Results 51 to 60 of about 306,957 (330)

The Associations Between Chronic Active Lesions and White Matter Disease: A 7 Tesla Imaging Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background The relationship between paramagnetic rim lesions (PRLs) and surrounding normally appearing white matter (NAWM) disease, potentially contributory to the associations seen between PRLs and clinical impairment, is underexplored. Objectives To assess whether PRLs correlate with a greater degree of NAWM injury in early MS.
Ellie McCluey, Ahmad A. Toubasi, Jiacheng Wang, Habeeb F. Kazimuddin, Taegan Vinarsky, Caroline Gheen, Carynn Koch, Zachery Rohm, Bryan Hernandez, Margareta A. Clarke, Rachael Cheek, Rozita Khalili, Chaoyang Jin, Victoria Lim, John Kramer, Junzhong Xu, Ipek Oguz, Francesca Bagnato   +17 more
wiley   +1 more source

Ultrasonic attenuation of an agar, silicon dioxide, and evaporated milk gel phantom

Journal of Medical Ultrasound, 2021
Background: It has been demonstrated that agar-based gel phantoms can emulate the acoustic parameters of real tissues and are the most commonly used tissue-mimicking materials for high-intensity focused ultrasound applications.
Theocharis Drakos, Anastasia Antoniou, Nikolas Evripidou, Tereza Alecou, Marinos Giannakou, Georgios Menikou, Georgios Constantinides, Christakis Damianou   +7 more
doaj   +1 more source

Central Dysmyelination in SSADH‐Deficient Humans and Mice

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Succinic semialdehyde dehydrogenase deficiency (SSADHD) is an inherited metabolic disorder characterized by an accumulation of γ‐aminobutyric (GABA). In addition to its synaptic role as an inhibitory neurotransmitter, GABA also plays an important role in myelination.
Itay Tokatly Latzer, Henry H. C. Lee, Edward Yang, Cesar Alves, Mariarita Bertoldi, Caitlyn Fung, Spencer V. Steele, Eren Kule, Zijie Jin, Alexander Rotenberg, Jean‐Baptiste Roullet, Phillip L. Pearl   +11 more
wiley   +1 more source

The rs10191329 Risk Allele Is Associated With Pronounced Retinal Layer Atrophy in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate whether the rs10191329 risk allele in the DYSF–ZNF638 locus, which is implicated in central nervous system resilience rather than immune‐mediated pathology, is associated with retinal layer thinning, a biomarker of neuroaxonal damage in relapsing multiple sclerosis (RMS). Methods From a prospective observational study,
Gabriel Bsteh, Ruchi Tanavade, Nik Krajnc, Fabian Föttinger, Theresa König, Martin Krenn, Lukas Haider, Barbara Kornek, Fritz Leutmezer, Kerstin U. Ludwig, Stefan Macher, Tobias Monschein, Markus Ponleitner, Paulus Rommer, Christiane Schmied, Karin Zebenholzer, Tobias Zrzavy, Gudrun Zulehner, Franziska Di Pauli, Axel Schmidt, Harald Hegen, Berthold Pemp, Thomas Berger   +22 more
wiley   +1 more source

Use of Quantitative Ultrasound to Measure Acoustic Properties of Human Skin

Archives of Acoustics, 2014
The scattering of ultrasonic waves depends on the size, shape, acoustical properties and concentration of scatterers in the tissue. The spectrum of the ultrasonic backscatter can be used to characterize non-invasively the structural and ...
Hanna PIOTRZKOWSKA, Jerzy LITNIEWSKI, Marcin LEWANDOWSKI, Elżbieta SZYMAŃSKA, Andrzej NOWICKI   +4 more
doaj  

Effect of structural defects on anomalous ultrasound propagation in solids during second-order phase transitions

, 2008
The effect of structural defects on the critical ultrasound attenuation and ultrasound velocity dispersion in Ising-like three-dimensional systems is studied.
A. B. Harris, A. I. Larkin, A. Ikushima, A. Pawlak, A. Pawlak, D. R. Nelson, E. A. Nosikhin, H. Iro, I. K. Kamilov, K. B. Varnashev, Kh. K. Aliev, L. D. Landau, M. Suzuki, N. Rosov, P. V. Prudnikov, P. V. Prudnikov, R. A. Ferrel, R. Folk, R. Fol’k, T. J. Moran, V. V. Prudnikov, V. V. Prudnikov, V. V. Prudnikov, V. V. Prudnikov, Y. Imry, Yu. A. Izyumov   +25 more
core   +1 more source

Chronic Pain in Parkinson’s Disease: Prevalence, Sex Differences, Regional Anatomy and Comorbidities

Annals of Clinical and Translational Neurology, EarlyView.
Chronic pain affected 66.2% of 10,631 individuals with Parkinson's disease, with higher prevalence and severity in females. Pain most often involved the buttocks, lower back, neck, and knees, and was linked to depression, sleep disorders, and osteoarthritis.
Natalia S. Ogonowski, Freddy Chafota, Fangyuan Cao, Amanda Wei Yin Lim, Victor Flores‐Ocampo, Santiago Díaz‐Torres, Zuriel Ceja, Luis M. García‐Marín, Scott F. Farrell, Kishore R. Kumar, Jane Alty, George D. Mellick, Trung Thành Ngô, Miguel E. Rentería   +13 more
wiley   +1 more source

Attenuation coefficient for surface acoustic waves in fluid region

Vietnam Journal of Mechanics, 2012
In recent years, surface acoustic wave devices used in bio-sensing applications have demonstrated high sensitivity in the detection of fluid properties such as density, viscosity, stream velocity.
Bui Thu Hang, Bui Duc Tung, Nguyen Tien Dat, Chu Duc Trinh   +3 more
doaj   +1 more source

Calculation and Research of γ-ray Air Attenuation Coefficient at Different Altitudes

Journal of Isotopes, 2021
In the process of aviation gamma dose rate measurement, due to the large altitude span, the gamma-ray air attenuation coefficient will be affected by altitude, temperature, air pressure and air density, so corresponding corrections are needed.
WEI Kaidi;XU Yang;GAO Fei;LIU Chuanfeng;HANG Zhongbin;WANG Zilin
doaj   +1 more source

Dynamical Kohn Anomaly in Surface Acoustic Wave Response in Quantum Hall Systems Near $\nu = 1/2$

, 2005
The dynamical analog of the Kohn Anomaly image of the Fermi Surface is demonstrated for the response functions to the surface acoustic waves in Quantum Hall Systems near $\nu = 1/2$.
A. Afanas’ev, A. Stern, A. Wixforth, B.I. Halperin, E.J. Woll, J.H. Smet, J.M. Ziman, Joseph L. Birman, Nataliya A. Zimbovskaya, P. Kopietz, R.L. Willett, R.L. Willett, R.L. Willett, R.L. Willett, R.L. Willett, S.H. Simon, S.H. Simon, W. Kohn   +17 more
core   +1 more source