Results 91 to 100 of about 672 (251)

Localized Quadratic RF Encoded Spin‐Echo With Spiral‐PRIME Reconstruction: A Practical Alternative to 3D FSE for High‐Resolution Volumetric Brain MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To extend localized quadratic (LQ) RF encoded spin‐echo imaging with acquisition and reconstruction strategies that improve efficiency and artifact robustness, positioning it as a practical alternative to 3D FSE for high‐resolution volumetric brain MRI.
Guruprasad Krishnamoorthy, Julia V. Velikina, James G. Pipe   +2 more
wiley   +1 more source

Multi‐Contrast Human Brain CEST MRI at 11.7 T: First In Vivo Demonstration

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT PurposeTo implement and evaluate chemical exchange saturation transfer (CEST) at ultra‐high field on a whole‐body 11.7 T scanner using parallel transmission (pTx). MethodsTailored pTx CEST saturation pulses were optimized to achieve a spatially uniform target B1+ while satisfying SAR and power constraints either defined by conservatively ...
Camélia Ressam, Joseph Brégeat, Alfredo L. Lopez Kolkovsky, Alexis Amadon, Alexandre Vignaud, Aurélien Massire, Son Chu, Shajan Gunamony, Nicolas Boulant, Vincent Gras, Franck Mauconduit, Luisa Ciobanu   +11 more
wiley   +1 more source

“Two‐For‐One”: 4D Cardiac and Pulmonary MR Imaging From a Single Acquisition Using bSTAR

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To generate 4D (3D+time) images of both the heart and lungs using a single volumetric radial free‐breathing bSSFP dual echo acquisition (bSTAR) with two image reconstructions within a single pipeline deployed inline at 0.55 and 1.5 T.
Pierre Daudé, Jordan Taylor, Joseph W. Plummer, Rajiv Ramasawmy, Anastasia Tsakirellis, Joel Moss, W. Patricia Bandettini, Marcus Chen, Adrienne E. Campbell‐Washburn, Ahsan Javed   +9 more
wiley   +1 more source

A 13.44-Bit Low-Power SAR ADC for Brain–Computer Interface Applications

Applied Sciences
This paper presents a successive approximation register analog-to-digital converter (SAR ADC) specifically optimized for brain–computer interface (BCI) applications.
Hongyuan Yang, Jiahao Cheong, Cheng Liu
doaj   +1 more source

Comparison of Amplitude‐ and Amplitude‐Frequency‐Modulated Pulses for Outer Volume Suppression in Cardiac MRI: Application to Myocardial T2$$ {T}_2 $$ Mapping

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate single‐ and dual‐band pulse modules for suppressing extra‐cardiac signal in cardiac MRI, and test their applicability for time‐efficient imaging with reduced FOV in myocardial T2$$ {T}_2 $$ mapping at 3 T. Methods Outer Volume Suppression (OVS) was implemented using two regional saturation slabs, along the phase‐encoding ...
Ayda Arami, Maša Božić‐Iven, Christal van de Steeg‐Henzen, Yidong Zhao, Yi Zhang, Qian Tao, Alexandru Cernicanu, Hildebrandus Johannes Lamb, Sebastian Weingärtner   +8 more
wiley   +1 more source

Human In Vivo Validation of Frequency‐Dependent QTI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The aim of this work is to investigate if q‐space trajectory imaging (QTI) waveforms can be designed to probe QTI metrics at a single centroid frequency under realistic experimental conditions for in vivo human brain imaging. Methods Realistic diffusion encoding waveforms based on double‐rotation gradient waveform and magic‐angle ...
Svenja Niesen, Marten Veldmann, Ali Ajouz, Tony Stöcker   +3 more
wiley   +1 more source

A Wireless, Mechanically Flexible, 25μm-Thick, 65,536-Channel Subdural Surface Recording and Stimulating Microelectrode Array with Integrated Antennas. [PDF]

2023 IEEE Symp VLSI Technol Circuits (2023), 2023
Zeng N, Jung T, Sharma M, Eichler G, Fabbri J, Cotton RJ, Spinazzi E, Youngerman B, Carloni L, Shepard KL.   +9 more
europepmc   +1 more source

Reference‐Superimposed Reconstruction (RS‐Recon) for Arterial Spin Labeling

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Conventional arterial spin labeling (ASL) reconstruction suffers from sign‐flipping errors and/or noise bias under strong background suppression (BS), limiting SNR optimization. We propose reference‐superimposed reconstruction (RS‐recon) to enable ideal BS and robust signal recovery.
Jia Guo
wiley   +1 more source

The impact of COVID‐19 on public perceptions of wild meat in Central Africa

People and Nature, EarlyView.
Abstract Wild meat is a significant source of food and income generation in Central Africa. However, there is little knowledge of how the assumed link between COVID‐19 and wild meat consumption has been discussed by the media and received by the public. In this study, we conducted media content analysis of 264 articles published in 2019–2020 related to
Yuhan Li, Lude Kinzonzi, Paul Loundou, Divin Malekani, Krossy Mavakala, Christian Mikolo Yobo, Katharine Abernethy, Matilda Eve Dunn, Donald Midoko Iponga, Robert Mwinyihali, Joss Wright, Eleanor Jane Milner‐Gulland, Lauren Coad, Juliet H. Wright, Daniel W. S. Challender   +14 more
wiley   +1 more source

Rehabilitation needs of long COVID patients in British Columbia

PM&R, EarlyView.
Abstract Introduction COVID‐19 can result in persistent symptoms and functional impairment that significantly impact daily functioning, highlighting the need for targeted rehabilitation. However, there is a lack of data on what proportion of long COVID patients need rehabilitation and which types are required.
Débora M. Petry Moecke, Evan H. Kwong, Sonya Cressman, Jennifer Yao, Chiara Singh, Carolyn Taylor, Pat G. Camp   +6 more
wiley   +1 more source