Search Results - "Wald, L"

Low‐cost and portable MRI by Wald, Lawrence L., McDaniel, Patrick C., Witzel, Thomas, Stockmann, Jason P., Cooley, Clarissa Zimmerman

“…Research in MRI technology has traditionally expanded diagnostic benefit by developing acquisition techniques and instrumentation to enable MRI scanners to…”
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A computational atlas of the hippocampal formation using ex vivo, ultra-high resolution MRI: Application to adaptive segmentation of in vivo MRI by Iglesias, Juan Eugenio, Augustinack, Jean C., Nguyen, Khoa, Player, Christopher M., Player, Allison, Wright, Michelle, Roy, Nicole, Frosch, Matthew P., McKee, Ann C., Wald, Lawrence L., Fischl, Bruce, Van Leemput, Koen

“…Automated analysis of MRI data of the subregions of the hippocampus requires computational atlases built at a higher resolution than those that are typically…”
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Optogenetically Induced Behavioral and Functional Network Changes in Primates by Gerits, Annelies, Farivar, Reza, Rosen, Bruce R., Wald, Lawrence L., Boyden, Edward S., Vanduffel, Wim

“…Optogenetics is currently the state-of-the-art method for causal-oriented brain research. Despite an increasingly large number of invertebrate and rodent…”
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Synthesis of Multispectral Images to High Spatial Resolution: A Critical Review of Fusion Methods Based on Remote Sensing Physics by Thomas, C., Ranchin, T., Wald, L., Chanussot, J.

“…Our framework is the synthesis of multispectral images (MS) at higher spatial resolution, which should be as close as possible to those that would have been…”
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Effects of image reconstruction on fiber orientation mapping from multichannel diffusion MRI: Reducing the noise floor using SENSE by Sotiropoulos, S. N., Moeller, S., Jbabdi, S., Xu, J., Andersson, J. L., Auerbach, E. J., Yacoub, E., Feinberg, D., Setsompop, K., Wald, L. L., Behrens, T. E. J., Ugurbil, K., Lenglet, C.

“…Purpose To examine the effects of the reconstruction algorithm of magnitude images from multichannel diffusion MRI on fiber orientation estimation. Theory and…”
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Organization of high-level visual cortex in human infants by Deen, Ben, Richardson, Hilary, Dilks, Daniel D., Takahashi, Atsushi, Keil, Boris, Wald, Lawrence L., Kanwisher, Nancy, Saxe, Rebecca

“…How much of the structure of the human mind and brain is already specified at birth, and how much arises from experience? In this article, we consider the test…”
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Improving diffusion MRI using simultaneous multi-slice echo planar imaging by Setsompop, K., Cohen-Adad, J., Gagoski, B.A., Raij, T., Yendiki, A., Keil, B., Wedeen, V.J., Wald, L.L.

“…In diffusion MRI, simultaneous multi-slice single-shot EPI acquisitions have the potential to increase the number of diffusion directions obtained per unit…”
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TArgeted Motion Estimation and Reduction (TAMER): Data Consistency Based Motion Mitigation for MRI Using a Reduced Model Joint Optimization by Haskell, Melissa W., Cauley, Stephen F., Wald, Lawrence L.

“…We introduce a data consistency based retrospective motion correction method, TArgeted Motion Estimation and Reduction (TAMER), to correct for patient motion…”
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Wave-CAIPI for highly accelerated 3D imaging by Bilgic, Berkin, Gagoski, Borjan A., Cauley, Stephen F., Fan, Audrey P., Polimeni, Jonathan R., Grant, P. Ellen, Wald, Lawrence L., Setsompop, Kawin

“…Purpose To introduce the wave‐CAIPI (controlled aliasing in parallel imaging) acquisition and reconstruction technique for highly accelerated 3D imaging with…”
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Network Accelerated Motion Estimation and Reduction (NAMER): Convolutional neural network guided retrospective motion correction using a separable motion model by Haskell, Melissa W., Cauley, Stephen F., Bilgic, Berkin, Hossbach, Julian, Splitthoff, Daniel N., Pfeuffer, Josef, Setsompop, Kawin, Wald, Lawrence L.

“…Purpose We introduce and validate a scalable retrospective motion correction technique for brain imaging that incorporates a machine learning component into a…”
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3D Echo Planar Time-resolved Imaging (3D-EPTI) for ultrafast multi-parametric quantitative MRI by Wang, Fuyixue, Dong, Zijing, Reese, Timothy G., Rosen, Bruce, Wald, Lawrence L., Setsompop, Kawin

“…•Ultra-fast acquisition for 3D multi-parametric quantitative MRI.•Simultaneous T1 T2 T2* PD and B1+ mapping.•3-minute scan at 1-mm isotropic resolution with…”
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Laminar analysis of 7T BOLD using an imposed spatial activation pattern in human V1 by Polimeni, Jonathan R., Fischl, Bruce, Greve, Douglas N., Wald, Lawrence L.

“…With sufficient image encoding, high-resolution fMRI studies are limited by the biological point-spread of the hemodynamic signal. The extent of this spread is…”
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Local SAR near deep brain stimulation (DBS) electrodes at 64 and 127 MHz: A simulation study of the effect of extracranial loops by Golestanirad, Laleh, Angelone, Leonardo M., Iacono, Maria Ida, Katnani, Husam, Wald, Lawrence L., Bonmassar, Giorgio

“…Purpose MRI may cause brain tissue around deep brain stimulation (DBS) electrodes to become excessively hot, causing lesions. The presence of extracranial…”
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Pushing the spatio-temporal limits of MRI and fMRI by Yacoub, Essa, Wald, Lawrence L.

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Direct normal irradiance related definitions and applications: The circumsolar issue by Blanc, P., Espinar, B., Geuder, N., Gueymard, C., Meyer, R., Pitz-Paal, R., Reinhardt, B., Renné, D., Sengupta, M., Wald, L., Wilbert, S.

“…•Review of existing definitions related to direct normal irradiance (DNI).•Review of applications and measurement techniques of DNI.•Expert consensus on clear…”
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The future of acquisition speed, coverage, sensitivity, and resolution by Wald, Lawrence L.

“…Two decades of technology development has continually improved the image quality, spatial–temporal resolution, and sensitivity of the fMRI acquisition. In this…”
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Reconfigurable MRI coil technology can substantially reduce RF heating of deep brain stimulation implants: First in-vitro study of RF heating reduction in bilateral DBS leads at 1.5 T by Golestanirad, Laleh, Kazemivalipour, Ehsan, Keil, Boris, Downs, Sean, Kirsch, John, Elahi, Behzad, Pilitsis, Julie, Wald, Lawrence L

“…Patients with deep brain stimulation (DBS) implants can significantly benefit from magnetic resonance imaging (MRI), however access to MRI is restricted in…”
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Local specific absorption rate (SAR), global SAR, transmitter power, and excitation accuracy trade-offs in low flip-angle parallel transmit pulse design by Guérin, Bastien, Gebhardt, Matthias, Cauley, Steven, Adalsteinsson, Elfar, Wald, Lawrence L.

“…Purpose We propose a constrained optimization approach for designing parallel transmit (pTx) pulses satisfying all regulatory and hardware limits. We study the…”
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The SG2 algorithm for a fast and accurate computation of the position of the Sun for multi-decadal time period by Blanc, Ph, Wald, L.

“…► SG2: A new fast algorithm for Sun position with accuracy c. 0.0015° for 1980–2030. ► General methodology to meet other accuracy level and period of validity…”
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The Human Connectome Project and beyond: Initial applications of 300mT/m gradients by McNab, Jennifer A., Edlow, Brian L., Witzel, Thomas, Huang, Susie Y., Bhat, Himanshu, Heberlein, Keith, Feiweier, Thorsten, Liu, Kecheng, Keil, Boris, Cohen-Adad, Julien, Tisdall, M. Dylan, Folkerth, Rebecca D., Kinney, Hannah C., Wald, Lawrence L.

“…The engineering of a 3T human MRI scanner equipped with 300mT/m gradients – the strongest gradients ever built for an in vivo human MRI scanner – was a major…”
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