A5017841782- Cerebrospinal fluid and hydrocephalus
- Fetal and Pediatric Neurological Disorders
- Head and Neck Surgical Oncology
- Meningioma and schwannoma management
- Traumatic Brain Injury and Neurovascular Disturbances
- Ophthalmology and Eye Disorders
- Trigeminal Neuralgia and Treatments
- Neurosurgical Procedures and Complications
- Cerebral Venous Sinus Thrombosis
- Advanced Neuroimaging Techniques and Applications
- Pituitary Gland Disorders and Treatments
- Spinal Dysraphism and Malformations
- Sinusitis and nasal conditions
- Facial Nerve Paralysis Treatment and Research
- Advanced MRI Techniques and Applications
- Vestibular and auditory disorders
- Transplantation: Methods and Outcomes
- Medical Image Segmentation Techniques
- Organ and Tissue Transplantation Research
- Spinal Fractures and Fixation Techniques
- Bone Tumor Diagnosis and Treatments
- Oral and Maxillofacial Pathology
- Growth Hormone and Insulin-like Growth Factors
- Neural and Behavioral Psychology Studies
- Congenital Diaphragmatic Hernia Studies
University Hospitals of Cleveland
2020-2024
Case Western Reserve University
2020-2024
University School
2022-2023
Johns Hopkins University
2011-2020
Johns Hopkins Medicine
2007-2019
Johns Hopkins Hospital
2010-2019
University Radiology
2018
Heliophysics
2018
Le Bonheur Children's Hospital
2018
University of Tennessee Health Science Center
2018
<h3>Objective:</h3> Describe characteristics of small strokes causing acute vestibular syndrome (AVS). <h3>Methods:</h3> Ambispective cross-sectional study patients with AVS (acute vertigo or dizziness, nystagmus, nausea/vomiting, head-motion intolerance, unsteady gait) at least one stroke risk factor from 1999 to 2011 a single referral center. Patients underwent nonquantitative HINTS “plus” examination (head impulse, test-of-skew plus hearing), neuroimaging confirm diagnoses (97% by MRI),...
Strokes can be distinguished from benign peripheral causes of acute vestibular syndrome using bedside oculomotor tests (head impulse test, nystagmus, test-of-skew). Using head test-of-skew is more sensitive and less costly than early magnetic resonance imaging for stroke diagnosis in but requires expertise not routinely available emergency departments. We sought to begin standardizing the diagnostic approach eventual department use through novel application a portable video-oculography...
Pseudotumor cerebri (PTC) is characterized by raised intracranial pressure (ICP) without an identifiable mass, evidence of hydrocephalus, or abnormal cerebrospinal fluid content. In the past, most cases PTC appeared to have no etiology, and thus, they were classified as "idiopathic hypertension" (IIH). Recently, however, a subset patients with presumed IIH has been found cerebral dural sinus stenoses, particularly involving one both transverse sinuses (TS). The belief that stenoses are...
The objective of this study was to test the hypothesis that bitemporal hemianopsia (BHA) is most common visual field (VF) defect in patients with pituitary macroadenoma and assess degree optic pathway compression necessary produce defects.We reviewed MRI findings medical records 119 who had undergone formal assessment VFs. We then evaluated displacement caused by macroadenoma, as observed on MR images. classifications included no contact, abutment but displacement, mild (< 3 mm), moderate (≥...
The ExcelsiusGPS® (Globus Medical, Inc., Audubon, PA) is a next-generation spine surgery robotic system recently approved for use in the United States. objective of current study to assess pedicle screw accuracy and clinical outcomes among two first operative cases utilizing describe novel metric quantify deviation.Two patients who underwent lumbar fusion at single institution with surgical robot were included. Pre-operative trajectory planning was performed from an intra-operative CT scan...
Numerous brain disorders are associated with ventriculomegaly, including both neuro-degenerative diseases and cerebrospinal fluid disorders. Detailed evaluation of the ventricular system is important for these conditions to help understand pathogenesis enlargement elucidate novel patterns ventriculomegaly that can be different diseases. One such disease normal pressure hydrocephalus (NPH), a chronic form in older adults causes dementia. Automatic parcellation into its sub-compartments...
Although frontal cortex is thought to be important in controlling behavior across long periods of time, most studies this area concentrate on neuronal responses instantaneously relevant the current task. In order investigate relationship activity over longer time periods, we trained rhesus monkeys a difficult oculomotor Their performance fluctuated during day, and prefrontal neurons, even measured while waited for targets appear at beginning each set trials, correlated with probabilistic...
Robotics in spinal surgery has significant potential benefits for both surgeons and patients, including reduced surgeon fatigue, improved screw accuracy, decreased radiation exposure, greater options minimally invasive surgery, less time required to train residents on techniques that can have steep learning curves. However, previous robotic systems several drawbacks, which are addressed by the innovative ExcelsiusGPSTM system. The robot is secured operating room floor, not patient. It a...
OBJECTIVE Trigeminal neuralgia (TN) is characterized by intermittent, paroxysmal, and lancinating pain along the distribution of trigeminal nerve. Microvascular decompression (MVD) directly addresses compression The purpose this study was to determine whether patients undergoing MVD as their first surgical intervention experience greater control than who undergo subsequent MVD. METHODS A retrospective review patient records from 1998 2015 identified a total 942 with TN 500 underwent After...
Thin-section MR imaging through the posterior fossa is frequently used for trigeminal neuralgia. Typical heavily T2-weighted methods yield high anatomic detail and contrast between CSF neurovascular structures, but poor vessels nerves. We hypothesized that addition of gadolinium-based material to 3D-constructive interference in steady-state would improve characterization compression.Retrospective review high-resolution MRIs was performed patients without prior microvascular decompression....