A5057009740- Intracranial Aneurysms: Treatment and Complications
- Intracerebral and Subarachnoid Hemorrhage Research
- Vascular Malformations Diagnosis and Treatment
- Advanced MRI Techniques and Applications
- MRI in cancer diagnosis
- Cerebrovascular and Carotid Artery Diseases
- Ultrasound and Hyperthermia Applications
- Cerebral Venous Sinus Thrombosis
- Lanthanide and Transition Metal Complexes
- Hearing, Cochlea, Tinnitus, Genetics
- Radiology practices and education
- Peripheral Artery Disease Management
- Acute Ischemic Stroke Management
- Multiple Sclerosis Research Studies
- Vestibular and auditory disorders
- Vascular Procedures and Complications
- Total Knee Arthroplasty Outcomes
- Radiation Dose and Imaging
- Artificial Intelligence in Healthcare and Education
- Photoacoustic and Ultrasonic Imaging
- Venous Thromboembolism Diagnosis and Management
- Ultrasound in Clinical Applications
- Atomic and Subatomic Physics Research
- Vascular Anomalies and Treatments
- Hallucinations in medical conditions
University of California, San Francisco
2023-2024
University of California System
2024
Neurological Surgery
2024
University of Pennsylvania
2016-2023
Laboratoire d’Imagerie Biomédicale
2023
San Francisco General Hospital
2023
Hospital of the University of Pennsylvania
2018-2022
Arterial spin labeling and phase contrast magnetic resonance imaging provide independent non-invasive methods for measuring cerebral blood flow. We compared global flow measurements obtained using pseudo-continuous arterial in 436 middle-aged subjects acquired at two sites the NHLBI CARDIA multisite study. Cerebral measured by (CBF PC : 55.76 ± 12.05 ml/100 g/min) was systematically higher ( p < 0.001) more variable than PCASL 47.70 9.75). The correlation between values from modalities...
Patients with multiple sclerosis routinely have MR imaging contrast every 6-12 months to assess response medication. Multiple recent studies provide evidence of tissue deposition agents, questioning the long-term safety these agents. The goal this retrospective image-analysis study was determine whether could be reserved for only those patients who show new MS lesions on follow-up examinations.We retrospectively reviewed brain MRIs 138 patients. To increase our sensitivity, we used a...
While many of the causes pulsatile tinnitus (PT) are treatable with endovascular approaches, risks treatment must be balanced underlying cause and psychological impact symptoms on patients. physicians have anecdotal experience, comorbid relationship depression anxiety PT is unknown. The objectives this study to quantify prevalence anxiety, and, identify demographic risk factors for impactful in patients PT.Subjects recruited from online groups filled out secure questionnaires that included...
<h3>SUMMARY:</h3> Transcranial focused ultrasound (FUS) is a versatile, MR-guided, incisionless intervention with diagnostic and therapeutic applications for neurologic psychiatric diseases. It currently FDA-approved as thermoablative treatment of essential tremor Parkinson disease. However, other FUS including BBB opening applications, sonodynamic therapy, histotripsy, low-intensity neuromodulation are all in clinical trials. While targeting disease has classically relied on an indirect,...
This is a case report of an adult with chronic subdural hematoma (cSDH) who underwent endovascular treatment for middle meningeal artery (MMA) embolization. There was prominent meningo-ophthalmic branch absence ophthalmic from the internal carotid artery. MMA embolization performed utilizing particles no complications and resolution cSDH within 4 months. demonstrates that despite extreme variant anatomy, feasible, effective, safe when appropriate techniques are used.
Background Intracranial dural arteriovenous (AV) fistula classifications focus on presence/absence of retrograde flow in the cortical veins brain as this angiographic finding portends a worse prognosis. However, prior categorization systems AV shunts spine do not incorporate these features. We propose an updated classification for spinal shunting lesions that terms any lesion with vein or cord medullary “high risk”. To present classification, we analyzed our center’s most recent experience...
Abstract Background Although not standard of care, Cystic Fibrosis patients with recurrent hemoptysis occasionally have coil embolization bronchial arteries. In the event recanalization these arteries in this specific subset patients, presence indwelling coils makes prospect conventional particle more difficult, preventing both adequate catheterization coiled segment and reflux particles. Case presentation report, we describe a case artery complex patient massive from recanalized utilizing...
Imaging and autopsy studies show intracranial gadolinium deposition in patients who have undergone serial contrast-enhanced MRIs. This observation has raised concerns when using contrast administration receive frequent To address this, we implemented a contrast-conditional protocol wherein is administered only for multiple sclerosis (MS) with imaging evidence of new disease activity on precontrast imaging. In this study, explore the economic impact our MRI protocol.We compared scanner time...
Cervical carotid artery dissections (CAD) usually produce ischemic symptoms as a result of thromboembolic phenomena, but hemodynamic insufficiency from flow-limiting stenosis can cause in few patients [1]. CAD the distal cervical and petrous ICA be challenging to treat, particularly presence vessel kinking or marked tortuosity ICAs. The stent systems used for atherosclerotic disease at proximal bulb are typically too stiff large safely track into tortuous artery, low radial force Pipeline...
Objectives Inadequate follow-up of incidental imaging findings (IIFs) can result in poor patient outcomes, dissatisfaction, and provider malpractice. At our institution, radiologists flag IIFs during report dictation to trigger electronic health record (EHR) notifications providers patients. Nurse coordinators directly contact patients or their primary care physicians (PCPs) regarding if is not completed within the recommended time frame. Despite these interventions, many PCPs remain unaware...
Objectives: While hemorrhage arising from ruptured arteriovenous malformations (AVMs) is usually evident on multidetector non-contrast computed tomography (NCCT), unruptured AVMs can be below the limits of detection. We performed a retrospective review NCCT patients with proven diagnosis AVM to determine if advances in CT technology have made them more apparent and what features predict their Material Methods: Twenty-five NCCTs met inclusion criteria having angiography or MR without...
Cancers frequently metastasize to the spine, where they can cause severe morbidity, including pain, vertebral collapse, and paralysis. Accurate assessment timely communication of actionable imaging findings are critical. We developed a scoring mechanism capture key features examinations performed detect characterize spinal metastases in patients with cancer. An automated system was relay those institution’s spine oncology team expedite treatment. This report describes scheme, results...
<h3>Introduction</h3> Patients with pulsatile tinnitus (PT) can have potentially devastating psychological impact, which effect how best to treat these patients, many options include endovascular treatment. <h3>Aim of Study</h3> Objectives this study quantifying the prevalence depression and anxiety in United States PT population as well identifying demographic risks associated effects on anxiety. <h3>Methods</h3> Subjects were recruited from online groups. Questionnaires utilizing validated...
Accounting for 10–15% of intracranial arteriovenous malformations, dural fistulas (dAVFs) are abnormal communications between typically arteries and venous sinuses, meningeal veins or cortical veins. Likely the most dangerous form unruptured vascular malformations
<h3>Purpose</h3> There is now class 1a evidence for the efficacy of mechanical thrombectomy in patients with acute ischemic stroke and a large vessel occlusion (LVO).<sup>1 2</sup> Failure to recanalize portends poor prognosis patient decreased chance good function outcome (modified Rankin Score 2 or less). The purpose our study was evaluate incidence causes persistent intracranial following at high-volume comprehensive center, goal providing some insight into potential ways increase...
<h3>Purpose</h3> Supported by longstanding Class I evidence from the cardiology literature showing safety of transradial artery access for coronary angiography (Choe <i>et al</i>., 2016), an increasing number neurointerventionalists have adopted approach diagnostic cerebral (Almallouhi 2020). A recent study specifically showed noninferiority arterial compared with transfemoral (Stone As becomes more widely adopted, a few important caveats become apparent that may preclude safe (namely...
<h3>Purpose</h3> Mechanical thrombectomy using stent retrievers, aspiration catheters, or a combination of both are commonly used in practice to treat large vessel occlusion. Recent MR Vessel Wall Imaging (VWI) studies patients status post the acute and subacute phases have shown persistent increased wall enhancement when compared controls, which is likely representative endothelial damage as on earlier histopathologic studies. In this study 10 who underwent at our institution, we...