Karl G. Helmer

According to our database, Karl G. Helmer authored at least 13 papers between 2009 and 2023.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2023

NIDM-Terms: community-based terminology management for improved neuroimaging dataset descriptions and query.

Nazek Queder, Vivian B. Tien, Sanu Ann Abraham, Sebastian Georg Wenzel Urchs, Karl G. Helmer, Derek Chaplin, Theo G. M. van Erp, David N. Kennedy, Jean-Baptiste Poline, Jeffrey S. Grethe, Satrajit S. Ghosh, David B. Keator

Frontiers Neuroinformatics, March, 2023

2022

The Neuroimaging Data Model Linear Regression Tool (nidm_linreg): PyNIDM Project.

Ashmita Kumar, Albert Crowley, Nazek Queder, Jean-Baptiste Poline, Satrajit S. Ghosh, David N. Kennedy, Jeffrey S. Grethe, Karl G. Helmer, David B. Keator

F1000Research, 2022

2021

Multi-vendor and multisite evaluation of cerebrovascular reactivity mapping using hypercapnia challenge.

Peiying Liu, Dengrong Jiang, Marilyn Albert, Christopher E. Bauer, Arvind Caprihan, Brian T. Gold, Steven M. Greenberg, Karl G. Helmer, Kay Jann, Gregory Jicha, Pavel Rodriguez, Claudia L. Satizabal, Sudha Seshadri, Herpreet Singh, Jeffrey F. Thompson, Danny J. J. Wang, Hanzhang Lu

NeuroImage, 2021

2016

Multi-site study of diffusion metric variability: effects of site, vendor, field strength, and echo time on regions-of-interest and histogram-bin analyses.

Karl G. Helmer, M.-C. Chou, R. I. Preciado, Barjor Gimi, N. K. Rollins, A. Song, Jessica A. Turner, Susumu Mori

Proceedings of the Medical Imaging 2016: Biomedical Applications in Molecular, Structural, and Functional Imaging, San Diego, California, United States, 27 February, 2016

Multi-site study of diffusion metric variability: characterizing the effects of site, vendor, field strength, and echo time using the histogram distance.

Karl G. Helmer, M.-C. Chou, R. I. Preciado, Barjor Gimi, N. K. Rollins, A. Song, Jessica A. Turner, Susumu Mori

Proceedings of the Medical Imaging 2016: Biomedical Applications in Molecular, Structural, and Functional Imaging, San Diego, California, United States, 27 February, 2016

TransformDB: A Data Management System for Multimodal Imaging Data.

Karl G. Helmer, Qi Wang, Graham Warner

Proceedings of the AMIA 2016, 2016

2013

Towards structured sharing of raw and derived neuroimaging data across existing resources.

David B. Keator, Karl G. Helmer, Jason Steffener, Jessica A. Turner, Theo G. M. van Erp, Syam Gadde, Naveen Ashish, Gully A. P. C. Burns, B. Nolan Nichols

NeuroImage, 2013

2012

T₂* mapping and B₀ orientation-dependence at 7 T reveal cyto- and myeloarchitecture organization of the human cortex.

Julien Cohen-Adad, Jonathan R. Polimeni, Karl G. Helmer, Thomas Benner, Jennifer A. McNab, Lawrence L. Wald, Bruce R. Rosen, Caterina Mainero

NeuroImage, 2012

Data sharing in neuroimaging research.

Jean-Baptiste Poline, Janis L. Breeze, Satrajit S. Ghosh, Krzysztof J. Gorgolewski, Yaroslav O. Halchenko, Michael Hanke, Christian Haselgrove, Karl G. Helmer, David B. Keator, Daniel S. Marcus, Russell A. Poldrack, Yannick Schwartz, John Ashburner, David N. Kennedy

Frontiers Neuroinformatics, 2012

Towards structured sharing of raw and derived neuroimaging data across existing resources

David B. Keator, Karl G. Helmer, Jason Steffener, Jessica A. Turner, Theo G. M. van Erp, Syam Gadde, Naveen Ashish, Gully A. P. C. Burns, B. Nolan Nichols, Satrajit S. Ghosh

CoRR, 2012

MultiCenter Reliability of Diffusion Tensor Imaging.

Vincent Magnotta, Joy T. Matsui, Dawei Liu, Hans J. Johnson, Jeffrey D. Long, Bradley D. Bolster Jr., Bryon A. Mueller, Kelvin O. Lim, Susumu Mori, Karl G. Helmer, Jessica A. Turner, Sarah A. J. Reading, Mark J. Lowe, Elizabeth H. Aylward, Laura A. Flashman, Greg Bonett, Jane S. Paulsen

Brain Connect., 2012

2011

Enabling collaborative research using the Biomedical Informatics Research Network (BIRN).

Karl G. Helmer, José Luis Ambite, Joseph Ames, Rachana Ananthakrishnan, Gully Burns, Ann L. Chervenak, Ian T. Foster, Lee Liming, David B. Keator, Fabio Macciardi, Ravi K. Madduri, John-Paul Navarro, Steven G. Potkin, Bruce R. Rosen, Seth Ruffins, Robert Schuler, Jessica A. Turner, Arthur W. Toga, Christina Williams, Carl Kesselman

J. Am. Medical Informatics Assoc., 2011

2009

Regional white matter volume differences in nondemented aging and Alzheimer's disease.

David H. Salat, Douglas N. Greve, Jennifer L. Pacheco, Brian T. Quinn, Karl G. Helmer, Randy L. Buckner, Bruce Fischl

NeuroImage, 2009