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Aslak W. Bergersen
Researcher at Simula Research Laboratory
Publications - 16
Citations - 254
Aslak W. Bergersen is an academic researcher from Simula Research Laboratory. The author has contributed to research in topics: Direct numerical simulation & Aneurysm. The author has an hindex of 7, co-authored 15 publications receiving 165 citations. Previous affiliations of Aslak W. Bergersen include University of Oslo.
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Journal ArticleDOI
Real-World Variability in the Prediction of Intracranial Aneurysm Wall Shear Stress: The 2015 International Aneurysm CFD Challenge
Kristian Valen-Sendstad,Aslak W. Bergersen,Aslak W. Bergersen,Yuji Shimogonya,Leonid Goubergrits,Jan Bruening,Jordi Pallares,Salvatore Cito,Senol Piskin,Kerem Pekkan,A. J. Geers,Ignacio Larrabide,Saikiran Rapaka,Viorel Mihalef,Wenyu Fu,Aike Qiao,Kartik Jain,Kartik Jain,Kartik Jain,Sabine Roller,Kent-Andre Mardal,Kent-Andre Mardal,Ramji Kamakoti,Thomas Spirka,Neil Ashton,Alistair Revell,Nicolas Aristokleous,J. Graeme Houston,Masanori Tsuji,Fujimaro Ishida,Prahlad G. Menon,Leonard D. Browne,Stephen P. Broderick,Masaaki Shojima,Satoshi Koizumi,Michael Barbour,Alberto Aliseda,Hernán G. Morales,Thierry Lefevre,Simona Hodis,Yahia M. Al-Smadi,Justin Tran,Alison L. Marsden,Sreeja Vaippummadhom,G. Albert Einstein,Alistair G. Brown,Kristian Debus,Kuniyasu Niizuma,Sherif Rashad,Shin Ichiro Sugiyama,M. Owais Khan,Adam Updegrove,Shawn C. Shadden,Bart M. W. Cornelissen,Charles B. L. M. Majoie,Philipp Berg,Sylvia Saalfield,Kenichi Kono,David A. Steinman +58 more
TL;DR: While segmentation and CFD solver techniques may be difficult to standardize across groups, the findings suggest that some of the variability in image-based CFD could be reduced by establishing guidelines for model extents, inflow rates, and blood properties, and by encouraging the reporting of normalized hemodynamic parameters.
Journal ArticleDOI
Multiple Aneurysms AnaTomy CHallenge 2018 (MATCH): Phase I: Segmentation
Philipp Berg,Samuel Voß,Sylvia Saalfeld,Gábor Janiga,Aslak W. Bergersen,Kristian Valen-Sendstad,Jan Bruening,Leonid Goubergrits,Andreas Spuler,Nicole M. Cancelliere,David A. Steinman,Vitor Mendes Pereira,Tin Lok Chiu,Anderson Chun On Tsang,Bong Jae Chung,Juan R. Cebral,Salvatore Cito,Jordi Pallares,Gabriele Copelli,Benjamin Csippa,György Paál,Soichiro Fujimura,Soichiro Fujimura,Hiroyuki Takao,Hiroyuki Takao,Simona Hodis,Georg Hille,Christof Karmonik,Saba Elias,Kerstin Kellermann,Muhammad Owais Khan,Alison L. Marsden,Hernán G. Morales,Hernán G. Morales,Senol Piskin,Senol Piskin,Ender A. Finol,Mariya S. Pravdivtseva,Hamidreza Rajabzadeh-Oghaz,Nikhil Paliwal,Hui Meng,Santhosh Seshadhri,Matthew Howard,Masaaki Shojima,Shin Ichiro Sugiyama,Kuniyasu Niizuma,S. V. Sindeev,Sergey Frolov,Thomas Wagner,Alexander Brawanski,Yi Qian,Yu An Wu,Kent D. Carlson,Dan Dragomir-Daescu,Oliver Beuing +54 more
TL;DR: The study emphasizes the need for careful processing of initial segmentation results for a realistic assessment of clinically relevant morphological parameters in order to highlight the variability of surface reconstruction.
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The FDA nozzle benchmark: "In theory there is no difference between theory and practice, but in practice there is".
TL;DR: This study validated the Oasis CFD solver against in vitro experimental measurements of jet breakdown location from the FDA nozzle benchmark at Reynolds number 3500 to show that numerical simulations can agree with experiments, but for the wrong reasons.
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A Kirchhoff-Nernst-Planck framework for modeling large scale extracellular electrodiffusion surrounding morphologically detailed neurons.
Andreas Våvang Solbrå,Aslak W. Bergersen,Jonas van den Brink,Anders Malthe-Sørenssen,Gaute T. Einevoll,Gaute T. Einevoll,Geir Halnes +6 more
TL;DR: The present work uses the 3-D Kirchhoff-Nernst-Planck (KNP) framework to simulate the dynamics of ion concentrations and the electrical potential surrounding a morphologically detailed pyramidal cell, and elucidates the single neuron contribution to electrodiffusive effects in the ECS.
Journal ArticleDOI
Multiple Aneurysms AnaTomy CHallenge 2018 (MATCH)—phase II: rupture risk assessment
Philipp Berg,Samuel Voß,Gábor Janiga,Sylvia Saalfeld,Aslak W. Bergersen,Kristian Valen-Sendstad,Jan Bruening,Leonid Goubergrits,Andreas Spuler,Tin Lok Chiu,Anderson Chun On Tsang,Gabriele Copelli,Benjamin Csippa,György Paál,Gábor Závodszky,Felicitas J. Detmer,Bong Jae Chung,Juan R. Cebral,Soichiro Fujimura,Hiroyuki Takao,Christof Karmonik,Saba Elias,Nicole M. Cancelliere,Mehdi Najafi,David A. Steinman,Vitor Mendes Pereira,Senol Piskin,Ender A. Finol,Mariya S. Pravdivtseva,Prasanth Velvaluri,Hamidreza Rajabzadeh-Oghaz,Nikhil Paliwal,Hui Meng,Santhosh Seshadhri,Sreenivas Venguru,Masaaki Shojima,S. V. Sindeev,Sergey Frolov,Yi Qian,Yu An Wu,Kent D. Carlson,David F. Kallmes,Dan Dragomir-Daescu,Oliver Beuing +43 more
TL;DR: This challenge highlights the importance of multivariate analyses by combining clinically relevant metadata with advanced morphological and hemodynamic quantification in state-of-the-art blood flow simulation approaches to assess the rupture risk of IAs.