Sofia Ira Ktena

4.8k total citations · 2 hit papers
19 papers, 1.1k citations indexed

About

Sofia Ira Ktena is a scholar working on Cognitive Neuroscience, Artificial Intelligence and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Sofia Ira Ktena has authored 19 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Cognitive Neuroscience, 6 papers in Artificial Intelligence and 6 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Sofia Ira Ktena's work include Functional Brain Connectivity Studies (7 papers), Advanced Neuroimaging Techniques and Applications (5 papers) and Advanced MRI Techniques and Applications (4 papers). Sofia Ira Ktena is often cited by papers focused on Functional Brain Connectivity Studies (7 papers), Advanced Neuroimaging Techniques and Applications (5 papers) and Advanced MRI Techniques and Applications (4 papers). Sofia Ira Ktena collaborates with scholars based in United Kingdom, United States and Germany. Sofia Ira Ktena's co-authors include Daniel Rueckert, Sarah Parisot, Ben Glocker, Matthew Lee, Enzo Ferrante, Ricardo Guerrero, Salim Arslan, Antonios Makropoulos, Emma C. Robinson and Martin Rajchl and has published in prestigious journals such as Nature Medicine, NeuroImage and Stroke.

In The Last Decade

Sofia Ira Ktena

18 papers receiving 1.1k citations

Hit Papers

Disease prediction using graph convolutional networks: Ap... 2018 2026 2020 2023 2018 2024 100 200 300 400
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Disease prediction using graph convolutional networks: Application to Autism Spectrum Disorder and Alzheimer’s disease
    2018 432 citations Sarah Parisot, Sofia Ira Ktena et al. Medical Image Analysis profile →
  2. Generative models improve fairness of medical classifiers under distribution shifts
    2024 55 citations Sofia Ira Ktena, Olivia Wiles et al. Nature Medicine profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Sofia Ira Ktena United Kingdom 11 687 344 274 136 111 19 1.1k
Nicha C. Dvornek United States 18 824 1.2× 424 1.2× 503 1.8× 141 1.0× 129 1.2× 52 1.5k
Xiaoxiao Li Canada 18 558 0.8× 309 0.9× 600 2.2× 88 0.6× 121 1.1× 53 1.4k
Jahmunah Vicnesh Singapore 22 880 1.3× 196 0.6× 267 1.0× 137 1.0× 120 1.1× 38 1.8k
Jiashuang Huang China 18 437 0.6× 257 0.7× 313 1.1× 101 0.7× 196 1.8× 77 1.1k
Parisa Moridian Australia 17 745 1.1× 281 0.8× 301 1.1× 135 1.0× 191 1.7× 19 1.4k
Mahboobeh Jafari Australia 16 625 0.9× 233 0.7× 249 0.9× 112 0.8× 154 1.4× 23 1.2k
Tristan Glatard Canada 20 572 0.8× 380 1.1× 114 0.4× 128 0.9× 52 0.5× 76 1.5k
Devon Hjelm United States 6 456 0.7× 252 0.7× 342 1.2× 56 0.4× 59 0.5× 11 945
Gilles Cohen Switzerland 15 353 0.5× 262 0.8× 299 1.1× 193 1.4× 41 0.4× 29 1.3k
Mohammad Zavid Parvez Bangladesh 14 375 0.5× 348 1.0× 369 1.3× 86 0.6× 163 1.5× 46 982

Countries citing papers authored by Sofia Ira Ktena

Since Specialization
Citations

This map shows the geographic impact of Sofia Ira Ktena's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sofia Ira Ktena with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sofia Ira Ktena more than expected).

Fields of papers citing papers by Sofia Ira Ktena

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sofia Ira Ktena. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sofia Ira Ktena. The network helps show where Sofia Ira Ktena may publish in the future.

Co-authorship network of co-authors of Sofia Ira Ktena

This figure shows the co-authorship network connecting the top 25 collaborators of Sofia Ira Ktena. A scholar is included among the top collaborators of Sofia Ira Ktena based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sofia Ira Ktena. Sofia Ira Ktena is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

19 of 19 papers shown
1.
Kanni, Theodora, Sofia Ira Ktena, Konstantinos Leventogiannis, et al.. (2025). Prevalence of Hidradenitis Suppurativa in Athens, Greece: A Cross-Sectional Study Based on a Validated Questionnaire. Dermatology. 241(Suppl. 1). 52–56.
2.
Ktena, Sofia Ira, Olivia Wiles, Sylvestre-Alvise Rebuffi, et al.. (2024). Generative models improve fairness of medical classifiers under distribution shifts. Nature Medicine. 30(4). 1166–1173. 55 indexed citations breakdown →
3.
Vlachoyiannopoulos, Panayiotis G., Μαρία Παππά, Sofia Ira Ktena, et al.. (2023). A randomized clinical trial of bermekimab treatment for clinical improvement of systemic sclerosis. iScience. 26(9). 107670–107670. 3 indexed citations
4.
Hayek, Salim S., Christoph Roderburg, Pennelope Blakely, et al.. (2021). Circulating Osteopontin Levels and Outcomes in Patients Hospitalized for COVID-19. Journal of Clinical Medicine. 10(17). 3907–3907. 14 indexed citations
5.
Belli, Luca, Sofia Ira Ktena, Alykhan Tejani, et al.. (2020). Privacy-Preserving Recommender Systems Challenge on Twitter's Home Timeline. arXiv (Cornell University). 2 indexed citations
6.
Zhang, Caojin, Yuanpu Xie, Sofia Ira Ktena, et al.. (2020). Model Size Reduction Using Frequency Based Double Hashing for Recommender Systems. 521–526. 25 indexed citations
7.
Anelli, Vito Walter, Amra Delić, Nazareno Andrade, et al.. (2020). RecSys 2020 Challenge Workshop: Engagement Prediction on Twitter’s Home Timeline. 623–627. 8 indexed citations
8.
Ktena, Sofia Ira, et al.. (2020). Deep Bayesian Bandits: Exploring in Online Personalized Recommendations. 456–461. 17 indexed citations
9.
Ktena, Sofia Ira, Markus D. Schirmer, Mark R. Etherton, et al.. (2019). Brain Connectivity Measures Improve Modeling of Functional Outcome After Acute Ischemic Stroke. Stroke. 50(10). 2761–2767. 16 indexed citations
10.
Schirmer, Markus D., Sofia Ira Ktena, Marco Nardin, et al.. (2019). Rich-Club Organization: An Important Determinant of Functional Outcome After Acute Ischemic Stroke. Frontiers in Neurology. 10. 956–956. 10 indexed citations
11.
Ktena, Sofia Ira, et al.. (2019). Addressing delayed feedback for continuous training with neural networks in CTR prediction. 187–195. 30 indexed citations
12.
Parisot, Sarah, Sofia Ira Ktena, Enzo Ferrante, et al.. (2018). Disease prediction using graph convolutional networks: Application to Autism Spectrum Disorder and Alzheimer’s disease. Medical Image Analysis. 48. 117–130. 432 indexed citations breakdown →
13.
Parisot, Sarah, Sofia Ira Ktena, Enzo Ferrante, et al.. (2017). Spectral Graph Convolutions on Population Graphs for Disease Prediction. arXiv (Cornell University). 2 indexed citations
14.
Ktena, Sofia Ira, Sarah Parisot, Enzo Ferrante, et al.. (2017). Metric learning with spectral graph convolutions on brain connectivity networks. NeuroImage. 169. 431–442. 252 indexed citations
15.
Arslan, Salim, Sofia Ira Ktena, Antonios Makropoulos, et al.. (2017). Human brain mapping: A systematic comparison of parcellation methods for the human cerebral cortex. NeuroImage. 170. 5–30. 230 indexed citations
16.
Parisot, Sarah, Ben Glocker, Sofia Ira Ktena, et al.. (2017). A flexible graphical model for multi-modal parcellation of the cortex. NeuroImage. 162. 226–248. 9 indexed citations
17.
Ktena, Sofia Ira, Salim Arslan, Sarah Parisot, & Daniel Rueckert. (2017). Exploring heritability of functional brain networks with inexact graph matching. Spiral (Imperial College London). 354–357. 5 indexed citations
18.
Ktena, Sofia Ira, Sarah Parisot, Jonathan Passerat‐Palmbach, & Daniel Rueckert. (2016). Comparison of Brain Networks with Unknown Correspondences. arXiv (Cornell University). 1 indexed citations
19.
Ktena, Sofia Ira, William W. Abbott, & A. Aldo Faisal. (2015). A virtual reality platform for safe evaluation and training of natural gaze-based wheelchair driving. Spiral (Imperial College London). 236–239. 30 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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