A5045288447- Acute Ischemic Stroke Management
- Cerebrovascular and Carotid Artery Diseases
- Advanced MRI Techniques and Applications
- Infectious Aortic and Vascular Conditions
- Venous Thromboembolism Diagnosis and Management
- Vascular Malformations and Hemangiomas
- Aortic aneurysm repair treatments
- Bone and Joint Diseases
- Bladder and Urothelial Cancer Treatments
- Lipoproteins and Cardiovascular Health
- Vascular Procedures and Complications
- Transplantation: Methods and Outcomes
- Aortic Disease and Treatment Approaches
- Cardiovascular and Diving-Related Complications
- Cardiac Imaging and Diagnostics
- Diagnosis and Treatment of Venous Diseases
- Infective Endocarditis Diagnosis and Management
- Colorectal Cancer Screening and Detection
- Vascular Anomalies and Treatments
- MRI in cancer diagnosis
- Traumatic Brain Injury and Neurovascular Disturbances
- Tracheal and airway disorders
- Protease and Inhibitor Mechanisms
- Cardiovascular Conditions and Treatments
- Radiomics and Machine Learning in Medical Imaging
University Health Network
2020-2024
University of Toronto
2018-2021
Cognitive Neuroimaging Lab
2015
Alberta Bible College
2015
University of Calgary
2012-2015
Calgary Laboratory Services
2014
University of Alberta
2013
University of British Columbia
2013
We have theorized that clots with stasis are longer. therefore explored the relationship between thrombus imaging characteristics on noncontrast computed tomography (NCCT) and magnetic resonance (MRI) clot length pial collaterals baseline angiography (CTA).Prospective study of acute ischemic stroke patients (2005-2009) from Keimyung University. Patients known symptom onset time, CTA, MRI, M1-Middle Cerebral Artery (MCA)±intracranial internal carotid artery (ICA) occlusions were included....
Transient or minor ischemic stroke is associated with an early risk of deterioration. Baseline perfusion-diffusion mismatch may predict clinical deterioration and infarct growth in this population.High-risk transient attack (National Institutes Health Stroke Scale ≤3) subjects were prospectively enrolled imaged MRI within 24 hours symptom onset as part sequential derivation validation cohorts. diffusion-weighted imaging, perfusion-weighted imaging (Tmax≥4 s), s-diffusion-weighted imaging),...
More than half of patients with TIA/minor stroke have ischemic lesions on early DWI, which represent irreversibly damaged tissue. The presence and volume DWI predict deterioration in this population. We aimed to study the rate implications reversal stroke.Patients were prospectively enrolled imaged within 24 hours onset. Patients followed for 3 months repeat MR imaging either at day 30 or 90. Baseline DWI/PWI follow-up FLAIR final infarct volumes measured.Of 418 included, 55.5% had 37% PWI...
Proximal type 1A endoleaks on completion intra-operative angiography are not infrequently seen following endovascular abdominal aneurysm repair (EVAR). The natural course of these leaks is well established. We sought to determine the rate spontaneous resolution and a conservative treatment approach endoleaks.All cases involving repairs infra-renal aortic aneurysms resulting in proximal endoleak final were retrospectively reviewed from 1 April 2010 30 March 2015. Demographic, pre...
<h3>BACKGROUND AND PURPOSE:</h3> Acute statin therapy improves neurologic outcome and diminishes infarct growth in animal models of stroke. Clinical studies suggest that premorbid early use is associated with improved after major We studied the association between radiographic clinical outcomes patients high-risk TIA minor <h3>MATERIALS METHODS:</h3> Patients stroke (NIHSS ≤3) were prospectively enrolled within 24 hours symptom onset. followed clinically for 3 months, a subset had repeat MR...
Neoadjuvant chemotherapy (NAC) for muscle-invasive bladder cancer (MIBC) improves overall survival, but pathological response rates are low. Predictive biomarkers could select those patients most likely to benefit from NAC. Radiomics technology offers a novel, non-invasive method identify predictive biomarkers. Our study aimed develop radiomics signature NAC in MIBC.An institutional database was used MIBC who were treated with followed by radical cystectomy. Patients classified into...
Background: Patients presenting with transient or minor ischemic symptoms (TIA/MIS) are at risk for early deterioration. Identification of those highest progression may justify more aggressive acute reperfusion treatments. We tested the hypothesis that baseline perfusion (PWI)- diffusion (DWI) mismatch predicts clinical deterioration and infarct growth on follow-up imaging in this population. Methods: TIA/MIS (NIH Stroke Scale ≤ 3) were prospectively enrolled imaged within 24 hours symptom...
Bronchial artery aneurysm (BAA) is a rare vascular abnormality that may result in life-threatening bleeding if it left untreated. We present the case of 35-year-old man with mediastinal BAA characterized by short inflow segment and tortuous single outflow vessel. The patient's was treated novel approach involving placement patent ductus arteriosus closure device as well coil embolization vessel, successfully excluding BAA. Two-week follow-up revealed no flow embolized on computed tomography...
BACKGROUND: Despite their mild presenting neurological deficit, over one third of patients with transient ischemic attack (TIA) and minor stroke are dead or disabled at the time hospital discharge. This is predominantly related to either symptom progression recurrent stroke, although predicting outcome can be difficult. We sought determine whether baseline radiographic MR characteristics could predict disability 3months in this population. METHODS: Consecutive TIA/minor (National Institutes...
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Purpose: We aimed to determine if attenuation characteristics on NCCT can be used in place of DWI FLAIR“mismatch”as an imaging paradigmto detect patients within a recommended time window for thrombolysis. Methods: Data is from consecutive acute stroke (2005-2009) Keimyung University, South Korea analyzed at the University Calgary. Only with visible anterior circulation occlusions baseline CT-angio, known symptom onset and MRI 60 minutes CT were included. All received revascularization...
Introduction: We tried to explore the role of lepto meningeal collaterals, baseline imaging recanalization time in predicting infarct growth and final clinical outcome acute ischemic strokes. Methods: Data is from a prospective study consecutive stroke patients (2005-2009) Keimyung University, Daegu,South Korea analysed at University Calgary. Only with M1 MCA+/- intracranial ICA on CT-angio, known onset MR DWI follow-up were included for analyses. Baseline volume was calculated using...
Introduction: One-third of patients with TIA and minor ischemic stroke (MIS) have evidence penumbra, defined as hypoperfused regions that not been irreversibly damaged. Diffusion weighted Imaging (DWI) lesions are thought to represent damaged tissue. DWI reversal therefore has implications in accurate estimation penumbra. We aimed determine the rate this population. Methods: Patients TIA/MIS (NIH Stroke Scale ≤ 3) were prospectively enrolled imaged within 24 hours symptom onset part two...