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1,165 results on '"Schneider, Jürgen"'

1. Cardiac diffusion-weighted and tensor imaging: A consensus statement from the special interest group of the Society for Cardiovascular Magnetic Resonance

Author

Dall’Armellina, Erica, Ennis, Daniel B., Axel, Leon, Croisille, Pierre, Ferreira, Pedro F., Gotschy, Alexander, Lohr, David, Moulin, Kevin, Nguyen, Christopher T., Nielles-Vallespin, Sonja, Romero, William, Scott, Andrew D., Stoeck, Christian, Teh, Irvin, Tunnicliffe, Elizabeth M., Viallon, Magalie, Wang, Victoria, Young, Alistair A., Schneider, Jürgen E., and Sosnovik, David E.

Published
2025
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3. Observing many researchers using the same data and hypothesis reveals a hidden universe of uncertainty

Author

Breznau, Nate, Rinke, Eike Mark, Wuttke, Alexander, Nguyen, Hung H. V., Adem, Muna, Adriaans, Jule, Alvarez-Benjumea, Amalia, Andersen, Henrik K., Auer, Daniel, Azevedo, Flavio, Bahnsen, Oke, Balzer, Dave, Bauer, Gerrit, Bauer, Paul C., Baumann, Markus, Baute, Sharon, Benoit, Verena, Bernauer, Julian, Berning, Carl, Berthold, Anna, Bethke, Felix S., Biegert, Thomas, Blinzler, Katharina, Blumenberg, Johannes N., Bobzien, Licia, Bohman, Andrea, Bol, Thijs, Bostic, Amie, Brzozowska, Zuzanna, Burgdorf, Katharina, Burger, Kaspar, Busch, Kathrin B., Carlos-Castillo, Juan, Chan, Nathan, Christmann, Pablo, Connelly, Roxanne, Czymara, Christian S., Damian, Elena, Ecker, Alejandro, Edelmann, Achim, Eger, Maureen A., Ellerbrock, Simon, Forke, Anna, Forster, Andrea, Gaasendam, Chris, Gavras, Konstantin, Gayle, Vernon, Gessler, Theresa, Gnambs, Timo, Godefroidt, Amélie, Grömping, Max, Groß, Martin, Gruber, Stefan, Gummer, Tobias, Hadjar, Andreas, Heisig, Jan Paul, Hellmeier, Sebastian, Heyne, Stefanie, Hirsch, Magdalena, Hjerm, Mikael, Hochman, Oshrat, Hövermann, Andreas, Hunger, Sophia, Hunkler, Christian, Huth, Nora, Ignácz, Zsófia S., Jacobs, Laura, Jacobsen, Jannes, Jaeger, Bastian, Jungkunz, Sebastian, Jungmann, Nils, Kauff, Mathias, Kleinert, Manuel, Klinger, Julia, Kolb, Jan-Philipp, Kołczyńska, Marta, Kuk, John, Kunißen, Katharina, Sinatra, Dafina Kurti, Langenkamp, Alexander, Lersch, Philipp M., Löbel, Lea-Maria, Lutscher, Philipp, Mader, Matthias, Madia, Joan E., Malancu, Natalia, Maldonado, Luis, Marahrens, Helge, Martin, Nicole, Martinez, Paul, Mayerl, Jochen, Mayorga, Oscar J., McManus, Patricia, McWagner, Kyle, Meeusen, Cecil, Meierrieks, Daniel, Mellon, Jonathan, Merhout, Friedolin, Merk, Samuel, Meyer, Daniel, Micheli, Leticia, Mijs, Jonathan, Moya, Cristóbal, Neunhoeffer, Marcel, Nüst, Daniel, Nygård, Olav, Ochsenfeld, Fabian, Otte, Gunnar, Pechenkina, Anna O., Prosser, Christopher, Raes, Louis, Ralston, Kevin, Ramos, Miguel R., Roets, Arne, Rogers, Jonathan, Ropers, Guido, Samuel, Robin, Sand, Gregor, Schachter, Ariela, Schaeffer, Merlin, Schieferdecker, David, Schlueter, Elmar, Schmidt, Regine, Schmidt, Katja M., Schmidt-Catran, Alexander, Schmiedeberg, Claudia, Schneider, Jürgen, Schoonvelde, Martijn, Schulte-Cloos, Julia, Schumann, Sandy, Schunck, Reinhard, Schupp, Jürgen, Seuring, Julian, Silber, Henning, Sleegers, Willem, Sonntag, Nico, Staudt, Alexander, Steiber, Nadia, Steiner, Nils, Sternberg, Sebastian, Stiers, Dieter, Stojmenovska, Dragana, Storz, Nora, Striessnig, Erich, Stroppe, Anne-Kathrin, Teltemann, Janna, Tibajev, Andrey, Tung, Brian, Vagni, Giacomo, Van Assche, Jasper, van der Linden, Meta, van der Noll, Jolanda, Van Hootegem, Arno, Vogtenhuber, Stefan, Voicu, Bogdan, Wagemans, Fieke, Wehl, Nadja, Werner, Hannah, Wiernik, Brenton M., Winter, Fabian, Wolf, Christof, Yamada, Yuki, Zhang, Nan, Ziller, Conrad, Zins, Stefan, and Żółtak, Tomasz

Published
2022

4. Improved compressed sensing and super-resolution of cardiac diffusion MRI with structure-guided total variation.

Author

Teh, Irvin, McClymont, Darryl, Carruth, Eric, Omens, Jeffrey, McCulloch, Andrew, and Schneider, Jürgen E

Subjects
Animals, Rats, Magnetic Resonance Imaging, Diffusion Magnetic Resonance Imaging, Retrospective Studies, Algorithms, Image Processing, Computer-Assisted, Diffusion Tensor Imaging, cardiac MRI, compressed sensing, diffusion kurtosis, diffusion tensor imaging, directional total variation, super-resolution, Cardiovascular, Biomedical Imaging, Bioengineering, Biomedical Engineering, Nuclear Medicine & Medical Imaging
Abstract

PurposeStructure-guided total variation is a recently introduced prior that allows reconstruction of images using knowledge of the location and orientation of edges in a reference image. In this work, we demonstrate the advantages of a variant of structure-guided total variation known as directional total variation (DTV), over traditional total variation (TV), in the context of compressed-sensing reconstruction and super-resolution.MethodsWe compared TV and DTV in retrospectively undersampled ex vivo diffusion tensor imaging and diffusion spectrum imaging data from healthy, sham, and hypertrophic rat hearts.ResultsIn compressed sensing at an undersampling factor of 8, the RMS error of mean diffusivity and fractional anisotropy relative to the fully sampled ground truth were 44% and 20% lower in DTV compared with TV. In super-resolution, these values were 29% and 14%, respectively. Similarly, we observed improvements in helix angle, transverse angle, sheetlet elevation, and sheetlet azimuth. The RMS error of the diffusion kurtosis in the undersampled data relative to the ground truth was uniformly lower (22% on average) with DTV compared to TV.ConclusionAcquiring one fully sampled non-diffusion-weighted image and 10 diffusion-weighted images at 8× undersampling would result in an 80% net reduction in data needed. We demonstrate efficacy of the DTV algorithm over TV in reducing data sampling requirements, which can be translated into higher apparent resolution and potentially shorter scan times. This method would be equally applicable in diffusion MRI applications outside the heart.

Published
2020

5. Facilitating Open Science Practices for Research Syntheses: PreregRS Guides Preregistration

Author

Schneider, Jürgen, Backfisch, Iris, and Lachner, Andreas

Abstract

Researchers increasingly engage in adopting open science practices in the field of research syntheses, such as preregistration. Preregistration is a central open science practice in empirical research to enhance transparency in the research process and it gains steady adoption in the context of conducting research synthesis. From an interdisciplinary perspective, frameworks and particularly templates are lacking which support researchers preparing a preregistration. To this end, we introduce preregRS, a template to guide researchers across disciplines through the process of preregistering research syntheses. We utilized an R Markdown template file to provide a framework that structures the process of preparing a preregistration. Researchers can write up the preregistration using the template file similar to filling out a form, with the template providing additional hints and further information for the decisions along the framework. We integrated the R Markdown template in an R package for easy installation and use, but also provide a browser-based option for users granting low-barrier access. PreregRS constitutes a first step to facilitate and support preregistration with research syntheses for all disciplines. It further adds to establishing open science practices in conducting research syntheses.

Published
2022
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8. PEGylation of indium phosphide quantum dots prevents quantum dot mediated platelet activation.

Author

Naylor-Adamson, Leigh, Price, Thomas W., Booth, Zoe, Leonard, Sophie V. L., Gallo, Juan, Tung, Le Duc, Harvell-Smith, Stanley, Thi Kim Thanh, Nguyen, Aslam, Zabeada, Allsup, David, Hondow, Nicole, Chamberlain, Thomas, Schneider, Jürgen E., Naseem, Khalid, Bouillard, Jean-Sebastien G., Stasiuk, Graeme J., and Calaminus, Simon D. J.

Abstract

Quantum dots (QDs) are semiconducting inorganic nanocrystals, that have garnered interest in biological and medical spheres due, to their potential benefits in biomedical imaging and drug-delivery systems. Indium phosphide QDs shelled with zinc sulphide (InP/ZnS) are viewed as more biocompatible than previous heavy metal based QDs. However, little is known about how InP/ZnS QDs affect a key blood cell, the platelet. Understanding how platelets interact with QDs is critical as unwanted activation can lead to pathological thrombus formation. Herein, we demonstrate PEGylation of InP/ZnS QDs coated with lipoic acid (QD-LA) or coated with penicillamine (QD-Pen) surface ligands induced markedly less platelet aggregation, platelet–QD interactions, integrin activation, alpha granule secretion and restored platelet spreading in washed platelets in comparison to their non-PEGylated counterparts. Furthermore, in whole blood, PEGylation of QDs reduced the number of QDs in the thrombus, thereby helping to minimise the chance of dysfunctional thrombus formation. Overall, we show that QD PEGylation is important to help prevent QD mediated platelet activation. In combination with the most biocompatible coating, PEGylation markedly reduced platelet activation, widening the concentrations at which QDs were viable for development as potential drug delivery or imaging agents. [ABSTRACT FROM AUTHOR]

Published
2025
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11. Exploring DTI Benchmark Databases Through Visual Analytics

Author

Romero R., William A., Althviz Moré, Daniel, Teh, Irvin, E. Schneider, Jürgen, Viallon, Magalie, Croisille, Pierre, Hege, Hans-Christian, Series Editor, Hoffman, David, Series Editor, Johnson, Christopher R., Series Editor, Polthier, Konrad, Series Editor, Gyori, Noemi, editor, Hutter, Jana, editor, Nath, Vishwesh, editor, Palombo, Marco, editor, Pizzolato, Marco, editor, and Zhang, Fan, editor

Published
2021
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14. On the correction of spiral trajectories on a preclinical MRI scanner with a high‐performance gradient insert.

Author

Scholten, Hannah, Wech, Tobias, Köhler, Sascha, Smart, Sean S., Boyle, Jordan H., Teh, Irvin, Köstler, Herbert, and Schneider, Jürgen E.

Subjects
TRAJECTORY measurements, OPTICAL scanners, IMPULSE response, TRANSFER functions, SCANNING systems
Abstract

This study aimed to examine different trajectory correction methods for spiral imaging on a preclinical scanner with high‐performance gradients with respect to image quality in a phantom and in vivo. The gold standard method of measuring the trajectories in a separate experiment is compared to an isotropic delay‐correction, a correction using the gradient system transfer function (GSTF), and a combination of the two. Three different spiral trajectories, with 96, 16, and three interleaves, are considered. The best image quality is consistently achieved when determining the trajectory in a separate phantom measurement. However, especially for the spiral with 96 interleaves, the other correction methods lead to almost comparable results. Remaining imperfections in the corrected gradient waveforms and trajectories are attributed to asymmetrically occurring undulations in the actual, generated gradients, suggesting that the underlying assumption of linearity is violated. In conclusion, images of sufficient quality can be acquired on preclinical small‐animal scanners using spiral k‐space trajectories without the need to carry out separate trajectory measurements each time. Depending on the trajectory, a simple isotropic delay‐correction or a GSTF‐based correction can provide images of similar quality. [ABSTRACT FROM AUTHOR]

Published
2024
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15. In vivo diffusion MRI of the human heart using a 300 mT/m gradient system

Author

Afzali, Maryam, primary, Mueller, Lars, additional, Coveney, Sam, additional, Fasano, Fabrizio, additional, Evans, Christopher John, additional, Engel, Maria, additional, Szczepankiewicz, Filip, additional, Teh, Irvin, additional, Dall'Armellina, Erica, additional, Jones, Derek K., additional, and Schneider, Jürgen E., additional

Published
2024
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25. Dissecting the Genetic Complexity of Human 6p Deletion Syndromes by Using a Region-Specific, Phenotype-Driven Mouse Screen

Author

Bogani, Debora, Willoughby, Catherine, Davies, Jennifer, Kaur, Kulvinder, Mirza, Ghazala, Paudyal, Anju, Haines, Heather, McKeone, Richard, Cadman, Matthew, Pieles, Guido, Schneider, Jürgen E., Bhattacharya, Shoumo, Hardy, Andrea, Nolan, Patrick M., Tripodis, Nikos, Depew, Michael J., Chandrasekara, Ramya, Duncan, Gimara, Sharpe, Paul T., Greenfield, Andy, Denny, Paul, Ragoussis, Jiannis, Arkell, Ruth M., and Anderson, Kathryn V.

Published
2005

26. Reconstruction of 3D Cardiac MR Images from 2D Slices Using Directional Total Variation

Author

Basty, Nicolas, McClymont, Darryl, Teh, Irvin, Schneider, Jürgen E., Grau, Vicente, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Cardoso, M. Jorge, editor, Arbel, Tal, editor, Gao, Fei, editor, Kainz, Bernhard, editor, van Walsum, Theo, editor, Shi, Kuangyu, editor, Bhatia, Kanwal K., editor, Peter, Roman, editor, Vercauteren, Tom, editor, Reyes, Mauricio, editor, Dalca, Adrian, editor, Wiest, Roland, editor, Niessen, Wiro, editor, and Emmer, Bart J., editor

Published
2017
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27. Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets

Author

Gil, Hélio M., primary, Booth, Zoe, additional, Price, Thomas W., additional, Lee, Jessica, additional, Naylor‐Adamson, Leigh, additional, Avery, Michelle, additional, Muravitskaya, Alina, additional, Hondow, Nicole, additional, Allsup, David, additional, Schneider, Jürgen E., additional, Naseem, Khalid, additional, Adawi, Ali M., additional, Bouillard, Jean‐Sebastien G., additional, Chamberlain, Thomas W., additional, Calaminus, Simon D. J., additional, and Stasiuk, Graeme J., additional

Published
2023
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37. Sensitivity Analysis of Diffusion Tensor MRI in Simulated Rat Myocardium

Author

Bates, Joanne, Teh, Irvin, Kohl, Peter, Schneider, Jürgen E., Grau, Vicente, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, van Assen, Hans, editor, Bovendeerd, Peter, editor, and Delhaas, Tammo, editor

Published
2015
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42. MapOSR - A mapping review dataset of empirical studies on Open Science

Author

Lasser, Jana, Schneider, Jürgen, Lösch, Thomas, Röwert, Ronny, Heck, Tamara, Bluemel, Clemens, Neufend, Maike, Steinhardt, Isabel, Skupien, Stefan, Lasser, Jana, Schneider, Jürgen, Lösch, Thomas, Röwert, Ronny, Heck, Tamara, Bluemel, Clemens, Neufend, Maike, Steinhardt, Isabel, and Skupien, Stefan

Abstract

Research that investigates respective researchers’ engagement in Open Science varies widely in the topics addressed, methods employed, and disciplines investigated, which makes it difficult to integrate and compare its results. To investigate current outcomes of Open Science research, and to get a better understanding on well-researched topics and research gaps, we aimed at providing an openly accessible overview of empirical studies that focus on different aspects of Open Science in different scientific disciplines, academic groups and geographical regions. In this paper, we describe a data set of studies about Open Science practices retrieved following a PRISMA approach to compile a literature review. We included studies from the Scopus and Web of Science databases with keywords relating to Open Science between the years 2000 and 2020, as well as a snowball search for relevant articles. Studies that did not investigate any aspect of Open Science, or weren’t peer-reviewed were excluded, resulting in a total of 695 remaining studies. The data set was collaboratively annotated to ensure intercoder reliability of the coded data.

Published
2023

45. Einleitung

Author

Schneider, Jürgen, Ahlheim, Michael, editor, and Schneider, Jürgen

Published
2001
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