Riku Klén
PhD
riku.klen@utu.fi +358 0 231 3048 Kiinamyllynkatu 4-8 Turku ORCID identifier: https://orcid.org/0000-0002-0982-8360 |
Areas of expertise
Medical imaging, imaging instrumentation, machine learning, longitudinal analysis, geometric function theory, hyperbolic type geometries, quasiconformal mappings
Medical imaging, imaging instrumentation, machine learning, longitudinal analysis, geometric function theory, hyperbolic type geometries, quasiconformal mappings
Publications 
5 of 6
- Some remarks on the Cassinian metric (2017)
- Publicationes Mathematicae Debrecen
(A1 Refereed original research article in a scientific journal) - Teichmüller's problem in space (2017)
- Journal of Mathematical Analysis and Applications
(A1 Refereed original research article in a scientific journal) - Volume growth of quasihyperbolic balls (2017)
- Sbornik: Mathematics
(A1 Refereed original research article in a scientific journal) - Balls in the Triangular Ratio Metric (2016) COMPLEX ANALYSIS AND DYNAMICAL SYSTEMS VI, PT 2: COMPLEX ANALYSIS, QUASICONFORMAL MAPPINGS, COMPLEX DYNAMICS Hokuni S, Klen R, Li Y, Vuorinen M
(A4 Refereed article in a conference publication ) - Evaluation of motion-correction methods for dual-gated cardiac positron emission tomography/computed tomography imaging (2016)
- Nuclear Medicine Communications
Kris Thielemans, Erika Hoppela, Hannu Sipilä, Mika Teräs, Juhani Knuuti
(A1 Refereed original research article in a scientific journal) - Generalized Orlicz spaces and related PDE (2016)
- Nonlinear Analysis: Theory, Methods and Applications
(A1 Refereed original research article in a scientific journal) - Geometric properties of φ-uniform domains (2016)
- Journal of Analysis
(A1 Refereed original research article in a scientific journal) - Linear relation between spirometric volume and the motion of cardiac structures: MRI and clinical PET study (2016)
- Journal of Nuclear Cardiology
(A1 Refereed original research article in a scientific journal) - On Isometries of Conformally Invariant Metrics (2016)
- Journal of Geometric Analysis
(A1 Refereed original research article in a scientific journal) - Solution of Two Conjectures of Klén, Lindén, Vuorinen and Wang (2016)
- Computational Methods and Function Theory
(A1 Refereed original research article in a scientific journal) - Convexity properties of generalized trigonometric and hyperbolic functions. (2015)
- Aequationes Mathematicae
(A1 Refereed original research article in a scientific journal) - Development of Motion Correction Methods for Cardiac PET Imaging (2015)
- European Journal of Nuclear Medicine and Molecular Imaging
(Other publication) - Examples of Fractals Satisfying the Quasihyperbolic Boundary Condition (2015)
- Australian Journal of Mathematical Analysis and Applications
(A1 Refereed original research article in a scientific journal) - Lipschitz conditions, triangular ratio metric, and quasiconformal maps (2015)
- Annales Academiae Scientiarum Fennicae. Mathematica
(A1 Refereed original research article in a scientific journal) - Analyysiä reaaliluvuilla (2014) Petteri Harjulehto, Riku Klén, Mika Koskenoja
(D5 Text book, professional manual or guide or dictionary ) - Bernoulli inequality and hypergeometric functions (2014)
- Proceedings of the American Mathematical Society
(A1 Refereed original research article in a scientific journal) - Inequalities for the generalized trigonometric and hyperbolic functions (2014)
- Journal of Mathematical Analysis and Applications
(A1 Refereed original research article in a scientific journal) - On the stability of φ-uniform domains [On the stability of phi-uniform domains] (2014)
- Monatshefte für Mathematik
(A1 Refereed original research article in a scientific journal) - Quasihyperbolic metric and möbius transformations (2014)
- Proceedings of the American Mathematical Society
(A1 Refereed original research article in a scientific journal) - The visual angle metric and Möbius transformations (2014)
- Computational Methods and Function Theory
(A1 Refereed original research article in a scientific journal)
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