Results 151 to 160 of about 41,370 (259)

Advancing the Volumetric Analysis of Ultra‐Low‐Field Brain MRI Using Image‐to‐Image Translation

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 5, Page 2458-2473, November 2026.
ABSTRACT Purpose Ultra‐low‐field (ULF) MRI offers a promising path to accessible neuroimaging, with potential to address global healthcare disparities and advance population‐level brain health research. However, the inherently low signal‐to‐noise ratio (SNR), reduced spatial resolution, and altered tissue contrasts relative to conventional high‐field ...
Peter Hsu   +3 more
wiley   +1 more source

Deep Learning‐Based Dynamic Segmentation of the Left Atrium in 4D Flow MRI

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 5, Page 2505-2515, November 2026.
ABSTRACT Purpose To design a deep learning pipeline for automated, time‐resolved segmentation of the left atrium (LA) from 4D flow MRI data. Methods We studied 100 individuals including 65 patients with atrial fibrillation (AF) and 35 healthy subjects (HS) resulting in 2530 4D flow MRI time‐volumes acquired in different centers and scanners.
Jonas Leite   +16 more
wiley   +1 more source

Time to Move Upstream? A Framework for Expanding the Focus of Freezing of Gait to Prodromal, Subclinical, and Pre‐FOG Stages

open access: yesEuropean Journal of Neuroscience, Volume 64, Issue 9, November 2026.
Freezing of gait (FOG) is conceptualized as an upstream process evolving from vulnerability (Stages −3, prodromal), to subclinical (Stage −2) to downstream FOG expression (Stages −1, pre‐FOG and Stage 0, FOG episode). Earlier stages reflect underlying susceptibility, whereas later stages reflect the dynamic unfolding of freezing episodes.
Jeffrey M. Hausdorff   +12 more
wiley   +1 more source

SOME PROPERTIES OF J -HAUSDORFF, J -REGULAR AND J -NORMAL SPACES

open access: yes, 2018
In this paper we present new properties about the J - Hausdorff, J -regular and J -normal spaces, introduced recently by Suriyakala-Vembu. Additionally we introduce the J -Urysohn spaces, an intermediate concept between the Urysohn spaces and the J -
Pachon Rubiano, Néstor Raúl
core  

The Haagerup property is not invariant under quasi‐isometry

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 11, November 2026.
Abstract Using the work of Cornulier–Valette and Whyte (see Appendix A for the latter), we show that neither the Haagerup property nor weak amenability is invariant under quasi‐isometry of finitely generated groups. Appendix B shows, using the same examples, that the same holds for vanishing of the equivariant Lp$L^p$‐compression.
Mathieu Carette   +4 more
wiley   +1 more source

A Level Set Method on Particle Flow Maps

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 127, Issue 20, 30 October 2026.
ABSTRACT Accurate interface tracking is central to numerical simulations involving moving boundaries, including multiphase flows, free‐surface dynamics, phase‐change problems, and other interface‐driven processes in computational mechanics. Although, level set methods provide a flexible implicit representation of evolving interfaces, their grid‐based ...
Jinjin He   +5 more
wiley   +1 more source

Improving deep learning organ segmentation accuracy in cone-beam CT-guided radiotherapy using a robust scatter suppression method. [PDF]

open access: yesPhys Imaging Radiat Oncol
Dotel R   +9 more
europepmc   +1 more source

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