A5070002909- Cerebrovascular and Carotid Artery Diseases
- Intracranial Aneurysms: Treatment and Complications
- Acute Ischemic Stroke Management
- Vascular Malformations Diagnosis and Treatment
- Traumatic Brain Injury and Neurovascular Disturbances
- Moyamoya disease diagnosis and treatment
- Venous Thromboembolism Diagnosis and Management
- Meningioma and schwannoma management
- Airway Management and Intubation Techniques
- Tracheal and airway disorders
- Advanced MRI Techniques and Applications
- Intracerebral and Subarachnoid Hemorrhage Research
- Anesthesia and Pain Management
- Radiation Dose and Imaging
- MRI in cancer diagnosis
- Cerebral Venous Sinus Thrombosis
- Cardiovascular Health and Disease Prevention
- Nausea and vomiting management
- Anesthesia and Sedative Agents
- Foreign Body Medical Cases
- Peripheral Artery Disease Management
- Central Venous Catheters and Hemodialysis
- Atrial Fibrillation Management and Outcomes
- Antiplatelet Therapy and Cardiovascular Diseases
- Advanced Neuroimaging Techniques and Applications
University of Ulsan
2016-2025
Asan Medical Center
2016-2025
Ulsan College
2016-2025
Hanyang University Medical Center
2025
Inje University Haeundae Paik Hospital
2025
Sungkyunkwan University
2021-2023
Incheon Medical Center
2023
Chungbuk Provincial College
2022
Weatherford College
2022
Yeungnam University
2004-2017
To investigate the safety and clinical effectiveness of covered retrievable expandable nitinol stents in 25 patients with a benign esophageal stricture.Under fluoroscopic guidance, were placed stricture removed retrieval hook 1-8 weeks later.Stent placement was successful all patients, no procedural complications. After stent placement, could ingest solid food. The successfully from but two patients. One patient passed via rectum, other regurgitated high cervical stent. removal, one...
Growing evidence of the relationship between poor antiplatelet response and occurrence clinical events elicited need monitoring which has not been part our daily practice. We present initial experience with a new point-of-care antiplatelet-function test (VerifyNow assay) in neurointerventional procedures.Among 106 consecutive patients from July 2006 to April 2007, ninety-eight met inclusion criteria. Our preferred regimen was aspirin (325 mg daily) clopidogrel (300 loading dose followed by...
<i>Background:</i> Standard selection criteria for thrombolysis typically exclude patients with acute ischemic stroke unclear onset. Multimodal MRI screening may be able to identify those a favorable benefit-risk ratio thrombolysis. We aimed evaluate the safety and efficacy of MRI-based in unclear-onset (UnCLOS). <i>Methods:</i> reviewed database registries from 3 medical centers Korea. Subjects received intravenous tissue plasminogen activator (tPA) or combined tPA...
Purpose To better understand the performance of four commercially available neurovascular stents in intracranial aneurysm embolization, were compared terms their basic morphological and mechanical properties. Materials Methods Four different types that are currently being used for cerebral embolization prepared (two per type). Two laser-cut (Neuroform Enterprise) two braided from a single nitinol wire (LEO LVIS stents). All subjected to quantitative measurements stent size, pore density,...
Single subcortical infarction (SSI) may be classified as proximal SSI (pSSI) or distal (dSSI) according to its extension the middle cerebral artery (MCA). We investigated differences between pSSI and dSSI in terms of their clinical features, lesion size, frequency MCA plaques detected by high-resolution MRI.Thirty-nine patients with (20 19 dSSI) were prospectively enrolled who did not show relevant disease on MR angiography. Lesion neurological status (initial National Institutes Health...
<b><i>Background:</i></b> Although high-resolution magnetic resonance imaging (HR-MRI) has been used as a strong method for diagnosing intracranial vertebral artery dissection (IVAD), the diagnosis is sometimes challenging because geometric changes in natural course. The radiologic features may change or disappear over time, which makes confusing. Our study was to present radiological findings according stages spontaneous and unruptured, IVAD on 3T HR-MRI guide age...
Atrial fibrillation detected after stroke (AFDAS) refers to the identification of newly diagnosed atrial (AF) following an ischemic in patients without known AF (KAF). The objective this study was compare functional outcomes with AFDAS and those KAF who underwent mechanical thrombectomy.
OBJECT The incidence and risk factors of microembolic lesions on MR diffusion-weighted imaging (DWI) were analyzed after the endovascular coiling unruptured intracranial aneurysms (UIAs). METHODS Data obtained from 271 consecutive patients (70 men 201 women; median age 57 years; range 23–79 years) who presented with UIA for coil embolization between July 2011 June 2013 analyzed. Two independent reviewers examined DWI apparent diffusion coefficient maps following day presence restrictive...
The preoperative coexisting chronic systemic illness, delay in surgery, gender, and age were considered as risk factors for the complications after hip fracture surgery. wider range of surgical immobility-related pulmonary morbidity may affect postoperative mortality. This study examined mortality following surgery.The patient data was collected retrospectively. consecutive 506 patients with aged 60 years or older, included. patients' age, preexisting diseases, American Society...
Silent brain infarcts (SBIs), which manifest as dot-like lesions on diffusion-weighted imaging (DWI) after endovascular procedures, are associated with an increased risk of stroke, dementia, and cognitive decline. We aimed to identify the factors SBIs following middle cerebral artery (MCA) stenting or balloon angioplasty. retrospectively reviewed patients who underwent MCA angioplasty, including those symptomatic, atherosclerotic stenosis ≥50%. DWI scans were conducted before procedure,...
<h3>ABSTRACT</h3> <h3>BACKGROUND AND PURPOSE:</h3> The guided angiography system, an integrated enables continuous guidance and flushing during diagnostic procedures. A guidewire provides by remaining inside the catheter contrast injection into tortuous vessels. While its feasibility was demonstrated in a retrospective study, this randomized controlled trial aims to evaluate safety effectiveness. <h3>MATERIALS METHODS:</h3> This single-center, single-blind, conducted from September 2021 June...
Abstract Traditional intracranial pressure (ICP) monitoring methods, using intraventricular catheters, face significant limitations, including high invasiveness, discrete data, calibration complexities, and drift issues, which hinder long‐term stable monitoring. Here, a non‐surgical, in‐stent membrane bioelectronic system is presented for continuous reliable ICP This platform integrates capacitive thin‐film sensor with stent, enabling precise real‐time detection of fluctuations directly...
Hyperdense lesions can frequently be observed on the CT obtained immediately after intra-arterial (IA) thrombolysis, and it is sometimes difficult to differentiate contrast extravasation from hemorrhagic lesions. The purposes of this study are classify hyperdense according their morphologic features track outcome those lesions.Among 94 patients who suffered with anterior circulation ischemic stroke were treated IA 31 revealed procedure. categorized into four types volume, shape, location...
Cerebral arterial dissections are recognized as a common cause of stroke. However, few studies have reported on the distribution cerebral dissection and angiographic pattern related to presenting clinical symptom pattern. We analyzed artery along with depicted angiograms.From January 2000 2007, 133 patients admitted our institutes were retrospectively reviewed. The characteristic findings all arteries carefully evaluated 4-vessel angiograms. male-female ratio was 77: 56 mean age 51 years....
The purpose of this study was to assess the safety and early outcomes Pipeline device for large/giant or fusiform aneurysms.The implanted in a total 45 patients (mean age, 58 years; M:F=10:35) with 47 aneurysms. We retrospectively evaluated characteristics treated aneurysms, periprocedural events, morbidity mortality, after implantation.The aneurysms were located internal carotid artery (ICA) cavernous segment (n=25), ICA intradural (n=11), vertebrobasilar trunk (n=8), middle cerebral (n=3)....