Zobrazeno 1 - 10 of 62 pro vyhledávání: '"Demetrios N. Velis"'
1
Akademický článek
Virtual localization of the seizure onset zone: Using non-invasive MEG virtual electrodes at stereo-EEG electrode locations in refractory epilepsy patients
Autor: Erika L. Juárez-Martinez, Ida A. Nissen, Sander Idema, Demetrios N. Velis, Arjan Hillebrand, Cornelis J. Stam, Elisabeth C.W. van Straaten
Publikováno v: NeuroImage: Clinical, Vol 19, Iss , Pp 758-766 (2018)
In some patients with medically refractory epilepsy, EEG with intracerebrally placed electrodes (stereo-electroencephalography, SEEG) is needed to locate the seizure onset zone (SOZ) for successful epilepsy surgery. SEEG has limitations and entails r
Externí odkaz: https://doaj.org/article/0b723792c2f64d3a8dbc05a28cabb23a
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2
Akademický článek
Localization of the Epileptogenic Zone Using Interictal MEG and Machine Learning in a Large Cohort of Drug-Resistant Epilepsy Patients
Autor: Ida A. Nissen, Cornelis J. Stam, Elisabeth C. W. van Straaten, Viktor Wottschel, Jaap C. Reijneveld, Johannes C. Baayen, Philip C. de Witt Hamer, Sander Idema, Demetrios N. Velis, Arjan Hillebrand
Publikováno v: Frontiers in Neurology, Vol 9 (2018)
Objective: Epilepsy surgery results in seizure freedom in the majority of drug-resistant patients. To improve surgery outcome we studied whether MEG metrics combined with machine learning can improve localization of the epileptogenic zone, thereby en
Externí odkaz: https://doaj.org/article/e1d5f5c864f243c287297bd7b352d300
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3
Optimization of epilepsy surgery through virtual resections on individual structural brain networks
Autor: Piet Van Mieghem, Cornelis J. Stam, Linda Douw, Petra J. W. Pouwels, Demetrios N. Velis, Ana P. Millán, Ida A. Nissen, Elisabeth C.W. van Straaten, Johannes C. Baayen, Sander Idema, Arjan Hillebrand
Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
Nissen, I A, Millán, A P, Stam, C J, van Straaten, E C W, Douw, L, Pouwels, P J W, Idema, S, Baayen, J C, Velis, D, van Mieghem, P & Hillebrand, A 2021, ' Optimization of epilepsy surgery through virtual resections on individual structural brain networks ', Scientific Reports, vol. 11, no. 1, 19025 . https://doi.org/10.1038/s41598-021-98046-0
Scientific Reports
Scientific Reports, 11(1)
Scientific Reports, 11(1):19025. Nature Publishing Group
BackgroundThe success of epilepsy surgery in patients with refractory epilepsy depends upon correct identification of the epileptogenic zone (EZ) and an optimal choice of the resection area. In this study we developed individualized computational mod
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69e153af65923136e9767b2ba43bf787
https://doi.org/10.1038/s41598-021-98046-0
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4
A European questionnaire survey on epilepsy monitoring units' current practice for postoperative psychogenic nonepileptic seizures' detection
Autor: Karen Bartholomeyczik, Hrvoje Hećimović, Susana Ferrao Santos, Cigdem Ozkara, H.E. Ronner, Andreas Schulze-Bonhage, Anke M. Staack, Petia Dimova, Anna Kelemen, Eugen Trinka, Andreas Liampas, Carla Bentes, Guido Rubboli, Markus Reuber, Jane de Tisi, Philippe Ryvlin, John S. Duncan, Addolorata Mascia, Antonio Gil-Nagel, Demetrios N. Velis, Sara Casciato, Adrien Gras, Savvas S. Papacostas, Johannes C. Baaijen, Alla Guekht, Elisabeth C.W. van Straaten, Sofia Markoula, Annette Hospes, Flavio Villani, Kristina Malmgren, Alfredo D'Aniello, Morten I. Lossius, Ángel Aledo-Serrano
Publikováno v: Markoula, S, Liampas, A, Rubolli, G, Duncan, J, Velis, D, Schulze-Bonhage, A, Alla, G, Bartholomeyczik, K, Tisi, J, Gras, A, Lossius, M I, Silvano, V F, Maren, S A, Hospes, A, Baaijen, J C, van Straaten, E C W, Ronner, H E, Casciato, S, D'aniello, A, Mascia, A, Susana, F S, Bentes, C, Serrano, A, Gil-Nagel, A, Dimova, P S, Hecimovic, H, Özkara, Ç, Malmgren, K, Papakostas, S, Kelemen, A, Reuber, M, Trinka, E & Ryvlin, P 2020, ' A European questionnaire survey on epilepsy monitoring units' current practice for postoperative psychogenic nonepileptic seizures' detection ', Epilepsy and Behavior, vol. 112, 107355 . https://doi.org/10.1016/j.yebeh.2020.107355
Epilepsy and Behavior, 112:107355. Academic Press Inc.
Background: In cases undergoing epilepsy surgery, postoperative psychogenic nonepileptic seizures (PNES) may be underdiagnosed complicating the assessment of postsurgical seizures outcome and the clinical management. We conducted a survey to investig
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e06b599f83618c79e3a92d82ca36a66d
http://www.scopus.com/inward/record.url?scp=85088828529&partnerID=8YFLogxK
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5
Virtual localization of the seizure onset zone
Autor: Arjan Hillebrand, Ida A. Nissen, Erika L. Juárez-Martinez, Elisabeth C.W. van Straaten, Cornelis J. Stam, Demetrios N. Velis, Sander Idema
Publikováno v: Juárez-Martinez, E L, Nissen, I A, Idema, S, Velis, D N, Hillebrand, A, Stam, C J & van Straaten, E C W 2018, ' Virtual localization of the seizure onset zone : Using non-invasive MEG virtual electrodes at stereo-EEG electrode locations in refractory epilepsy patients ', NeuroImage: Clinical, vol. 19, pp. 758-766 . https://doi.org/10.1016/j.nicl.2018.06.001
Juárez-Martinez, E L, Nissen, I A, Idema, S, Velis, D N, Hillebrand, A, Stam, C J & Straaten, E C W V 2018, ' Virtual localization of the seizure onset zone: Using non-invasive MEG virtual electrodes at stereo-EEG electrode locations in refractory epilepsy patients ', NeuroImage: Clinical, vol. 19, pp. 758-766 . https://doi.org/10.1016/j.nicl.2018.06.001
NeuroImage : Clinical
NeuroImage: Clinical, Vol 19, Iss, Pp 758-766 (2018)
NeuroImage: Clinical, 19, 758-766. Elsevier BV
In some patients with medically refractory epilepsy, EEG with intracerebrally placed electrodes (stereo-electroencephalography, SEEG) is needed to locate the seizure onset zone (SOZ) for successful epilepsy surgery. SEEG has limitations and entails r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb7af5b2fbf6ed9760ec944c41ee3a1c
http://www.scopus.com/inward/record.url?scp=85048524217&partnerID=8YFLogxK
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6
The use of single bipolar scalp derivation for the detection of ictal events during long-term EEG monitoring
Autor: Demetrios N. Velis, Elise E.M. Reus, Gerhard H. Visser, Frank C. Bennis, Evelien E. Geertsema
Publikováno v: Epileptic Disorders, 19(3), 307-314. John Libbey Eurotext
Epileptic Disorders, 19(3), 307-314. Wiley-Blackwell
Bennis, F C, Geertsema, E E, Velis, D N, Reus, E E M & Visser, G H 2017, ' The use of single bipolar scalp derivation for the detection of ictal events during long-term EEG monitoring ', Epileptic Disorders, vol. 19, no. 3, pp. 307-314 . https://doi.org/10.1684/epd.2017.0926
Aim. Epilepsy is difficult to diagnose using routine EEG recordings of short duration in patients who have low seizure frequency. Long-term EEG may be useful but is impractical in an out-of-hospital setting. We investigated whether single-channel sca
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bf6c33969a15f49a7a42c52ce6f09533
https://doi.org/10.1684/epd.2017.0926
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7
Altered GABA A receptor density and unaltered blood-brain barrier [11C]flumazenil transport in drug-resistant epilepsy patients with mesial temporal sclerosis
Autor: Jaap C. Reijneveld, Robert C. Schuit, Ronald Boellaard, Maqsood Yaqub, N. Harry Hendrikse, Jan J. Heimans, Patrick Schober, Andrey Postnov, Esther Bakker, Femke E. Froklage, Adriaan A. Lammertsma, Emile F.I. Comans, Demetrios N. Velis, Rob A. Voskuyl, Jack Zwemmer
Publikováno v: Journal of Cerebral Blood Flow and Metabolism, 37(1), 97-105. Nature Publishing Group
Froklage, F E, Postnov, A, Yaqub, M M, Bakker, E, Boellaard, R, Harry Hendrikse, N, Comans, E F I, Schuit, R C, Schober, P, Velis, D N, Zwemmer, J, Heimans, J J, Lammertsma, A A, Voskuyl, R A & Reijneveld, J C 2017, ' Altered GABA A receptor density and unaltered blood-brain barrier [ 11 C]flumazenil transport in drug-resistant epilepsy patients with mesial temporal sclerosis ', Journal of Cerebral Blood Flow and Metabolism, vol. 37, no. 1, pp. 97-105 . https://doi.org/10.1177/0271678X15618219
Journal of Cerebral Blood Flow & Metabolism
Studies in rodents suggest that flumazenil is a P-glycoprotein substrate at the blood–brain barrier. This study aimed to assess whether [11C]flumazenil is a P-glycoprotein substrate in humans and to what extent increased P-glycoprotein function in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c7d6053527ababee7248e942cd6fc2c
http://www.scopus.com/inward/record.url?scp=85006474622&partnerID=8YFLogxK
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8
Diagnostic utility of invasive EEG for epilepsy surgery: Indications, modalities, and techniques
Autor: Demetrios N. Velis, Philippe Kahane, Laura Tassi, Prasanna Jayakar, Donald L. Schomer, A. Simon Harvey, Fabrice Bartolomei, Pavel Krsek, Jean Gotman, André Palmini, François Dubeau, Alice Yu
Publikováno v: Jayakar, P, Gotman, J, Harvey, A S, Palmini, A, Tassi, L, Schomer, D, Dubeau, F, Bartolomei, F, Yu, A, Kršek, P, Velis, D & Kahane, P 2016, ' Diagnostic utility of invasive EEG for epilepsy surgery : Indications, modalities, and techniques ', Epilepsia, vol. 57, no. 11, pp. 1735-1747 . https://doi.org/10.1111/epi.13515
Epilepsia, 57(11), 1735-1747. Wiley-Blackwell
Epilepsia
Epilepsia, Wiley, 2016, 57 (11), pp.1735-1747. ⟨10.1111/epi.13515⟩
Repositório Institucional PUCRS
Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)
instacron:PUC_RS
Many patients with medically refractory epilepsy now undergo successful surgery based on noninvasive diagnostic information, but intracranial electroencephalography (IEEG) continues to be used as increasingly complex cases are considered surgical can
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::494f93a208f27d2ff2123c8c8fdae0d8
https://doi.org/10.1111/epi.13515
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9
Cortisol fluctuations relate to interictal epileptiform discharges in stress sensitive epilepsy
Autor: E. Lorraine Hompe, Kees P.J. Braun, Willem M. Otte, Jolien S. van Campen, Maeike Zijlmans, Gerhard H. Visser, Floor E. Jansen, Fia van de Berg, Marian Joëls, Demetrios N. Velis, Josemir W. Sander
Publikováno v: Brain, 139(6), 1673. Oxford University Press
Brain, 139, 1673-1679. Oxford University Press
van Campen, J S, Hompe, E L, Jansen, F E, Velis, D N, Otte, W M, van de Berg, F, Braun, K P J, Visser, G H, Sander, J W, Joels, M & Zijlmans, M 2016, ' Cortisol fluctuations relate to interictal epileptiform discharges in stress sensitive epilepsy ', Brain, vol. 139, pp. 1673-1679 . https://doi.org/10.1093/brain/aww071
People with epilepsy often report seizures precipitated by stress. This is believed to be due to effects of stress hormones, such as cortisol, on neuronal excitability. Cortisol, regardless of stress, is released in hourly pulses, whose effect on epi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19c8f68a8942248dc8e3d3f1bda2a830
https://doi.org/10.1093/brain/aww071
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10
Dynamics of convulsive seizure termination and postictal generalized EEG suppression
Autor: Fernando H. Lopes da Silva, Demetrios N. Velis, Robert J. Lamberts, Gerhard H. Visser, Roland D. Thijs, Stiliyan Kalitzin, Prisca R. Bauer, Josemir W. Sander, Else A. Tolner
Publikováno v: Brain, 140(3). Oxford University Press
Bauer, P R, Thijs, R D, Lamberts, R J, Velis, D N, Visser, G H, Tolner, E A, Sander, J W, Lopes da Silva, F H & Kalitzin, S N 2017, ' Dynamics of convulsive seizure termination and postictal generalized EEG suppression ', Brain : a journal of neurology, vol. 140, no. 3, pp. 655-668 . https://doi.org/10.1093/brain/aww322
Brain : a journal of neurology, 140(3), 655-668
Brain, 140, 655-668
It is not fully understood how seizures terminate and why some seizures are followed by a period of complete brain activity suppression, postictal generalized EEG suppression. This is clinically relevant as there is a potential association between po
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6670689368d0ed3479804162ef7efc9d
https://hdl.handle.net/1887/114698
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