Works matching AU Klén, Riku

Results: 46

Deep learning detects retropharyngeal edema on MRI in patients with acute neck infections.

Published in:

European Radiology Experimental, 2025, v. 9, n. 1, p. 1, doi. 10.1186/s41747-025-00599-6

By:

Rainio, Oona;
Huhtanen, Heidi;
Vierula, Jari-Pekka;
Nurminen, Janne;
Heikkinen, Jaakko;
Nyman, Mikko;
Klén, Riku;
Hirvonen, Jussi

Publication type:

Article

Plaque burden improves the detection of ischemic CAD over stenosis from coronary computed tomography angiography.

Published in:

International Journal of Cardiovascular Imaging, 2025, v. 41, n. 6, p. 1131, doi. 10.1007/s10554-025-03396-9

By:

Kero, Tanja;
Bär, Sarah;
Saraste, Antti;
Klén, Riku;
Bax, Jeroen J.;
Knuuti, Juhani;
Maaniitty, Teemu

Publication type:

Article

Convexity properties of generalized trigonometric and hyperbolic functions.

Published in:

Aequationes Mathematicae, 2015, v. 89, n. 3, p. 473, doi. 10.1007/s00010-013-0222-x

By:

Baricz, Árpád;
Bhayo, Barkat;
Klén, Riku

Publication type:

Article

Predicting Skeletal Muscle and Whole-Body Insulin Sensitivity Using NMR-Metabolomic Profiling.

Published in:

Journal of the Endocrine Society, 2020, v. 4, n. 4, p. N.PAG, doi. 10.1210/jendso/bvaa026

By:

Klén, Riku;
Honka, Miikka-Juhani;
Hannukainen, Jarna C;
Huovinen, Ville;
Bucci, Marco;
Latva-Rasku, Aino;
Venäläinen, Mikko S;
Kalliokoski, Kari K;
Virtanen, Kirsi A;
Lautamäki, Riikka;
Iozzo, Patricia;
Elo, Laura L;
Nuutila, Pirjo

Publication type:

Article

Prediction of complication related death after radical cystectomy for bladder cancer with machine learning methodology.

Published in:

Scandinavian Journal of Urology (Taylor & Francis Ltd), 2019, v. 53, n. 5, p. 325, doi. 10.1080/21681805.2019.1665579

By:

Klén, Riku;
Salminen, Antti P.;
Mahmoudian, Mehrad;
Syvänen, Kari T.;
Elo, Laura L.;
Boström, Peter J.

Publication type:

Article

Quantitative evaluation of unsupervised clustering algorithms for dynamic total-body PET image analysis.

Published in:

Journal of Medical Engineering & Technology, 2025, v. 49, n. 2, p. 37, doi. 10.1080/03091902.2025.2466834

By:

Rainio, Oona;
Jaakkola, Maria K.;
Klén, Riku

Publication type:

Article

PASI: A novel pathway method to identify delicate group effects.

Published in:

PLoS ONE, 2018, v. 13, n. 7, p. 1, doi. 10.1371/journal.pone.0199991

By:

Jaakkola, Maria K.;
McGlinchey, Aidan J.;
Klén, Riku;
Elo, Laura L.

Publication type:

Article

NEW TRIGONOMETRIC AND HYPERBOLIC INEQUALITIES.

Published in:

Miskolc Mathematical Notes, 2017, v. 18, n. 1, p. 125, doi. 10.18514/MMN.2017.1560

By:

BHAYO, BARKAT ALI;
KLÉN, RIKU;
SÁNDOR, JÓZSEF

Publication type:

Article

Development and evaluation of a machine learning-based in-hospital COVID-19 disease outcome predictor (CODOP): A multicontinental retrospective study.

Published in:

eLife, 2022, p. 1, doi. 10.7554/eLife.75985

By:

Klén, Riku;
Purohit, Disha;
Gómez-Huelgas, Ricardo;
Manuel Casas-Rojo, José;
Miguel Antón-Santos, Juan;
Millán Núñez-Cortés, Jesús;
Lumbreras, Carlos;
Manuel Ramos-Rincón, José;
García Barrio, Noelia;
Pedrera-Jiménez, Miguel;
Blanco, Antonio Lalueza;
Dolores Martin-Escalante, María;
Rivas-Ruiz, Francisco;
Ángeles Onieva-García, Maria;
Young, Pablo;
Ignacio Ramirez, Juan;
Titto Omonte, Estela Edith;
Gross Artega, Rosmery;
Canales Beltrán, Magdy Teresa;
Ruben Valdez, Pascual

Publication type:

Article

Classification of ischemia from myocardial polar maps in 15O–H2O cardiac perfusion imaging using a convolutional neural network.

Published in:

Scientific Reports, 2022, v. 12, n. 1, p. 1, doi. 10.1038/s41598-022-06604-x

By:

Teuho, Jarmo;
Schultz, Jussi;
Klén, Riku;
Knuuti, Juhani;
Saraste, Antti;
Ono, Naoaki;
Kanaya, Shigehiko

Publication type:

Article

The Untapped Potential of Dimension Reduction in Neuroimaging: Artificial Intelligence-Driven Multimodal Analysis of Long COVID Fatigue.

Published in:

Brain Sciences (2076-3425), 2024, v. 14, n. 12, p. 1209, doi. 10.3390/brainsci14121209

By:

Rudroff, Thorsten;
Klén, Riku;
Rainio, Oona;
Tuulari, Jetro

Publication type:

Article

Neuroplasticity Meets Artificial Intelligence: A Hippocampus-Inspired Approach to the Stability–Plasticity Dilemma.

Published in:

Brain Sciences (2076-3425), 2024, v. 14, n. 11, p. 1111, doi. 10.3390/brainsci14111111

By:

Rudroff, Thorsten;
Rainio, Oona;
Klén, Riku

Publication type:

Article

Leveraging Artificial Intelligence to Optimize Transcranial Direct Current Stimulation for Long COVID Management: A Forward-Looking Perspective.

Published in:

Brain Sciences (2076-3425), 2024, v. 14, n. 8, p. 831, doi. 10.3390/brainsci14080831

By:

Rudroff, Thorsten;
Rainio, Oona;
Klén, Riku

Publication type:

Article

Hyperbolic Type Distances in Starlike Domains.

Published in:

Results in Mathematics / Resultate der Mathematik, 2017, v. 72, n. 1/2, p. 47, doi. 10.1007/s00025-016-0642-8

By:

Klén, Riku

Publication type:

Article

Risk factors for revision due to prosthetic joint infection following total knee arthroplasty based on 62,087 knees in the Finnish Arthroplasty Register from 2014 to 2020.

Published in:

Acta Orthopaedica, 2023, v. 94, p. 215, doi. 10.2340/17453674.2023.12307

By:

KEEMU, Hannes;
ALAKYLÄ, Kasperi J.;
KLÉN, Riku;
PANULA, Valtteri J.;
VENÄLÄINEN, Mikko S.;
HAAPAKOSKI, Jaason J.;
ESKELINEN, Antti P.;
PAMILO, Konsta;
KETTUNEN, Jukka S.;
PUHTO, Ari-Pekka;
VASARA, Anna I.;
ELO, Laura L.;
MÄKELÄ, Keijo T.

Publication type:

Article

Classification of head and neck cancer from PET images using convolutional neural networks.

Published in:

Scientific Reports, 2023, v. 13, n. 1, p. 1, doi. 10.1038/s41598-023-37603-1

By:

Hellström, Henri;
Liedes, Joonas;
Rainio, Oona;
Malaspina, Simona;
Kemppainen, Jukka;
Klén, Riku

Publication type:

Article

LOCAL CONVEXITY PROPERTIES OF BALLS IN APOLLONIAN AND SEITTENRANTA'S METRICS.

Published in:

Conformal Geometry & Dynamics, 2013, v. 17, n. 10, p. 133, doi. 10.1090/S1088-4173-2013-00257-9

By:

KLÉN, RIKU

Publication type:

Article

LOCAL CONVEXITY PROPERTIES OF BALLS IN APOLLONIAN AND SEITTENRANTA'S METRICS.

Published in:

Conformal Geometry & Dynamics, 2013, v. 17, n. 9, p. 1

By:

KLÉN, RIKU

Publication type:

Article

A crowdsourced analysis to identify ab initio molecular signatures predictive of susceptibility to viral infection.

Published in:

Nature Communications, 2018, v. 9, p. 1, doi. 10.1038/s41467-018-06735-8

By:

Fourati, Slim;
Talla, Aarthi;
Mahmoudian, Mehrad;
Burkhart, Joshua G.;
Klén, Riku;
Henao, Ricardo;
Yu, Thomas;
Aydın, Zafer;
Yeung, Ka Yee;
Ahsen, Mehmet Eren;
Almugbel, Reem;
Jahandideh, Samad;
Liang, Xiao;
Nordling, Torbjörn E. M.;
Shiga, Motoki;
Stanescu, Ana;
Vogel, Robert;
The Respiratory Viral DREAM Challenge Consortium;
Pandey, Gaurav;
Chiu, Christopher

Publication type:

Article

Geometric properties of the Cassinian metric.

Published in:

Mathematische Nachrichten, 2017, v. 290, n. 10, p. 1531, doi. 10.1002/mana.201600117

By:

Klén, Riku;
Mohapatra, Manas Ranjan;
Sahoo, Swadesh Kumar

Publication type:

Article

Quantitative Perfusion Imaging with Total-Body PET.

Published in:

Journal of Nuclear Medicine, 2023, v. 64, p. 11S, doi. 10.2967/jnumed.122.264870

By:

Knuuti, Juhani;
Tuisku, Jouni;
Kärpijoki, Henri;
Iida, Hidehiro;
Maaniitty, Teemu;
Latva-Rasku, Aino;
Oikonen, Vesa;
Nesterov, Sergey V.;
Teuho, Jarmo;
Jaakkola, Maria K.;
Klén, Riku;
Louhi, Heli;
Saunavaara, Virva;
Nuutila, Pirjo;
Saraste, Antti;
Rinne, Juha;
Nummenmaa, Lauri

Publication type:

Article

Image augmentation with conformal mappings for a convolutional neural network.

Published in:

Computational & Applied Mathematics, 2023, v. 42, n. 8, p. 1, doi. 10.1007/s40314-023-02501-9

By:

Rainio, Oona;
Nasser, Mohamed M. S.;
Vuorinen, Matti;
Klén, Riku

Publication type:

Article

A Respiratory Motion Estimation Method Based on Inertial Measurement Units for Gated Positron Emission Tomography.

Published in:

Sensors (14248220), 2021, v. 21, n. 12, p. 3983, doi. 10.3390/s21123983

By:

Lehtonen, Eero;
Teuho, Jarmo;
Koskinen, Juho;
Jafari Tadi, Mojtaba;
Klén, Riku;
Siekkinen, Reetta;
Rives Gambin, Joaquin;
Vasankari, Tuija;
Saraste, Antti

Publication type:

Article

A Computational Framework for Data Fusion in MEMS-Based Cardiac and Respiratory Gating.

Published in:

Sensors (14248220), 2019, v. 19, n. 19, p. 0, doi. 10.3390/s19194137

By:

Jafari Tadi, Mojtaba;
Lehtonen, Eero;
Teuho, Jarmo;
Koskinen, Juho;
Schultz, Jussi;
Siekkinen, Reetta;
Koivisto, Tero;
Pänkäälä, Mikko;
Teräs, Mika;
Klén, Riku

Publication type:

Article

L1TD1 - a prognostic marker for colon cancer.

Published in:

2019

By:

Chakroborty, Deepankar;
Emani, Maheswara Reddy;
Klén, Riku;
Böckelman, Camilla;
Hagström, Jaana;
Haglund, Caj;
Ristimäki, Ari;
Lahesmaa, Riitta;
Elo, Laura L.

Publication type:

journal article

Author Correction: Evaluation metrics and statistical tests for machine learning.

Published in:

2024

By:

Rainio, Oona;
Teuho, Jarmo;
Klén, Riku

Publication type:

Correction Notice

Evaluation of image quality with four positron emitters and three preclinical PET/CT systems.

Published in:

EJNMMI Research, 2020, v. 10, n. 1, p. 1, doi. 10.1186/s13550-020-00724-z

By:

Teuho, Jarmo;
Riehakainen, Leon;
Honkaniemi, Aake;
Moisio, Olli;
Han, Chunlei;
Tirri, Marko;
Liu, Shihao;
Grönroos, Tove J.;
Liu, Jie;
Wan, Lin;
Liang, Xiao;
Ling, Yiqing;
Hua, Yuexuan;
Roivainen, Anne;
Knuuti, Juhani;
Xie, Qingguo;
Teräs, Mika;
D'Ascenzo, Nicola;
Klén, Riku

Publication type:

Article

Incremental prognostic value of downstream positron emission tomography perfusion imaging after coronary computed tomography angiography: a study using machine learning.

Published in:

European Heart Journal - Cardiovascular Imaging, 2024, v. 25, n. 2, p. 285, doi. 10.1093/ehjci/jead246

By:

Lehtonen, Eero;
Kujala, Iida;
Tamminen, Jonne;
Maaniitty, Teemu;
Saraste, Antti;
Teuho, Jarmo;
Knuuti, Juhani;
Klén, Riku

Publication type:

Article

Prognostic value of combined coronary CT angiography and myocardial perfusion imaging in women and men.

Published in:

European Heart Journal - Cardiovascular Imaging, 2023, v. 24, n. 9, p. 1201, doi. 10.1093/ehjci/jead072

By:

Kujala, Iida;
Nammas, Wail;
Maaniitty, Teemu;
Stenström, Iida;
Klén, Riku;
Bax, Jeroen J;
Knuuti, Juhani;
Saraste, Antti

Publication type:

Article

Development and evaluation of a machine learning-based in-hospital COVID-19 disease outcome predictor (CODOP): A multicontinental retrospective study.

Published in:

eLife, 2022, p. 1, doi. 10.7554/eLife.75985

By:

Klén, Riku;
Purohit, Disha;
Gómez-Huelgas, Ricardo;
Casas-Rojo, José Manuel;
Antón-Santos, Juan Miguel;
Núñez-Cortés, Jesús Millán;
Lumbreras, Carlos;
Ramos-Rincón, José Manuel;
Barrio, Noelia García;
Pedrera-Jiménez, Miguel;
Blanco, Antonio Lalueza;
Martin-Escalante, María Dolores;
Rivas-Ruiz, Francisco;
Onieva-García, Maria Ángeles;
Young, Pablo;
Ramirez, Juan Ignacio;
Titto Omonte, Estela Edith;
Artega, Rosmery Gross;
Canales Beltrán, Magdy Teresa;
Valdez, Pascual Ruben

Publication type:

Article

Expanding interpretability through complexity reduction in machine learning‐based modelling of cardiovascular disease: A myocardial perfusion imaging PET/CT prognostic study.

Published in:

European Journal of Clinical Investigation, 2025, v. 55, p. 1, doi. 10.1111/eci.14391

By:

Lehtonen, Eero;
Teuho, Jarmo;
Vatandoust, Monire;
Knuuti, Juhani;
Knol, Remco J. J.;
van der Zant, Friso M.;
Juárez‐Orozco, Luis Eduardo;
Klén, Riku

Publication type:

Article

On Isometries of Conformally Invariant Metrics.

Published in:

Journal of Geometric Analysis, 2016, v. 26, n. 2, p. 914, doi. 10.1007/s12220-015-9577-7

By:

Klén, Riku;
Vuorinen, Matti;
Zhang, Xiaohui

Publication type:

Article

Likelihood contrasts: a machine learning algorithm for binary classification of longitudinal data.

Published in:

Scientific Reports, 2020, v. 10, n. 1, p. 1, doi. 10.1038/s41598-020-57924-9

By:

Klén, Riku;
Karhunen, Markku;
Elo, Laura L.

Publication type:

Article

Assessment of MRI-Based Attenuation Correction for MRI-Only Radiotherapy Treatment Planning of the Brain.

Published in:

Diagnostics (2075-4418), 2020, v. 10, n. 5, p. 299, doi. 10.3390/diagnostics10050299

By:

Ranta, Iiro;
Teuho, Jarmo;
Linden, Jani;
Klén, Riku;
Teräs, Mika;
Kapanen, Mika;
Keyriläinen, Jani

Publication type:

Article

Carimas: An Extensive Medical Imaging Data Processing Tool for Research.

Published in:

Journal of Digital Imaging, 2023, v. 36, n. 4, p. 1885, doi. 10.1007/s10278-023-00812-1

By:

Rainio, Oona;
Han, Chunlei;
Teuho, Jarmo;
Nesterov, Sergey V.;
Oikonen, Vesa;
Piirola, Sauli;
Laitinen, Timo;
Tättäläinen, Marko;
Knuuti, Juhani;
Klén, Riku

Publication type:

Article

Artificial Intelligence to Improve Risk Prediction with Nuclear Cardiac Studies.

Published in:

Current Cardiology Reports, 2022, v. 24, n. 4, p. 307, doi. 10.1007/s11886-022-01649-w

By:

Juarez-Orozco, Luis Eduardo;
Klén, Riku;
Niemi, Mikael;
Ruijsink, Bram;
Daquarti, Gustavo;
van Es, Rene;
Benjamins, Jan-Walter;
Yeung, Ming Wai;
van der Harst, Pim;
Knuuti, Juhani

Publication type:

Article

Segmentation of Dynamic Total-Body [18F]-FDG PET Images Using Unsupervised Clustering.

Published in:

International Journal of Biomedical Imaging, 2023, p. 1, doi. 10.1155/2023/3819587

By:

Jaakkola, Maria K.;
Rantala, Maria;
Jalo, Anna;
Saari, Teemu;
Hentilä, Jaakko;
Helin, Jatta S.;
Nissinen, Tuuli A.;
Eskola, Olli;
Rajander, Johan;
Virtanen, Kirsi A.;
Hannukainen, Jarna C.;
López-Picón, Francisco;
Klén, Riku

Publication type:

Article

Stable Iterative Variable Selection.

Published in:

Bioinformatics, 2021, v. 37, n. 24, p. 4810, doi. 10.1093/bioinformatics/btab501

By:

Mahmoudian, Mehrad;
Venäläinen, Mikko S;
Klén, Riku;
Elo, Laura L

Publication type:

Article

Development and validation of COEWS (COVID-19 Early Warning Score) for hospitalized COVID-19 with laboratory features: A multicontinental retrospective study.

Published in:

eLife, 2023, p. 1, doi. 10.7554/eLife.85618

By:

Klén, Riku;
Huespe, Ivan A.;
Aníbal Gregalio, Felipe;
Lalueza Blanco, Antonio Lalueza;
Pedrera Jimenez, Miguel;
Garcia Barrio, Noelia;
Ruben Valdez, Pascual;
Mirofsky, Matias A.;
Boietti, Bruno;
Gómez-Huelgas, Ricardo;
Manuel Casas-Rojo, José;
Miguel Antón-Santos, Juan;
Alberto Pollan, Javier;
Gómez-Varela, David

Publication type:

Article

Hyperbolic distance between hyperbolic lines.

Published in:

Annales Mathematicae et Informaticae, 2017, v. 47, p. 129

By:

Klén, Riku

Publication type:

Article

AI for the prediction of early stages of Alzheimer's disease from neuroimaging biomarkers – A narrative review of a growing field.

Published in:

Neurological Sciences, 2024, v. 45, n. 11, p. 5117, doi. 10.1007/s10072-024-07649-8

By:

Rudroff, Thorsten;
Rainio, Oona;
Klén, Riku

Publication type:

Article

Exploring Generative Adversarial Network-Based Augmentation of Magnetic Resonance Brain Tumor Images.

Published in:

Applied Sciences (2076-3417), 2024, v. 14, n. 24, p. 11822, doi. 10.3390/app142411822

By:

Mahnoor, Mahnoor;
Rainio, Oona;
Klén, Riku

Publication type:

Article

Are Quantitative Errors Reduced with Time-of-Flight Reconstruction When Using Imperfect MR-Based Attenuation Maps for 18 F-FDG PET/MR Neuroimaging?

Published in:

Applied Sciences (2076-3417), 2022, v. 12, n. 9, p. N.PAG, doi. 10.3390/app12094605

By:

Lindén, Jani;
Teuho, Jarmo;
Klén, Riku;
Teräs, Mika

Publication type:

Article

Pulmonary blood flow quantification in humans from 15O-water PET.

Published in:

Annals of Nuclear Medicine, 2025, v. 39, n. 6, p. 600, doi. 10.1007/s12149-025-02035-6

By:

Rainio, Oona;
Kärpijoki, Henri;
Knuuti, Juhani;
Klén, Riku

Publication type:

Article

Compartmental modeling for blood flow quantification from dynamic 15O-water PET images of humans: a systematic review.

Published in:

Annals of Nuclear Medicine, 2025, v. 39, n. 3, p. 231, doi. 10.1007/s12149-025-02014-x

By:

Rainio, Oona;
Klén, Riku

Publication type:

Article

Deep generative denoising networks enhance quality and accuracy of gated cardiac PET data.

Published in:

Annals of Nuclear Medicine, 2024, v. 38, n. 10, p. 775, doi. 10.1007/s12149-024-01945-1

By:

Jafaritadi, Mojtaba;
Teuho, Jarmo;
Lehtonen, Eero;
Klén, Riku;
Saraste, Antti;
Levin, Craig S.

Publication type:

Article