Objective Comparison of Quantitative Imaging Modalities Without the Use of a Gold Standard. - John W. Hoppin; Matthew A. Kupinski; George A. Kastis; Eric Clarkson; Harrison H. Barrett (IEEE Trans. Medical Imaging, 2002)

Analytical reconstructions for PET and spect employing L1-denoising. - Paolo Emilio Barbano; Athanassios S. Fokas; George A. Kastis (DPS, 2009)

Mathematical Methods in PET and SPECT Imaging. - Athanassios S. Fokas; George A. Kastis (Handbook of Mathematical Methods in Imaging, 2015)

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)

Advancing oncology with federated learning: transcending boundaries in breast, lung, and prostate cancer. A systematic review. - Anshu Ankolekar; Sebastian Boie; Maryam Abdollahyan; Emanuela Gadaleta; Seyed Alireza Hasheminasab; Guang Yang 006; Charles Beauville; Nikolaos Dikaios; George A. Kastis; Michael Bussmann; Sara Khalid; Hagen Kruger; et al. (CoRR, 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)

Intra-clustering analysis reveals tissue-specific mutational patterns. - Stamatis Choudalakis; George A. Kastis; Nikolaos Dikaios (Comput. Methods Programs Biomed., 2025)

Advancing breast, lung and prostate cancer research with federated learning. A systematic review. - Anshu Ankolekar; Sebastian Boie; Maryam Abdollahyan; Emanuela Gadaleta; Seyed Alireza Hasheminasab; Guang Yang 006; Charles Beauville; Nikolaos Dikaios; George A. Kastis; Michael Bussmann; Claude Chelala; Sara Khalid; et al. (npj Digit. Medicine, 2025)