Panagiotis Karagounis, Giorgos Prionas, Elias Armenis, Georgios Tsiganos, Panagiotis Baltopoulos,
More than 90% of injuries in runners are recorded in the lower extremity, equally affecting the regions of the knee, shank, and foot. Stress fractures are responsible for numerous running-related injuries. In the current study, the plantar pressure patterns of prerace, immediately postrace, and 24 hours after long-distance running in the Spartathlon were analyzed to compare foot loading in the respective conditions. Forty-six male participants of the Spartathlon ultramarathon were examined before, ...
Tópico(s): Diabetic Foot Ulcer Assessment and Management
2009 - SAGE Publishing | Foot & Ankle Specialist
Geert Verdoolaege, Giorgos Karagounis, A. Murari, J. Vega, G. Van Oost,
Pattern recognition is becoming an increasingly important tool for making inferences from the massive amounts of data produced in fusion experiments. In this work, we present an integrated framework for (real-time) pattern recognition for fusion data. The main starting point is the inherent probabilistic nature of measurements of plasma quantities. Since pattern recognition is essentially based on geometric concepts such as the notion of distance, this necessitates a geometric formalism for probability ...
Tópico(s): Time Series Analysis and Forecasting
2012 - Taylor & Francis | Fusion Science & Technology
Giorgos Karagounis, D. De Zutter, Dries Vande Ginste,
Full-wave simulations of optical waveguides are often intractable due to their large electrical size. Naively focussing on a smaller part of the waveguide, e.g. to study coupling, offers no solution given the non-negligible interaction with the remaining parts of the structure. Thereto, in this paper, the coordinate stretching formulation of a perfectly matched layer is integrated into a method of moments based boundary integral equation solver in order to damp the interaction between multiple parts, ...
Tópico(s): Gyrotron and Vacuum Electronics Research
2016 - Optica Publishing Group | Optics Express
Giorgos Karagounis, D. De Zutter, Dries Vande Ginste,
The multilevel fast multipole method (MLFMM) is combined with the uniform theory of diffraction (UTD) to model two-dimensional (2-D) scattering problems including very large scatterers. The discretization of the very large scatterers is avoided by using ray-based methods. Reflections are accounted for by image source theory, while for diffraction a new MLFMM translation matrix is introduced. The translation matrix elements are derived based on a technique that generalizes the use of UTD for arbitrary ...
Tópico(s): Electromagnetic Compatibility and Measurements
2015 - IEEE Antennas & Propagation Society | IEEE Transactions on Antennas and Propagation
Geert Verdoolaege, Giorgos Karagounis, M. Tendler, G. Van Oost,
Pattern recognition is becoming an increasingly important tool for making inferences from the massive amounts of data produced in fusion experiments. The purpose is to contribute to physics studies and plasma control. In this work, we address the visualization of plasma confinement data, the (real-time) identification of confinement regimes and the establishment of a scaling law for the energy confinement time. We take an intrinsically probabilistic approach, modeling data from the International ...
Tópico(s): Cold Fusion and Nuclear Reactions
2012 - IOP Publishing | Plasma Physics and Controlled Fusion
Anastasia Velalopoulou, Ilias V. Karagounis, Gwendolyn M. Cramer, Michele M. Kim, Giorgos Skoufos, Denisa Goia, Sarah Hagan, Ioannis I. Verginadis, Khayrullo Shoniyozov, June Chiango, Michelle Cerullo, Kelley Varner, Lutian Yao, Ling Qin, Artemis G. Hatzigeorgiou, Andy J. Minn, Mary Putt, Matthew Lanza, Charles‐Antoine Assenmacher, Enrico Radaelli, Jennifer Huck, Eric S. Diffenderfer, Lei Dong, James M. Metz, Constantinos Koumenis, Keith A. Cengel, Amit Maity, Theresa M. Busch,
Abstract In studies of electron and proton radiotherapy, ultrahigh dose rates of FLASH radiotherapy appear to produce fewer toxicities than standard dose rates while maintaining local tumor control. FLASH-proton radiotherapy (F-PRT) brings the spatial advantages of PRT to FLASH dose rates (>40 Gy/second), making it important to understand if and how F-PRT spares normal tissues while providing antitumor efficacy that is equivalent to standard-proton radiotherapy (S-PRT). Here we studied PRT damage ...
Tópico(s): Effects of Radiation Exposure
2021 - American Association for Cancer Research | Cancer Research
Anastasia Velalopoulou, Ilias V. Karagounis, Giorgos Skoufos, Ioannis I. Verginadis, Michele M. Kim, Khayrullo Shoniyozov, Artemis G. Hatzigeorgiou, Eric S. Diffenderfer, Lei Dong, James M. Metz, Constantinos Koumenis, Keith A. Cengel, Amit Maity, Theresa M. Busch,
... radiotherapy effects. Citation Format: Anastasia Velalopoulou, Ilias V. Karagounis, Giorgos Skoufos, Ioannis I. Verginadis, Michele Kim, Khayrullo Shoniyozov, ...
Tópico(s): Radiomics and Machine Learning in Medical Imaging
2022 - American Association for Cancer Research | Cancer Research
Giorgos Karagounis, D. De Zutter, Dries Vande Ginste,
In this paper, a two-dimensional high-frequency formalism is presented which describes the diffraction of arbitrary wavefronts incident on edges of an otherwise smooth surface. The diffracted field in all points of a predefined region of interest is expressed in terms of the generalized Huygens representation of the incident field and a limited set of translation coefficients that take into account the arbitrary nature of the incident wavefront and its diffraction. The method is based on the Uniform ...
Tópico(s): Electromagnetic Simulation and Numerical Methods
2013 - Optica Publishing Group | Optics Express
Geert Verdoolaege, Giorgos Karagounis, G. Van Oost,
... Cite Icon Cite Search Site Citation Geert Verdoolaege, Giorgos Karagounis, Guido Van Oost; Geometry of nuclear fusion diagnostic ...
Tópico(s): Rough Sets and Fuzzy Logic
2013 - American Institute of Physics | AIP conference proceedings
Giorgos Karagounis, D. De Zutter, Dries Vande Ginste,
In this letter, a method is presented to numerically derive uniform theory of diffraction-like diffraction coefficients for canonical structures. To deal with the semi-infinite nature of these nonstandard structures, the coordinate stretching formulation of a perfectly matched layer is integrated into a method-of-moments-based boundary integral equation solver. The method is validated for diffraction of a plane wave at a perfectly electric conducting (PEC) slab and further, by way of example, applied ...
Tópico(s): Electromagnetic Simulation and Numerical Methods
2017 - IEEE Antennas & Propagation Society | IEEE Antennas and Wireless Propagation Letters
Ioannis I. Verginadis, Harris Avgousti, James Monslow, Giorgos Skoufos, Frank Chinga, Kyle Kim, Nektaria Maria Leli, Ilias V. Karagounis, Brett I. Bell, Anastasia Velalopoulou, Carlo Salas Salinas, Victoria S. Wu, Yang Li, Jiangbin Ye, David A. Scott, Andrei L. Osterman, Arjun Sengupta, Aalim M. Weljie, Menggui Huang, Duo Zhang, Yi Fan, Enrico Radaelli, John W. Tobias, Florian Rambow, Panagiotis Karras, Jean‐Christophe Marine, Xiaowei Xu, Artemis G. Hatzigeorgiou, Sandra Ryeom, J. Alan Diehl, Serge Y. Fuchs, Ellen Puré, Constantinos Koumenis,
Abstract Bidirectional signalling between the tumour and stroma shapes tumour aggressiveness and metastasis. ATF4 is a major effector of the Integrated Stress Response, a homeostatic mechanism that couples cell growth and survival to bioenergetic demands. Using conditional knockout ATF4 mice, we show that global, or fibroblast-specific loss of host ATF4, results in deficient vascularization and a pronounced growth delay of syngeneic melanoma and pancreatic tumours. Single-cell transcriptomics of ...
Tópico(s): Immune cells in cancer
2022 - Nature Portfolio | Nature Cell Biology
Geert Verdoolaege, Giorgos Karagounis, G. Van Oost,
Tópico(s): Magnetic confinement fusion research
2012 - Elsevier BV | Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
Nektaria Maria Leli, Hengxi Liu, Souvik Dey, Lauren Brady, Carlo Salas Salinas, Victoria Wu, Spiros Tastsoglou, Giorgos Skoufos, Ioannis I. Verginadis, Ilias V. Karagounis, Artemis G. Hatzigeorgiou, Constantinos Koumenis,
... Brady, Carlo Salas Salinas, Victoria Wu, Spiros Tastsoglou, Giorgos Skoufos, Ioannis Verginadis, Ilias Karagounis, Artemis G. Hatzigeorgiou, Constantinos Koumenis. A genome-wide ...
Tópico(s): Kruppel-like factors research
2024 - American Association for Cancer Research | Cancer Research
Keith A. Cengel, M. Kim, Eric S. Diffenderfer, Ilias V. Karagounis, G. Crämer, Giorgos Skoufos, Artemis G. Hatzigeorgiou, Maria Lanza, Charles‐Antoine Assenmacher, Enrico Radaelli, Mary Putt, Sarah Hagan, June Chiango, Khayrullo Shoniyozov, Lei Dong, Constantinos Koumenis, Amit Maity, Theresa M. Busch, J Metz, Jennifer Huck,
Tópico(s): Head and Neck Cancer Studies
2022 - Elsevier BV | Physica Medica
Theresa M. Busch, Anastasia Velalopoulou, Ilias V. Karagounis, G. Crämer, Giorgos Skoufos, Artemis G. Hatzigeorgiou, Maria Lanza, Enrico Radaelli, Charles‐Antoine Assenmacher, Mary Putt, M. Kim, Eric S. Diffenderfer, Lei Dong, James M. Metz, Constantinos Koumenis, Keith A. Cengel, Amit Maity,
Tópico(s): Photoacoustic and Ultrasonic Imaging
2022 - Elsevier BV | Physica Medica
Ioannis I. Verginadis, Harris Avgousti, Kyle Kim, Giorgos Skoufos, Frank Chinga, Nektaria Maria Leli, Ilias V. Karagounis, Brett I. Bell, Anastasia Velalopoulou, Victoria S. Wu, Yang Li, Jiangbin Ye, David A. Scott, Andrei L. Osterman, Arjun Sengupta, Aalim M. Weljie, Artemis G. Hatzigeorgiou, Sandra Ryeom, Alan J. Diehl, Serge Y. Fuchs, Ellen Puré, Constantinos Koumenis,
... Format: Ioannis I. Verginadis, Harris Avgousti, Kyle Kim, Giorgos Skoufos, Frank Chinga, Nektaria Maria Leli, Ilias V. Karagounis, Brett I. Bell, Anastasia Velalopoulou, Victoria S. Wu, ...
Tópico(s): Angiogenesis and VEGF in Cancer
2022 - American Association for Cancer Research | Cancer Research
Anastasia Velalopoulou, Ilias V. Karagounis, G. Crämer, M. Kim, Giorgos Skoufos, Denisa Goia, Sarah Hagan, Ioannis I. Verginadis, Khayrullo Shoniyozov, June Chiango, Marcelo Cerullo, Kelley Varner, Lihong Yao, Li Qin, Artemis G. Hatzigeorgiou, Andy J. Minn, Mary Putt, Maria Lanza, Charles‐Antoine Assenmacher, Enrico Radaelli, Jennifer Huck, Eric S. Diffenderfer, Lei Dong, James M. Metz, Constantinos Koumenis, Keith A. Cengel, Amit Maity, Theresa M. Busch,
Tópico(s): Advanced Radiotherapy Techniques
2022 - Elsevier BV | Physica Medica