Automatic cumulative sums contour detection of FBP-reconstructed multi-object nuclear medicine images. - Nicholas E. Protonotarios; George M. Spyrou; George A. Kastis (Comput. Biol. Medicine, 2017)

A Spline Approach to Parallel-Hole Collimator Deblurring for aSRT-Reconstructed SPECT Images. - Nicholas E. Protonotarios; Antonios Charalambopoulos; George A. Kastis; Krzysztof Kacperski; Athanassios S. Fokas (BIBE, 2019)

Evaluation of the spline reconstruction technique for preclinical PET imaging. - Alexandros Vrachliotis; George A. Kastis; Nicholas E. Protonotarios; Athanasios S. Fokas; Stephan G. Nekolla; Constantinos D. Anagnostopoulos; Lena Costaridou; Anastasios Gaitanis (Comput. Methods Programs Biomed., 2022)

Sigmoid and Beyond: Algebraic Activation Functions for Artificial Neural Networks Based on Solutions of a Riccati Equation. - Nicholas E. Protonotarios; Athanassios S. Fokas; George A. Kastis; Nikolaos Dikaios (IT Prof., 2022)

Discrete Shearlets as a Sparsifying Transform in Low-Rank Plus Sparse Decomposition for Undersampled (k, t)-Space MR Data. - Nicholas E. Protonotarios; Evangelia Tzampazidou; George A. Kastis; Nikolaos Dikaios (J. Imaging, 2022)

Lightweight machine learning for privacy-preserving and secure networked medical devices: The SEPTON project use cases. - Sotiris Messinis; Nicholas E. Protonotarios; Ioannis N. Tzortzis; Ioannis Rallis; Dimitrios Kalogeras; Nikolaos Doulamis (PETRA, 2023)

Client Selection and Resource Allocation via Graph Neural Networks for Efficient Federated Learning in Healthcare Environments. - Sotirios Messinis; Nicholas E. Protonotarios; Emmanouil Arapidis; Nikolaos Doulamis (PETRA, 2024)

A Way Forward for the MDCG 2019-16 Medical Device Security Guidance. - Steve Taylor 002; Martin Gilje Jaatun; Karin Bernsmed; Christos Androutsos; Dietmar Frey; Simone Favrin; João Rodrigues; Dusko Milojevic; Dimitrios A. Karras; Ioannis Siachos; Gregory Epiphaniou; Nabil Moukafih; et al. (PETRA, 2024)

Enhancing Internet of Medical Things security with artificial intelligence: A comprehensive review. - Sotiris Messinis; Nikos Temenos; Nicholas E. Protonotarios; Ioannis Rallis; Dimitrios Kalogeras; Nikolaos Doulamis (Comput. Biol. Medicine, 2024)

Noninvasive Quantification of Glucose Metabolism in Mice Myocardium Using the Spline Reconstruction Technique. - Alexandros Vrachliotis; Anastasios Gaitanis; Nicholas E. Protonotarios; George A. Kastis; Lena Costaridou (J. Imaging, 2024)

Differentially Private Client Selection and Resource Allocation in Federated Learning for Medical Applications Using Graph Neural Networks. - Sotirios Messinis; Nicholas E. Protonotarios; Nikolaos Doulamis (Sensors, 2024)

Threshold Multiparty Private Set Intersection via Federated Graph Neural Networks. - Sotirios Messinis; Nicholas E. Protonotarios; Dimitris Kalogeras; Nikolaos Doulamis (EICC, 2025)

Roads Digital Twin: Predictive Situational Awareness Using 360$^{ circ }$ Video Streaming and Graph Neural Networks. - Sotirios Messinis; Oussama El Marai; Nicholas E. Protonotarios; Tarik Taleb; Nikolaos Doulamis (IEEE Trans. Veh. Technol., 2025)