PhD Riku Klén - UTU Research Portal

Riku Klén
PhD

- Associate Professor,
Turku PET Centre (Independent units)

riku.klen@utu.fi

+358 0 231 3048

Kiinamyllynkatu 4-8

Turku

http://users.utu.fi/ripekl/

Medical imaging, imaging instrumentation, machine learning, longitudinal analysis, geometric function theory, hyperbolic type geometries, quasiconformal mappings

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Dimension of the boundary in different metrics (2013)
- Mathematica Scandinavica
Klen R, Suomala V
Inclusion relations of hyperbolic type metric balls II (2013)
- Publicationes Mathematicae Debrecen
Klen R, Vuorinen M
Local convexity properties of balls in Apollonian and Seittenranta's metrics (2013)
- Conformal Geometry and Dynamics
Riku Klén
Subdomain geometry of hyperbolic type metrics (2013)
- Transactions of the Institute of Mathematics of the National Academy of Sciences of Ukraine
R Klén, Y Li, M Vuorinen
Inclusion relations of hyperbolic type metric balls (2012)
- Publicationes Mathematicae Debrecen
Klen R, Vuorinen M
Apollonian circles and hyperbolic geometry (2011)
- Journal of Analysis
Riku Klén, Matti Vuorinen
Coronary plaque imaging in patients with unstable angina pectoris using dual gated [18F]-FDG PET/CT (2011)
- European Heart Journal Supplements
Lankinen E, Saraste A, Noponen T, Klen R, Teras M, Kokki T, Kajander S, Pietila M, Ukkonen H, Knuuti J
CLOSE-TO-CONVEXITY OF QUASIHYPERBOLIC AND j-METRIC BALLS (2010)
- Annales Academiae Scientiarum Fennicae. Mathematica
Klén Riku
Dual gated PET/CT imaging of small targets of the heart: Method description and testing with a dynamic heart phantom (2010)
- Journal of Nuclear Cardiology
Kokki T, Sipila HT, Teras M, Noponen T, Durand-Schaefer N, Klen R, Knuuti J
On Jordan Type Inequalities for Hyperbolic Functions (2010)
- Journal of Inequalities and Applications
Klen R, Visuri M, Vuorinen M
Quasihyperbolic Geometry in Euclidean and Banach Spaces (2010)
- Journal of Analysis
Klén Riku, Rasila Antti, Talponen Jarno
On hyperbolic type metrics (2009) Klén Riku