User profiles for Joel Ramirez
Joel RamirezSunnybrook Verified email at sri.utoronto.ca Cited by 5748 |
Perivascular spaces in the brain: anatomy, physiology and pathology
Perivascular spaces include a variety of passageways around arterioles, capillaries and
venules in the brain, along which a range of substances can move. Although perivascular …
venules in the brain, along which a range of substances can move. Although perivascular …
Vascular dysfunction—the disregarded partner of Alzheimer's disease
Increasing evidence recognizes Alzheimer's disease (AD) as a multifactorial and heterogeneous
disease with multiple contributors to its pathophysiology, including vascular dysfunction…
disease with multiple contributors to its pathophysiology, including vascular dysfunction…
Retrieval of autobiographical memory in Alzheimer's disease: relation to volumes of medial temporal lobe and other structures
The representation of autobiographical memory is distributed over a network of brain
structures, with the medial temporal lobe (MTL) at its epicenter. Some believe that, over time, all …
structures, with the medial temporal lobe (MTL) at its epicenter. Some believe that, over time, all …
Hippocampal segmentation for brains with extensive atrophy using three‐dimensional convolutional neural networks
Hippocampal volumetry is a critical biomarker of aging and dementia, and it is widely used
as a predictor of cognitive performance; however, automated hippocampal segmentation …
as a predictor of cognitive performance; however, automated hippocampal segmentation …
Visible Virchow-Robin spaces on magnetic resonance imaging of Alzheimer's disease patients and normal elderly from the Sunnybrook Dementia Study
Background: Visible Virchow-Robin spaces (VRS) are commonly used markers for small
vessel disease in aging and dementia. Objective: However, as previous reports were based on …
vessel disease in aging and dementia. Objective: However, as previous reports were based on …
Imaging the perivascular space as a potential biomarker of neurovascular and neurodegenerative diseases
Although the brain lacks conventional lymphatic vessels found in peripheral tissue, evidence
suggests that the space surrounding the vasculature serves a similar role in the clearance …
suggests that the space surrounding the vasculature serves a similar role in the clearance …
Lesion Explorer: a comprehensive segmentation and parcellation package to obtain regional volumetrics for subcortical hyperintensities and intracranial tissue
Subcortical hyperintensities (SH) are a commonly observed phenomenon on MRI of the
aging brain (Kertesz et al., 1988). Conflicting behavioral, cognitive and pathological …
aging brain (Kertesz et al., 1988). Conflicting behavioral, cognitive and pathological …
[HTML][HTML] Perivascular spaces segmentation in brain MRI using optimal 3D filtering
…, R Lovreglio, MC Valdés Hernández, J Ramirez… - Scientific reports, 2018 - nature.com
Perivascular Spaces (PVS) are a feature of Small Vessel Disease (SVD), and are an important
part of the brain’s circulation and glymphatic drainage system. Quantitative analysis of …
part of the brain’s circulation and glymphatic drainage system. Quantitative analysis of …
Associations between amyloid β and white matter hyperintensities: a systematic review
Introduction This systematic review synthesizes current evidence for associations between
cortical amyloid β, visualized on amyloid positron emission tomography imaging, and white …
cortical amyloid β, visualized on amyloid positron emission tomography imaging, and white …
The Canadian dementia imaging protocol: harmonizing national cohorts
Background Harmonized protocols to collect imaging data must be devised, employed, and
maintained in multicentric studies to reduce interscanner variability in subsequent analyses. …
maintained in multicentric studies to reduce interscanner variability in subsequent analyses. …