Results 61 to 70 of about 2,012,511 (304)

Sex‐Stratified Association of Regional Dopamine Transporter Binding With Disease Progression in Amyotrophic Lateral Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To clarify the clinical relevance of dopamine transporter single‐photon emission computed tomography (DAT‐SPECT) abnormalities in amyotrophic lateral sclerosis (ALS), with a prespecified focus on sex‐stratified associations with disease progression and short‐term prognosis.
Tomoya Kawazoe   +7 more
wiley   +1 more source

A Study on the Efficiency in the Energy Harvesting Device Using Resonance of Pendulum

open access: yesApplied Sciences, 2022
Recently, increased public interest in pollution caused by fossil fuels has prompted studies on various renewable energy sources. As it is important to ensure power generation efficiency in energy harvesting, research in this area continues.
Hyunsu Kim, Sangwoo Lee
doaj   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright   +10 more
wiley   +1 more source

A new angle on resonances in confined atoms and ions

open access: yesPhysica Scripta, 2021
Abstract A new type of resonance in a confined atomic system is suggested. It would migrate strongly in energy as a function of the degree of confinement, moving up or down in the Rydberg manifold according to the properties of the confining shell.
openaire   +1 more source

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi   +8 more
wiley   +1 more source

Assessment of the Relationship Between the Femorotibial Angle and Meniscal Injury with Radiologic Imaging Methods

open access: yesHaseki Tıp Bülteni, 2019
Aim:Our aim in this study was to determine the relationship between femorotibial angle and meniscal injuries and to evaluate the relationship between femorotibial angle and development of osteoarthritis.Methods:One hundred and one patients aged >18 years
Emrah Sayıt, Aslı Tanrıvermiş Sayıt
doaj   +1 more source

Nonlinear Scattering of 90° Pitch Angle Electrons in the Outer Radiation Belt by Large‐Amplitude EMIC Waves

open access: yesGeophysical Research Letters, 2020
Electromagnetic ion cyclotron (EMIC) waves can cause relativistic electron scattering and atmospheric precipitation, primarily via cyclotron resonant interactions in the Earth's radiation belts.
Dae‐Young Lee   +2 more
doaj   +1 more source

The brainstem-tentorium angle revisited. Difficulties encountered and possible solutions

open access: yesClinical and Experimental Obstetrics & Gynecology, 2021
Background: Fetal posterior fossa fluid collections (PFFC) can range from normal variants to severe anomalies with highly variable neurological prognosis.
Laura Joigneau   +5 more
doaj   +1 more source

White Matter and Perivascular Imaging Changes in Alzheimer's Disease and Cerebral Amyloid Angiopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Peak‐width of skeletonized mean diffusivity (PSMD) and diffusion tensor imaging–analysis along the perivascular space (DTI‐ALPS), reflecting white matter integrity and glymphatic function, are altered in Alzheimer's disease (AD).
Debina Laishram   +3 more
wiley   +1 more source

Association between increased signal intensity at the proximal patellar tendon and patellofemoral geometry in community-based asymptomatic middle-aged adults: a cross-sectional study

open access: yesBMC Musculoskeletal Disorders, 2020
Background Histological and epidemiological data suggest that increased signal intensity at the proximal patellar tendon on magnetic resonance imaging is a response to tendon loading.
Robert D. Little   +8 more
doaj   +1 more source

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