Results 61 to 70 of about 486,707 (364)

Arterial Spin‐Labeling MRI at the Cortical‐CSF Interface: A Novel Biomarker in Alzheimer Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background/Objective Arterial spin‐labeling (ASL) MRI can measure perfusion signal adjacent to CSF spaces and may provide information regarding CSF‐adjacent water transport physiology. We developed an automated pipeline to extract cortical‐CSF interface (IF) perfusion for comparison between Alzheimer disease (AD) and cognitively normal ...
Mona Asghariahmadabad   +22 more
wiley   +1 more source

Signatures of echolocation and dietary ecology in the adaptive evolution of skull shape in bats

open access: yesNature Communications, 2019
Morphological diversity may arise rapidly as a result of adaptation to novel ecological opportunities, but early bursts of trait evolution are rarely observed.
J. Arbour, A. Curtis, S. Santana
semanticscholar   +1 more source

Birds have peramorphic skulls, too: anatomical network analyses reveal oppositional heterochronies in avian skull evolution

open access: yesCommunications Biology, 2020
In contrast to the vast majority of reptiles, the skulls of adult crown birds are characterized by a high degree of integration due to bone fusion, e.g., an ontogenetic event generating a net reduction in the number of bones.
Olivia Plateau, C. Foth
semanticscholar   +1 more source

Benefits of skull base surgery using neuronavigation system [PDF]

open access: yes, 2008
Objective : Skull base tumors frequently encase or extend into vital neurovascular structures. Preoperative planning and intraoperative identification of anatomic landmarks is important in complex tumors since it helps avoid or minimize surgical ...
안정용   +3 more
core  

Analysis of Associated Spinal Fractures in Cases of Traumatic Intracranial Hemorrhage or Skull Fracture [PDF]

open access: yes, 2016
Introduction: Patients with traumatic intracranial hemorrhage (ICH) or skull fracture are typically admitted to the Department of Neurosurgery for fear of delayed neurological deterioration.
Yoshino K, Suzuki K, Yunoki M, Uneda A
core   +1 more source

Frailty Predicts Incident Osteoporotic Fractures in Veterans with Rheumatoid Arthritis

open access: yesArthritis Care &Research, EarlyView.
Objective Rheumatoid arthritis (RA) is associated with an increased risk of frailty and osteoporosis, but the relationship between frailty and incident osteoporotic fractures in RA is underexplored. Methods Data were from the Veterans Affairs (VA) Rheumatoid Arthritis Registry. Frailty was measured using the VA Frailty Index (VAFI).
Katherine D. Wysham   +14 more
wiley   +1 more source

Prediction of vestibular schwannoma recurrence using artificial neural network

open access: yesLaryngoscope Investigative Otolaryngology, 2020
Objectives To compare two statistical models, namely logistic regression and artificial neural network (ANN), in prediction of vestibular schwannoma (VS) recurrence. Methods Seven hundred eighty‐nine patients with VS diagnosis completed an online survey.
Mehdi Abouzari   +7 more
doaj   +1 more source

Holograms to Focus Arbitrary Ultrasonic Fields through the Skull

open access: yesPhysical Review Applied, 2019
We report 3D-printed acoustic holographic lenses for the formation of ultrasonic fields of complex spatial distribution inside the skull. Using holographic lenses, we experimentally, numerically and theoretically produce acoustic beams whose spatial ...
Sergio Jiménez-Gambín   +3 more
semanticscholar   +1 more source

AN ACHONDROPLASIC SKULL [PDF]

open access: yesThe Lancet, 1919
n ...
openaire   +1 more source

Skull Base Cholesterol Granuloma: A Distinct Entity?

open access: yes, 2015
Objective: Cholesterol granulomas (CG) are the most common benign lesions of the petrous apex (PA) and have very distinct computed tomography (CT) and magnetic resonance imaging (MRI) characteristics.
Telischi, Fred F   +7 more
core   +1 more source

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