Results 61 to 70 of about 6,791 (211)

Spatial variation in liana effects on host‐tree allometry and biomass in an intact tropical forest

Ecography, EarlyView.
Lianas are increasing in abundance across the tropics, yet local spatial variation in their effects on host‐tree allometry and biomass, and the drivers of this variation within forests, remain poorly understood. Using field inventory, drone photogrammetry, and terrestrial laser scanning (TLS) across a 50‐ha plot on Barro Colorado Island, Panama, we ...
Sruthi M. Krishna Moorthy, Félicien Meunier, Stefan A. Schnitzer, Kim Calders, David M. DeFilippis, Antonio Aguilar, Nancy Pausenberger, Marco D. Visser, Helene C. Muller‐Landau, Hans Verbeeck   +9 more
wiley   +1 more source

XSIM: A structural similarity index measure optimized for MRI QSM [PDF]

Purpose: The structural similarity index measure (SSIM) has become a popular quality metric to evaluate QSM in a way that is closer to human perception than RMS error (RMSE).
Milovic, Carlos, Tejos, Cristian, Shmueli, Karin, Irarrazaval, Pablo, Silva, Javier   +4 more
core   +3 more sources

9.4‐Tesla magnetic resonance imaging in focal epilepsy patients with high‐resolution surface‐based profiling of focal cortical dysplasias

Epilepsia, EarlyView.
Abstract Objective The detection of subtle epileptogenic lesions such as focal cortical dysplasias (FCDs) is a clinical challenge in the management of drug‐resistant focal epilepsy (DRFE). Ultra‐high‐field (UHF) magnetic resonance imaging (MRI) offers increased signal‐to‐noise ratios and spatial resolution compared to 3‐T MRI and may improve diagnostic
Cornelius Kronlage, Pascal Martin, Benjamin Bender, Gisela E. Hagberg, Jonas Bause, Joana R. A. Loureiro, Mathilde Ripart, Sophie Adler, Konrad Wagstyl, Holger Lerche, Niels K. N. Focke, Esther Kuehn   +11 more
wiley   +1 more source

Effects of Motion in Ultrashort Echo Time Quantitative Susceptibility Mapping for Musculoskeletal Imaging

Journal of Imaging
Quantitative susceptibility mapping (QSM) is a powerful magnetic resonance imaging (MRI) technique for assessing tissue composition in the human body. For imaging short-T2 tissues in the musculoskeletal (MSK) system, ultrashort echo time (UTE) imaging ...
Sam Sedaghat, Jinil Park, Eddie Fu, Fang Liu, Youngkyoo Jung, Hyungseok Jang   +5 more
doaj   +1 more source

Interactions between lactobacillus and yeast: A recent update

Food Biomacromolecules, EarlyView.
Abstract Lactobacillus and yeast are microorganisms widely distributed in nature. Their interactions significantly impact fermentation processes, human health, and medical care. However, there is a lack of a systematic summary of the characteristics of these interactions, and the mechanisms underlying these interactions remain unclear.
Yang Chen, Mengyuan Liu, Mengchen Li, Zhiyun Yue, Yang Mu, Chao Wang, Lusha Xia, Junjun Gao, Mingye Peng, Ran Wang, Mengzhou Zhou   +10 more
wiley   +1 more source

In Vivo Quantitative Susceptibility Mapping (QSM) in Alzheimer's Disease

PLoS ONE, 2013
This study explores the magnetostatic properties of the Alzheimer's disease brain using a recently proposed, magnetic resonance imaging, postprocessed contrast mechanism. Quantitative susceptibility mapping (QSM) has the potential to monitor in vivo iron levels by reconstructing magnetic susceptibility sources from field perturbations.
Acosta-Cabronero, Julio, Williams, Guy B., Cardenas-Blanco, Arturo, Arnold, Robert J., Lupson, Victoria, Nestor, Peter J.   +5 more
openaire   +8 more sources

QSM reconstruction challenge 2.0: Design and report of results.

, 2021
PURPOSE: The aim of the second quantitative susceptibility mapping (QSM) reconstruction challenge (Oct 2019, Seoul, Korea) was to test the accuracy of QSM dipole inversion algorithms in simulated brain data.
Langkammer, C, QSM Challenge 2.0 Organization Committee, Milovic, C, Schweser, F, Bilgic, B, Marques, JP, Meineke, J   +6 more
core  

Instant tissue field and magnetic susceptibility mapping from MRI raw phase using Laplacian enhanced deep neural networks

NeuroImage, 2022
Quantitative susceptibility mapping (QSM) is an MRI post-processing technique that produces spatially resolved magnetic susceptibility maps from phase data.
Yang Gao, Zhuang Xiong, Amir Fazlollahi, Peter J Nestor, Viktor Vegh, Fatima Nasrallah, Craig Winter, G. Bruce Pike, Stuart Crozier, Feng Liu, Hongfu Sun   +10 more
doaj   +1 more source

Amyloid‐β–Related Cortical Susceptibility Alterations in Individuals Under Assessment for Alzheimer's Disease: A χ‐Separation Study

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Assessment of amyloid‐β (Aβ) burden and associated iron deposition and neurodegeneration is important for Alzheimer's disease (AD) management. Although quantitative susceptibility mapping (QSM) detects iron and myelin changes, conventional metrics suffer from signal cancelation between paramagnetic and diamagnetic components ...
Hiroyuki Tatekawa, Tatsushi Oura, Akitoshi Takeda, Ayako Omori, Natsuko Atsukawa, Shu Matsushita, Daisuke Horiuchi, Hirotaka Takita, Yasuhito Mitsuyama, Yoshihito Ban, Taro Shimono, Josef Pfeuffer, Daiju Ueda, Yoshiaki Itoh, Yukio Miki   +14 more
wiley   +1 more source

Quantitative Susceptibility Mapping-Based Microscopy of Magnetic Resonance Venography (QSM-mMRV) for In Vivo Morphologically and Functionally Assessing Cerebromicrovasculature in Rat Stroke Model.

PLoS ONE, 2016
Abnormal cerebral oxygenation and vessel structure is a crucial feature of stroke. An imaging method with structural and functional information is necessary for diagnosis of stroke.
Meng-Chi Hsieh, Ching-Yi Tsai, Min-Chiao Liao, Jenq-Lin Yang, Chia-Hao Su, Jyh-Horng Chen   +5 more
doaj   +1 more source