Results 71 to 80 of about 19,190 (232)

Anatomia endoscópica do acesso à região selar e plano esfenoidal [PDF]

open access: yes, 2011
The productive work between otolaryngologists and neurosurgeons has resulted in the emergence of endoscopic endonasal skull base surgery. The goal of the present study is to describe the endoscopic anatomy of the endonasal approach to the sellar region ...
FORTES, Felipe Sartor Guimarães   +5 more
core   +2 more sources

Plasma biomarker progression across the Alzheimer's disease amyloid beta and tau positron emission tomography trajectories

open access: yesAlzheimer's &Dementia, Volume 22, Issue 2, February 2026.
Abstract INTRODUCTION With increased uptake in disease‐modifying treatments for amyloid beta (Aβ) removal, it is important to measure performance of highly sensitive plasma biomarkers to detect the presence of Aβ and tau in cognitively impaired populations.
Rodrigo Cánovas   +21 more
wiley   +1 more source

Cerebrovascular regulation dynamics and Alzheimer's neuroimaging phenotypes

open access: yesAlzheimer's &Dementia, Volume 22, Issue 2, February 2026.
Abstract INTRODUCTION Cerebrovascular dysfunction may contribute to Alzheimer's disease (AD) pathogenesis. We examined how novel cerebral hemodynamic markers relate to neuroimaging phenotypes associated with AD dementia in cognitively impaired and unimpaired older adults.
Amaryllis A. Tsiknia   +12 more
wiley   +1 more source

Microsurgical management of posterior circulation aneurysms

open access: yesChinese Journal of Contemporary Neurology and Neurosurgery, 2012
Objective To retrospectively analyze effective methods for surgical management of posterior circulation aneurysms. Methods There were 42 patients with posterior circulation aneurysms [26 cases of basilar aneurysm (27 aneurysms), 16 cases of vertebral ...
Xiang⁃en SHI   +8 more
doaj  

Application of flow coils to occlude distal vertebrobasilar aneurysms

open access: yesЕндоваскулярна нейрорентгенохірургія, 2020
Objective ‒ to improve the quality of treatment and endovascular occlusion techniques in case of distal vertebrobasilar (VB) aneurysms with implementation of flow coils usage. Materials and methods. Retrospective analysis of 4 patients (3 women and 1 man,
D.V. Shchehlov   +5 more
doaj   +1 more source

Noradrenergic and cholinergic innervation of the normal human heart and changes associated with cardiomyopathy

open access: yesThe Anatomical Record, Volume 309, Issue 2, Page 417-450, February 2026.
Abstract Autonomic nerves are crucial in cardiac function and pathology. However, data on the distribution of cholinergic and noradrenergic nerves in normal and pathologic human hearts is lacking. Nonfailing donor hearts were pressure‐perfusion fixed, imaged, and dissected. Left ventricular cardiomyopathy samples were also obtained.
Peter Hanna   +16 more
wiley   +1 more source

Pharmacological MRI: Utility in Understanding Drug Mechanisms in Psychiatric Disorders

open access: yesJournal of Magnetic Resonance Imaging, Volume 63, Issue 2, Page 346-363, February 2026.
ABSTRACT Pharmacological MRI (pharmaMRI) has emerged as a powerful tool to study how psychoactive drugs affect brain function and to uncover mechanisms of drug action in psychiatric disorders. This review provides an overview of key techniques used in pharmaMRI, including BOLD‐fMRI, arterial spin labeling (ASL), and cerebral blood volume (CBV) mapping,
Christin Y. Sander   +4 more
wiley   +1 more source

Ischemic Stroke in Hypereosinophilic Syndrome: A Clinicopathologic Study of Two Cases

open access: yesNeuropathology, Volume 46, Issue 1, February 2026.
ABSTRACT Ischemic stroke is a rare complication of hypereosinophilic syndrome (HES). Manifestations of stroke in HES have been described in the radiologic literature; however the pathologic characterization of central nervous system (CNS) involvement in HES is limited.
Karina C. Martin   +3 more
wiley   +1 more source

Origin of the Posterior Inferior Cerebellar Artery over the C1 Posterior Arch [PDF]

open access: yesRevista Brasileira de Ortopedia
Resumo The posterior inferior cerebellar artery usually arises from the intracranial segment (V4) of the vertebral artery. Despite its mean diameter of 2 mm, it usually irrigates important areas of the brain.
Zeferino Demartini Júnior   +5 more
doaj   +3 more sources

What does Doppler Ultrasonography Brings to the Diagnosis of Traumatic Vertebral Artery Dissection [PDF]

open access: yes, 2016
Here we describe the case of a young woman with a late diagnosis of vertebral artery dissection and midbrain ischemic lesion after minor post traumatic injury.
Caruso, P, Manganotti, P, Moretti, R
core   +1 more source

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