Search Results - "Helmer, G"

Multi-vendor and multisite evaluation of cerebrovascular reactivity mapping using hypercapnia challenge by Liu, Peiying, Jiang, Dengrong, Albert, Marilyn, Bauer, Christopher E., Caprihan, Arvind, Gold, Brian T., Greenberg, Steven M., Helmer, Karl G., Jann, Kay, Jicha, Gregory, Rodriguez, Pavel, Satizabal, Claudia L., Seshadri, Sudha, Singh, Herpreet, Thompson, Jeffrey F., Wang, Danny J.J., Lu, Hanzhang

“…Cerebrovascular reactivity (CVR), which measures the ability of cerebral blood vessels to dilate or constrict in response to vasoactive stimuli such as CO2…”
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Demonstration of nonlinearity bias in the measurement of the apparent diffusion coefficient in multicenter trials by Malyarenko, Dariya I., Newitt, David, J. Wilmes, Lisa, Tudorica, Alina, Helmer, Karl G., Arlinghaus, Lori R., Jacobs, Michael A., Jajamovich, Guido, Taouli, Bachir, Yankeelov, Thomas E., Huang, Wei, Chenevert, Thomas L.

“…Purpose Characterize system‐specific bias across common magnetic resonance imaging (MRI) platforms for quantitative diffusion measurements in multicenter…”
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Data sharing in neuroimaging research by Poline, Jean-Baptiste, Breeze, Janis L, Ghosh, Satrajit, Gorgolewski, Krzysztof, Halchenko, Yaroslav O, Hanke, Michael, Haselgrove, Christian, Helmer, Karl G, Keator, David B, Marcus, Daniel S, Poldrack, Russell A, Schwartz, Yannick, Ashburner, John, Kennedy, David N

“…Significant resources around the world have been invested in neuroimaging studies of brain function and disease. Easier access to this large body of work…”
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NIDM-Terms: community-based terminology management for improved neuroimaging dataset descriptions and query by Queder, Nazek, Tien, Vivian B, Abraham, Sanu Ann, Urchs, Sebastian Georg Wenzel, Helmer, Karl G, Chaplin, Derek, van Erp, Theo G M, Kennedy, David N, Poline, Jean-Baptiste, Grethe, Jeffrey S, Ghosh, Satrajit S, Keator, David B

“…The biomedical research community is motivated to share and reuse data from studies and projects by funding agencies and publishers. Effectively combining and…”
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Characterization of Diffusion Metric Map Similarity in Data From a Clinical Data Repository Using Histogram Distances by Warner, Graham C, Helmer, Karl G

“…As the sharing of data is mandated by funding agencies and journals, reuse of data has become more prevalent. It becomes imperative, therefore, to develop…”
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Instrumental validation of free water, peak‐width of skeletonized mean diffusivity, and white matter hyperintensities: MarkVCID neuroimaging kits by Maillard, Pauline, Lu, Hanzhang, Arfanakis, Konstantinos, Gold, Brian T., Bauer, Christopher E., Zachariou, Valentinos, Stables, Lara, Wang, Danny J.J., Jann, Kay, Seshadri, Sudha, Duering, Marco, Hillmer, Laura J., Rosenberg, Gary A., Snoussi, Haykel, Sepehrband, Farshid, Habes, Mohamad, Singh, Baljeet, Kramer, Joel H., Corriveau, Roderick A., Singh, Herpreet, Schwab, Kristin, Helmer, Karl G., Greenberg, Steven M., Caprihan, Arvind, DeCarli, Charles, Satizabal, Claudia L.

“…Introduction To describe the protocol and findings of the instrumental validation of three imaging‐based biomarker kits selected by the MarkVCID consortium:…”
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The Neuroimaging Data Model Linear Regression Tool (nidm_linreg): PyNIDM Project [version 1; peer review: 1 approved with reservations, 1 not approved] by Kumar, Ashmita, Crowley, Albert, Queder, Nazek, Poline, JB, Ghosh, Satrajit S, Kennedy, David, Grethe, Jeffrey S, Helmer, Karl G, Keator, David B

“…The Neuroimaging Data Model (NIDM) is a series of specifications for describing all aspects of the neuroimaging data lifecycle from raw data to analyses and…”
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Separating changes in the intra- and extracellular water apparent diffusion coefficient following focal cerebral ischemia in the rat brain by Silva, Matthew D., Omae, Tsuyoshi, Helmer, Karl G., Li, Fuhai, Fisher, Marc, Sotak, Christopher H.

“…Selective intracellular (IC) and extracellular (EC) brain water apparent diffusion coefficient (ADC) values were measured in normal and ischemic rat brain…”
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Multispectral tissue characterization in a RIF-1 tumor model: Monitoring the ADC and T2 responses to single-dose radiotherapy. Part II by Henning, Erica C., Azuma, Chieko, Sotak, Christopher H., Helmer, Karl G.

“…A multispectral (MS) approach that combines apparent diffusion coefficient (ADC) and T2 parameter maps with k‐means (KM) clustering was employed to distinguish…”
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Water movement in tendon in response to a repeated static tensile load using one-dimensional magnetic resonance imaging by Helmer, K G, Nair, G, Cannella, M, Grigg, P

“…Rabbit Achilles tendons (N = 8) were subjected to tensile loading while internal water movements were followed using NMR. The distribution of the internal…”
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Transformer-based deep learning denoising of single and multi-delay 3D arterial spin labeling by Shou, Qinyang, Zhao, Chenyang, Shao, Xingfeng, Jann, Kay, Kim, Hosung, Helmer, Karl G, Lu, Hanzhang, Wang, Danny J J

“…To present a Swin Transformer-based deep learning (DL) model (SwinIR) for denoising single-delay and multi-delay 3D arterial spin labeling (ASL) and compare…”
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Microstructural status of ipsilesional and contralesional corticospinal tract correlates with motor skill in chronic stroke patients by Schaechter, Judith D., Fricker, Zachary P., Perdue, Katherine L., Helmer, Karl G., Vangel, Mark G., Greve, Douglas N., Makris, Nikos

“…Greater loss in structural integrity of the ipsilesional corticospinal tract (CST) is associated with poorer motor outcome in patients with hemiparetic stroke…”
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The role of spreading depression in focal ischemia evaluated by diffusion mapping by Takano, K, Latour, L L, Formato, J E, Carano, R A, Helmer, K G, Hasegawa, Y, Sotak, C H, Fisher, M

“…This study investigated the role of spontaneous and induced spreading depression (SD) on the evolution of focal ischemia in vivo. We induced focal ischemia in…”
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GLPG1205 for idiopathic pulmonary fibrosis: a phase 2 randomised placebo-controlled trial by Strambu, Irina R, Seemayer, Christian A, Fagard, Liesbeth M-C A, Ford, Paul A, Van der Aa, Tom A K, de Haas-Amatsaleh, Angela A, Modgill, Vikas, Santermans, Eva, Sondag, Eric N, Helmer, Eric G, Maher, Toby M, Costabel, Ulrich, Cottin, Vincent

“…GLPG1205 is a selective functional antagonist of G-protein-coupled receptor 84, which plays an important role in fibrotic processes. This study assessed the…”
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Birth of the Topological Atlas and Repository for Acupoint Research by Napadow, Vitaly, Harris, Richard E, Helmer, Karl G

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MarkVCID cerebral small vessel consortium: II. Neuroimaging protocols by Lu, Hanzhang, Kashani, Amir H., Arfanakis, Konstantinos, Caprihan, Arvind, DeCarli, Charles, Gold, Brian T., Li, Yang, Maillard, Pauline, Satizabal, Claudia L., Stables, Lara, Wang, Danny J. J., Corriveau, Roderick A., Singh, Herpreet, Smith, Eric E., Fischl, Bruce, Kouwe, Andre, Schwab, Kristin, Helmer, Karl G., Greenberg, Steven M.

“…The MarkVCID consortium was formed under cooperative agreements with the National Institute of Neurologic Diseases and Stroke (NINDS) and National Institute on…”
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MarkVCID cerebral small vessel consortium: I. Enrollment, clinical, fluid protocols by Wilcock, Donna, Jicha, Gregory, Blacker, Deborah, Albert, Marilyn S., D'Orazio, Lina M., Elahi, Fanny M., Fornage, Myriam, Hinman, Jason D., Knoefel, Janice, Kramer, Joel, Kryscio, Richard J., Lamar, Melissa, Moghekar, Abhay, Prestopnik, Jillian, Ringman, John M., Rosenberg, Gary, Sagare, Abhay, Satizabal, Claudia L., Schneider, Julie, Seshadri, Sudha, Sur, Sandeepa, Tracy, Russell P., Yasar, Sevil, Williams, Victoria, Singh, Herpreet, Mazina, Lidiya, Helmer, Karl G., Corriveau, Roderick A., Schwab, Kristin, Kivisäkk, Pia, Greenberg, Steven M.

“…The concept of vascular contributions to cognitive impairment and dementia (VCID) derives from more than two decades of research indicating that (1) most older…”
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Regional white matter volume differences in nondemented aging and Alzheimer's disease by Salat, David H., Greve, Douglas N., Pacheco, Jennifer L., Quinn, Brian T., Helmer, Karl G., Buckner, Randy L., Fischl, Bruce

“…Accumulating evidence suggests that altered cerebral white matter (WM) influences normal aging, and further that WM degeneration may modulate the clinical…”
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Multispectral analysis of the temporal evolution of cerebral ischemia in the rat brain by Carano, Richard A.D., Li, Fuhai, Irie, Katsumi, Helmer, Karl G., Silva, Matthew D., Fisher, Marc, Sotak, Christopher H.

“…A major difficulty in staging and predicting ischemic brain injury by magnetic resonance (MR) imaging is the time‐varying nature of the MR parameters within…”
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DT‐02‐05: MARKVCID PHASE II: PRIORITIZED CANDIDATE SMALL VESSEL VCID BIOMARKERS SELECTED FOR INDEPENDENT MULTI‐SITE TESTING AND VALIDATION by Corriveau, Roderick A., Mcgavern, Linda, Albert, Marilyn S., Arfanakis, Konstantinos, Arvind, Caprihan, DeCarli, Charlie S., Fornage, Myriam, Helmer, Karl G., Jicha, Gregory A., Kashani, Amir H., Kramer, Joel H., Lu, Hanzhang, Ringman, John M., Rosenberg, Gary A., Schneider, Julie A., Schwab, Kristin, Seshadri, Sudha, Tracy, Russell, Wang, Danny JJ, Wilcock, Donna M., Greenberg, Steven M.

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