Results 81 to 90 of about 136 (122)

Optimized Gradient Waveforms for Tensor‐Valued Diffusion MRI Under Time‐Dependent Diffusion Using Double‐Isotropic Matched Encoding (DIME)

Magnetic Resonance in Medicine, Volume 97, Issue 1, Page 225-239, January 2027.
ABSTRACT Purpose Spherical and linear b‐tensor encoding (STE and LTE) enables quantification of microscopic diffusion anisotropy and diffusional variance. However, such waveforms are often variably sensitive to time‐dependent diffusion, causing rotational variance and spectral mismatch.
Felix Mortensen, Viktor Olsson, Athanasios Grigoriou, Samo Lasič, Malwina Molendowska, Ronnie Wirestam, Filip Szczepankiewicz   +6 more
wiley   +1 more source

From Physiology to Bioheat Simulation: A Data‐Driven Framework for Core Temperature Initialization

Heat Transfer, Volume 55, Issue 8, Page 5198-5228, December 2026.
ABSTRACT Accurate initialization of core body temperature is a critical yet often overlooked component of bioheat transfer models, particularly when such models are applied to heterogeneous populations and real‐world environmental conditions. Conventional bioheat simulations typically rely on fixed or idealized core body temperature values derived from
David S. Rodríguez, Ana S. Acosta, Carol D. Vergara, Daniela Martínez, Sebastián Bermúdez, Cristian F. Rodríguez, Juan C. Cruz   +6 more
wiley   +1 more source

Human In Vivo Validation of Frequency‐Dependent QTI

Magnetic Resonance in Medicine, Volume 96, Issue 6, Page 2642-2659, December 2026.
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

An Open‐Source, Reproducible MRI Data Acquisition and Reconstruction Workflow Using Pulseq: Multi‐Site and Cross‐Vendor Validation

Magnetic Resonance in Medicine, Volume 96, Issue 6, Page 2721-2738, December 2026.
ABSTRACT Purpose Reproducibility in MRI is limited by variability in data acquisition, formatting, and reconstruction across sites and vendors. This work aimed to mitigate these challenges through an open‐source, vendor‐independent workflow originally developed for the 2023–24 ISMRM Repeat It with Me: Reproducibility Team Challenge.
Qingping Chen, Thomas H. M. Roos, Amaya Murguia, Yuhai Xie, Zheng Liu, Pengcheng Xu, Shohei Fujita, Sebastian Littin, Yogesh Rathi, Jiayu Zhu, Berkin Bilgic, Jon‐Fredrik Nielsen, Maxim Zaitsev   +12 more
wiley   +1 more source

Quantitative Chemical Exchange Saturation Transfer Imaging With Golden‐Angle Radial k‐Space Sampling and Locally Low‐Rank Reconstruction

NMR in Biomedicine, Volume 39, Issue 12, December 2026.
A radial CEST‐MR Fingerprinting method is demonstrated that avoids EPI distortion using low‐rank reconstruction and neural network quantification. It produced accurate 3D brain CEST maps in 11 min, with simulation errors below 14%, strong agreement with conventional fitting, high reproducibility (ICC up to 0.92), and limited motion‐related errors.
Ouri Cohen, Elizabeth J. Sutton, Robert J. Young, Ricardo Otazo   +3 more
wiley   +1 more source

Cortical Hierarchical Disorganization and Transcriptomic Associations in Multiple Sclerosis and Neuromyelitis Optica Spectrum Disorders Revealed by Morphometric INverse Divergence Network Gradients

CNS Neuroscience &Therapeutics, Volume 32, Issue 11, November 2026.
Cortical morphometric gradient analyses suggest regional alterations in multiple sclerosis and neuromyelitis optica spectrum disorder and reveal regional associations with cognitive performance. Integrative transcriptomic analyses suggest shared and divergent molecular signatures, providing insights into the biological context of cortical organization ...
Yingying Xie, Shiqi Lin, Jie Sun, Han Zhang, Jiaojiao Du, Zhang Zhang, Bohong Zou, Dairong Cao, Ningnannan Zhang   +8 more
wiley   +1 more source

Design and Implementation of an Automated Wheelchair With Voice and Gesture Control, Obstacle Avoidance, and Real‐Time Location Sharing

Engineering Reports, Volume 8, Issue 11, November 2026.
This work presents a standalone smart wheelchair featuring dual voice‐ and gesture‐based control, obstacle avoidance, and real‐time location sharing. The system achieves 100% gesture accuracy and 94% voice accuracy, enabling safe, independent mobility for users with severe physical impairments and providing emergency support without smartphone ...
Md Nurul Huda Rifat, S. M. Fatin Hasnat, Md. Habibur Rahman Aslam   +2 more
wiley   +1 more source

A multilayer drift‐diffusion broadcast model: Converting temporal evidence into response timing

Journal of the Experimental Analysis of Behavior, Volume 126, Issue 3, November 2026.
Abstract The peak interval procedure, in which subjects learn to cluster their anticipatory responses around delays to biologically critical outcomes, provides benchmarks for interval timing models. These include (a) the bistable response regime demarcated by an abrupt increase (start times) and a decrease (stop times) in response rates around the ...
Fuat Balcı
wiley   +1 more source

Sepsis: Epidemiology, Pathophysiology, and Management

MedComm, Volume 7, Issue 11, November 2026.
Sepsis remains a major global health burden characterized by substantial geographical heterogeneity and a considerable disease burden in China. Its pathophysiology reflects an interconnected network involving excessive inflammation, oxidative stress, immune imbalance and immunoparalysis, mitochondrial damage, endothelial injury, gut dysbiosis ...
Guang‐Tao Pan, Yu Deng, Lin‐Rui Ma, Yu‐Tong Li, Yu Qian, Yi‐Hua Ma, Hai‐Wei Rao, Yi‐Zhun Zhu, Pei‐Yu Yan   +8 more
wiley   +1 more source

Assessing effects of low‐dose CT attenuation correction on quantification and image quality on a LAFOV PET system with a modified NEMA‐IQ phantom

Medical Physics, Volume 53, Issue 11, November 2026.
Abstract Background Over the past decades, efforts have been directed toward increasing the sensitivity of PET systems to enable low‐dose PET imaging and shorter scan times. The Biograph Vision Quadra PET/CT scanner (Siemens Healthineers, Knoxville, TN, USA) combines an increased solid angle coverage with time of flight, enabling a significant ...
Vanessa Nadig, Jane Mackewn, Georgios Krokos, Lewis C. Davies, Daniel Darian, Sarah‐May Gould, Gary J. R. Cook, Alexander Hammers, Andrew J. Reader, Paul K. Marsden   +9 more
wiley   +1 more source