A5025707977- Spinal Fractures and Fixation Techniques
- Spine and Intervertebral Disc Pathology
- Advanced MRI Techniques and Applications
- Traumatic Brain Injury and Neurovascular Disturbances
- Acute Ischemic Stroke Management
- Polyomavirus and related diseases
- Cytomegalovirus and herpesvirus research
- Radiation Dose and Imaging
- Cardiac Structural Anomalies and Repair
- Advanced X-ray and CT Imaging
- Intracranial Aneurysms: Treatment and Complications
- Management of metastatic bone disease
- Venous Thromboembolism Diagnosis and Management
- Medical Imaging Techniques and Applications
- MRI in cancer diagnosis
- Advanced Neuroimaging Techniques and Applications
- RNA modifications and cancer
- Head and Neck Anomalies
- Neurological Complications and Syndromes
- Neurogenetic and Muscular Disorders Research
- Radiology practices and education
- Clinical practice guidelines implementation
- Healthcare cost, quality, practices
- Healthcare Operations and Scheduling Optimization
- Cerebral Venous Sinus Thrombosis
University of Wisconsin–Madison
2018-2024
University of Vermont
2021
Abbott Northwestern Hospital
2021
Barrow Neurological Institute
2016
University of Freiburg
1997
We assessed narrowing of the spinal canal in 39 burst fractures and fracture-dislocations thoracolumbar vertebrae treated by AO Internal Spinal Fixator, using CT preoperatively at various stages postoperatively. Computer-aided planimetry was used to measure narrowing, its restoration shortly after instrumentation, or 15 months. The mean initial reduction area 63.7% +/- 18.8% normal; this restored a 95.4% 21.2% normal when measured either soon surgery months (p < 0.001 for both groups). There...
Background Deep learning (DL) often requires an image quality metric; however, widely used metrics are not designed for medical images. Purpose To develop metric that is specific to MRI using radiologists rankings and DL models. Study Type Retrospective. Population A total of 19,344 on 2916 unique pairs from the NYU fastMRI Initiative neuro database was neural network‐based training with 80%/20% training/validation split fivefold cross‐validation. Field Strength/Sequence 1.5 T 3 T1, T1...
There has been extensive growth in both the technical development and clinical applications of MRI, establishing this modality as one most powerful diagnostic imaging tools. However, long examination image interpretation times still limit application especially emergent settings. Rapid abbreviated MRI protocols have developed alternatives to standard with reduced times, some cases limited numbers sequences, more efficiently answer specific questions. A group rapid used at authors'...
Immunocompromised patients are susceptible to the same infections as immunocompetent individuals and have an additional unique risk for atypical in central nervous system (CNS). Many CNS carry a poor prognosis if not treated promptly, so it is prudent radiologists recognize key findings high level of suspicion immunocompromised patients. Moreover, patient may no known deficiency but can present with infection their first sign state, thus allowing radiologist be suggest specific workup such...
Three types of cardiac outpouchings are encountered on cardiovascular imaging: diverticula, aneurysms and pseudoaneurysms. The underlying physiology, imaging findings, risk rupture, optimal treatment varies for each a correct diagnosis is critical. We report case rare, incidentally discovered right ventricular aneurysm that was characterized by transthoracic echocardiogram, computed tomography, MRI. reviewed, we discuss the selection modality, keys to distinguishing outpouchings, management...
Background The diagnosis and treatment of acute stroke requires timed coordinated effort across multiple clinical teams. Purpose To analyze the frequency temporal distribution emergent evaluations (ESEs) to identify potential contributory workflow factors that may delay initiation subsequent evaluation emergency department patients. Material Methods A total 719 sentinel ESEs with concurrent neuroimaging were identified over a 22-month retrospective time period. Frequency data tabulated odds...
A 54-year-old man with HIV infection on suppressive antiretroviral therapy (ART) presented progressive gait difficulty over 1 year. MRI demonstrated increasingly predominant white matter hyperintensity and development of abnormal perivascular enhancement (figure 1). An extensive workup excluded atypical infections, CNS lymphoma, sarcoidosis, vasculitis, other autoimmune diseases. Serum viral RNA was 160 copies/mL; CSF 1,390 copies/mL a mild lymphocytic pleocytosis, consistent diagnosis...
Leptomeningeal metastases (LM) are a rare and serious complication of glial tumors. Here we present the first case series MRI features LM in this setting. We sought to determine whether had value as screening exam - detect disease beyond that suspected clinically (both spatially temporally). reviewed all literature relevant characteristics general. records from our Institution over 10 year period for cases glioma with LM. All MRIs each patient were by two authors together findings confirmed...
The use of brain hemodynamics is important in the assessment numerous pathophysiologic conditions. measurement perfusion or delivery blood to tissues by MR imaging essential for neuroradiologists understand and appropriately apply clinical practice. Several different approaches are used. DSC dynamic contrast-enhanced study signal change (according T2* T1, respectively) induced an exogenous contrast agent, allowing CBF, CBV, time-related parameters. Blood oxygen level‐dependent (BOLD)...
MRA is essential for neurovascular evaluation with applications in anatomic mapping, atherosclerotic disease, stroke, aneurysm, vascular malformations, and dysfunction neurodegenerative diseases. TOF the most used technique but has some disadvantages. Many new important advancements flow imaging have emerged both without use of contrast agents. The purpose this article was to highlight appropriate advantages, pitfalls, traditional more advanced techniques including TOF, phase MRA, 4D flow,...