritis Cartilage. 2015 Dec;23(12):2206-2213. doi:

  15. Inkinen SI, Liukkonen J, Tiitu V, Viren T, Jurvelin JS and Toyras J. Ultrasound Backscattering Is Anisotropic in Bovine Articular Cartilage. Ultrasound Med Biol. 2015 Jul;41(7):1958-66. doi:

  16. Viren T, Heikkila J, Myllyoja K, Koskela K, Lahtinen T and Seppala J. Tangential volumetric modulated arc therapy technique for left-sided breast cancer radiotherapy. Radiat Oncol. 2015 Apr 8;10:79. doi: 10.1186/s13014-015-0392-x.

  17. Venalainen MS, Mononen ME, Jurvelin JS, Toyras J, Viren T and Korhonen RK. Importance of material properties and porosity of bone on mechanical response of articular cartilage in human knee joint--a two-dimensional finite element study. J Biomech Eng. 2014 Dec;136(12):121005. doi: 10.1115/1.4028801.

  18. Puhakka PH, Ylarinne JH, Lammi MJ, Saarakkala S, Tiitu V, Kroger H, Viren T, Jurvelin JS and Toyras J. Dependence of light attenuation and backscattering on collagen concentration and chondrocyte density in agarose scaffolds. Phys Med Biol. 2014 Nov 7;59(21):6537-48. doi: 10.1088/0031-9155/59/21/6537. Epub

  19. Liukkonen J, Lehenkari P, Hirvasniemi J, Joukainen A, Viren T, Saarakkala S, Nieminen MT, Jurvelin JS and Toyras J. Ultrasound arthroscopy of human knee cartilage and subchondral bone in vivo. Ultrasound Med Biol. 2014 Sep;40(9):2039-47. doi:

  20. Inkinen S, Liukkonen J, Ylarinne JH, Puhakka PH, Lammi MJ, Viren T, Jurvelin JS and Toyras J. Collagen and chondrocyte concentrations control ultrasound scattering in agarose scaffolds. Ultrasound Med Biol. 2014 Sep;40(9):2162-71. doi:

  21. Matikka H and Viren T. Radiation dose reduction in cone-beam computed tomography of extremities: evaluation of a novel radiation shield. J Radiol Prot. 2014 Jun;34(2):N57-63. doi: 10.1088/0952-4746/34/2/N57. Epub 2014

  22. Niemela T, Viren T, Liukkonen J, Arguelles D, te Moller NC, Puhakka PH, Jurvelin JS, Tulamo RM and Toyras J. Application of optical coherence tomography enhances reproducibility of arthroscopic evaluation of equine joints. Acta Vet Scand. 2014 Jan 10;56:3. doi: 10.1186/1751-0147-56-3.

  23. te Moller NC, Brommer H, Liukkonen J, Viren T, Timonen M, Puhakka PH, Jurvelin JS, van Weeren PR and Toyras J. Arthroscopic optical coherence tomography provides detailed information on articular cartilage lesions in horses. Vet J. 2013 Sep;197(3):589-95. doi: 10.1016/j.tvjl.2013.05.031. Epub 2013 Jun 28.

  24. Liukkonen J, Hirvasniemi J, Joukainen A, Penttila P, Viren T, Saarakkala S, Kroger H, Jurvelin JS and Toyras J. Arthroscopic ultrasound technique for simultaneous quantitative assessment of articular cartilage and subchondral bone: an in vitro and in vivo feasibility study. Ultrasound Med Biol. 2013 Aug;39(8):1460-8. doi:

  25. Viren T, Timonen M, Tyrvainen H, Tiitu V, Jurvelin JS and Toyras J. Ultrasonic evaluation of acute impact injury of articular cartilage in vitro. Osteoarthritis Cartilage. 2012 Jul;20(7):719-26. doi: 10.1016/j.joca.2012.03.018.

  26. Viren T, Huang YP, Saarakkala S, Pulkkinen H, Tiitu V, Linjama A, Kiviranta I, Lammi MJ, Brunott A, Brommer H, Van Weeren R, Brama PA, Zheng YP, Jurvelin JS and Toyras J. Comparison of ultrasound and optical coherence tomography techniques for evaluation of integrity of spontaneously repaired horse cartilage. J Med Eng Technol. 2012 Apr;36(3):185-92. doi: 10.3109/03091902.2012.663054.

  27. Kaleva E, Viren T, Saarakkala S, Sahlman J, Sirola J, Puhakka J, Paatela T, Kroger H, Kiviranta I, Jurvelin JS and Toyras J. Arthroscopic Ultrasound Assessment of Articular Cartilage in the Human Knee Joint: A Potential Diagnostic Method. Cartilage. 2011 Jul;2(3):246-53. doi: 10.1177/1947603510391781.

  28. Viren T, Saarakkala S, Tiitu V, Puhakka J, Kiviranta I, Jurvelin J and Toyras J. Ultrasound evaluation of mechanical injury of bovine knee articular cartilage under arthroscopic control. IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Jan;58(1):148-55. doi:

  29. Viren T, Saarakkala S, Jurvelin JS, Pulkkinen HJ, Tiitu V, Valonen P, Kiviranta I, Lammi MJ and Toyras J. Quantitative evaluation of spontaneously and surgically repaired rabbit articular cartilage using intra-articular ultrasound method in situ. Ultrasound Med Biol. 2010 May;36(5):833-9. doi:

  30. Kaleva E, Toyras J, Jurvelin JS, Viren T and Saarakkala S. Effects of ultrasound frequency, temporal sampling frequency, and spatial sampling step on the quantitative ultrasound parameters of articular cartilage. IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Jul;56(7):1383-93. doi:

  31. Viren T, Saarakkala S, Kaleva E, Nieminen HJ, Jurvelin JS and Toyras J. Minimally invasive ultrasound method for intra-articular diagnostics of cartilage degeneration. Ultrasound Med Biol. 2009 Sep;35(9):1546-54. doi:

  32. Kaleva E, Saarakkala S, Jurvelin JS, Viren T and Toyras J. Effects of ultrasound beam angle and surface roughness on the quantitative ultrasound parameters of articular cartilage. Ultrasound Med Biol. 2009 Aug;35(8):1344-51. doi:

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