A5055137353- Intracranial Aneurysms: Treatment and Complications
- Cerebrovascular and Carotid Artery Diseases
- Advanced MRI Techniques and Applications
- Traumatic Brain Injury and Neurovascular Disturbances
- Acute Ischemic Stroke Management
- Vascular Malformations Diagnosis and Treatment
- Medical Imaging Techniques and Applications
- Advanced X-ray and CT Imaging
- MRI in cancer diagnosis
- Radiation Dose and Imaging
- Renal and Vascular Pathologies
- Cardiac Imaging and Diagnostics
- Cardiovascular Health and Disease Prevention
- Neurosurgical Procedures and Complications
- Photoacoustic and Ultrasonic Imaging
- Moyamoya disease diagnosis and treatment
- Spinal Fractures and Fixation Techniques
- Atomic and Subatomic Physics Research
- Cerebrospinal fluid and hydrocephalus
- Meningioma and schwannoma management
- Peripheral Artery Disease Management
- Aortic Disease and Treatment Approaches
- Cardiac and Coronary Surgery Techniques
- History of Medical Practice
- Aortic aneurysm repair treatments
University of Wisconsin–Madison
2015-2024
UW Health University Hospital
1978-2018
Friedrich-Alexander-Universität Erlangen-Nürnberg
2010-2015
Siemens (Germany)
2009-2015
Second Military Medical University
2015
Changhai Hospital
2015
Siemens Healthcare (United States)
2015
Methodist Hospital
2004-2012
Siemens Healthcare (Germany)
2010-2011
Baylor College of Medicine
2004-2011
✓ In a multicenter study, 120 patients with intracranial aneurysms presenting high surgical risk were treated using electrolytically detachable coils and electrothrombosis via an endovascular approach. The results of treatment in posterior fossa (42 43 aneurysms) are presented. most frequent clinical presentation was subarachnoid hemorrhage (24 cases). follow-up periods ranged from 1 week to 18 months. Complete aneurysm occlusion obtained 13 16 small neck four 26 wide-necked aneurysms. A 70%...
THE MAJOR CAUSES of mortality and morbidity in patients surviving the rupture a saccular aneurysm are subsequent bleeding vasospasm. The purpose this study was to evaluate influence early treatment ruptured aneurysms with Guglielmi detachable coils on incidence bleeding. Thirteen were treated within 72 hours initial coils. Excluding three who died 2, 4, 12 weeks after hemorrhage, all others have been followed up for intervals between 6 36 months (mean, 16 mo). None these had either clinical...
<h3>BACKGROUND AND PURPOSE:</h3> The viability of both brain parenchyma and vascular anatomy is important in estimating the risk potential benefit revascularization patients with acute cerebral ischemia. We tested hypothesis that when used conjunction IV contrast, FD-CT imaging would provide anatomic physiologic information correlate well obtained by using standard multisection CT techniques. <h3>MATERIALS METHODS:</h3> Imaging (FD-CT), vasculature (FD-CTA), blood volume (FD-CBV) was...
THERE IS STRONG evidence indicating hemodynamic stress as an underlying cause for saccular intracranial aneurysm growth, thrombosis, and/or rupture. We examined flow fields encountered in models of cerebral aneurysms having a lateral (originating from the side artery, not at branch point) geometric configuration. Shear and pressure gradients acting on walls under variety conditions were evaluated. For this purpose, two-dimensional finite-element computer model steady-flow state was...
Color has been shown to facilitate both visual search and recognition tasks. It was our purpose examine the impact of a color-coding algorithm on interpretation 2D-DSA acquisitions by experienced inexperienced observers.Twenty-six obtained as part routine clinical care from subjects with variety cerebrovascular disease processes were selected an internal data base so include states (aneurysms, AVMs, fistulas, stenosis, occlusions, dissections, tumors). Three 3 less observers each prerelease...
<h3>BACKGROUND AND PURPOSE:</h3> The WEB is an intrasaccular flow disrupter dedicated to EVT of IA. We report our initial experience in a series patients treated with this device. <h3>MATERIALS METHODS:</h3> This prospective study was approved by the authors9 ethical committees. Nineteen 20 unruptured wide-neck bifurcation IAs were placement. Technical issues, immediate posttreatment angiographic findings, and clinical imaging follow-up at 3, 6, 12 months assessed. <h3>RESULTS:</h3> Failure...
<h3>BACKGROUND AND PURPOSE:</h3> Conventional 3D-DSA volumes are reconstructed from a series of projections containing temporal information. It was our purpose to develop technique which would generate fully time-resolved vascular having better spatial and resolution than that is available with CT or MR angiography. <h3>MATERIALS METHODS:</h3> After single contrast injection, the mask fill rotation subtracted create projections. With use these projections, conventional conebeam...
Objective The WEB (WEB aneurysm embolization system, Sequent Medical, Aliso Viejo, California, USA) is a self-expanding, nitinol, mesh device designed to achieve occlusion after endosaccular deployment. Occlusion Scale (WOS) standardized angiographic assessment scale for reporting achieved with intrasaccular implants. This study was performed assess the interobserver variability of WOS. Methods Seven experienced neurovascular specialists were trained apply These physicians independently...
Abstract A new, fast, 2D MR imaging technique allowing passive catheter visualization adequate for use as a tool guiding the movement of during endovascular procedures is described. This samples low spatial frequencies more often than high frequencies; it also uses both k ‐space view sharing and temporal interpolation. Unlike other techniques that exploit magnetic‐susceptibility–induced artifacts, we have adopted strategy takes advantage T 1 ‐shortening effect paramagnetic contrast agents,...
<h3>BACKGROUND AND PURPOSE:</h3> Perfusion and angiographic imaging using intravenous contrast application to evaluate stroke patients is now technically feasible by flat detector CT performed the system. The aim of this pilot study was show feasibility qualitative comparability a novel dynamic perfusion protocol in comparison with multimodal MR protocol. <h3>MATERIALS METHODS:</h3> In 12 acute stroke, were before endovascular treatment. parameter maps (MTT, TTP, CBV, CBF)...
Abstract Objective and Importance: To describe the use of a new imaging tool, angiographic computed tomography, for visualization cell opening strut prolapse Neuroform 2 stent (Boston Scientific/Target, Fremont, CA) placed in curved vasculature treatment basilar tip aneurysm. Clinical Presentation: A 46-year-old woman presented with an unruptured 8-mm aneurysm wide patulous neck. Intervention: 4 × 20-mm was across Angiographic tomographic scanning performed using flat detector biplane system...
Preliminary results obtained with a new computerized fluoroscopic apparatus in examination of the extracranial carotid arteries are described. All patients had clinical signs symptoms occlusive vascular disease. In most cases, image quality was sufficient to display patency internal arteries, excellent correlation between intravenous and conventional angiography. While technique is not totally noninvasive, it does eliminate many risks costs arteriography.
<b>BACKGROUND AND PURPOSE:</b> Cerebral blood volume (CBV) is an important parameter in estimating the viability of brain tissue following ischemic event. We tested hypothesis that C-arm CT measurements CBV would correlate well with those made perfusion (PCT). <b>MATERIALS METHODS:</b> was measured 12 canines by using PCT and CT. Two each technique were on animal; a different injection protocol used for these techniques. performed 64-section V-scanner. biplane Artis dBA system. images...