A5078002010- Meningioma and schwannoma management
- Glioma Diagnosis and Treatment
- Advanced MRI Techniques and Applications
- Cerebral Venous Sinus Thrombosis
- Fetal and Pediatric Neurological Disorders
- Multiple Sclerosis Research Studies
- Lanthanide and Transition Metal Complexes
- Advanced Neuroimaging Techniques and Applications
- Epilepsy research and treatment
- Oral and Maxillofacial Pathology
- Uterine Myomas and Treatments
- Acute Lymphoblastic Leukemia research
- Endometriosis Research and Treatment
- Soft tissue tumor case studies
- Tumors and Oncological Cases
- Neonatal and fetal brain pathology
- Neurological and metabolic disorders
- Ophthalmology and Eye Disorders
- Medical Imaging and Analysis
- Neurofibromatosis and Schwannoma Cases
- MRI in cancer diagnosis
- Iron Metabolism and Disorders
- Brain Metastases and Treatment
- Hemoglobinopathies and Related Disorders
- Intestinal and Peritoneal Adhesions
American University of Beirut Medical Center
2015-2025
American University of Beirut
2007-2022
American University of Paris
2018
Hôtel-Dieu de France
2006-2009
Saint Joseph University
2008-2009
National Marrow Donor Program
2008
Saint Joseph's University
2008
Johns Hopkins University
2005-2007
Johns Hopkins Medicine
2005
Sorbonne Université
2004
To prospectively evaluate the accuracy of magnetic resonance (MR) imaging for preoperative diagnosis deep pelvic endometriosis and extension disease.One hundred ninety-five patients (mean age, 34.2 years; range, 20-71 years) who were suspected having recruited at two institutions. Two experienced radiologists evaluated MR images independently. Deep was defined as implants or tissue masses that appeared hypointense areas and/or hyperintense foci on T1- T2-weighted in following locations:...
Abstract Objective To determine the accuracy of transvaginal sonography (TVS) for diagnosis deep pelvic endometriosis. Methods In a prospective study, 142 women with clinical signs endometriosis underwent TVS followed by surgical and histopathological investigations. The presence extent involving uterosacral ligaments, vagina, rectovaginal septum, intestines, bladder ovaries shown were compared histological findings. sensitivity, specificity, predictive values predicting assessed. Results...
We describe the design and results from BraTS 2023 Intracranial Meningioma Segmentation Challenge. The Challenge differed prior Glioma challenges in that it focused on meningiomas, which are typically benign extra-axial tumors with diverse radiologic anatomical presentation a propensity for multiplicity. Nine participating teams each developed deep-learning automated segmentation models using image data largest multi-institutional systematically expert annotated multilabel multi-sequence...
<b>BACKGROUND AND PURPOSE:</b> Noninvasive diagnosis of brain lesions is important for the correct choice treatment. Our aims were to investigate whether 1) proton MR spectroscopic imaging (<sup>1</sup>H-MRSI) can aid in differentiating between tumors and nonneoplastic lesions, 2) perfusion improve classification. <b>MATERIALS METHODS:</b> We retrospectively examined 69 adults with untreated primary (brain tumors, <i>n</i> = 36; benign 10; stroke, 4; demyelination, stable not confirmed on...
Abstract Meningiomas are the most common primary intracranial tumors and can be associated with significant morbidity mortality. Radiologists, neurosurgeons, neuro-oncologists, radiation oncologists rely on brain MRI for diagnosis, treatment planning, longitudinal monitoring. However, automated, objective, quantitative tools non-invasive assessment of meningiomas multi-sequence MR images not available. Here we present BraTS Pre-operative Meningioma Dataset, as largest multi-institutional...
To investigate whether in vivo proton magnetic resonance spectroscopic imaging (MRSI) can differentiate between 1) tumors and nonneoplastic brain lesions, 2) high- low-grade children.Thirty-two children (20 males 12 females, mean age = 10 +/- 5 years) with primary lesions were evaluated retrospectively. Nineteen patients had a neuropathologically confirmed tumor, 13 benign lesion. Multislice MRSI was performed at TE 280 msec. Ratios of N-acetyl aspartate/choline (NAA/Cho), NAA/creatine (Cr),...
To determine the incidence of dehiscence between vestibular aqueduct and jugular bulb on computed tomography (CT) scans assess its implication as a cause dizziness or hearing loss.Two hundred temporal bone CT were evaluated for prevalence aqueduct. Correlation imaging findings clinical data was performed.A total 11.5% patients had with aqueduct; 75% these cases occurred right side in setting high bulb. Nine (39.1%) 23 dizziness, 11 (47.8%) loss. The correlation loss, not significant.The...
<b>BACKGROUND AND PURPOSE:</b> Hereditary spastic paraplegia (HSP) is a disorder characterized by degeneration of the corticospinal tracts and posterior column spinal cord. Previously described radiologic findings included nonspecific brain abnormalities such as atrophy white matter lesions, well In our study, we aimed to better characterize spine MR imaging in series patients with HSP. <b>MATERIALS METHODS:</b> Nine from 4 different Lebanese families autosomal recessive form HSP were study....
Background: Hypercoagulability and venous thromboembolism are common in patients with β-thalassemia intermedia (TI), especially the splenectomized adult. Although arterial involvement is not commonly reported, we have recently observed a high prevalence (60%) of silent brain infarction on MRI 30 adults TI. The pathophysiology these white matter lesions remains unknown. Methods: In this prospective work, evaluated magnetic resonance angiography (MRA) scans same cohort patients. Data collected...
Few articles in the literature have looked at diameter of optic nerve on MR imaging, especially children, whom observations are subjective and no normative data exist. The aim this study was to establish a base for measurements imaging pediatric population.This retrospective subjects (younger than 18 years age) Department Diagnostic Radiology American University Beirut Medical Center, Beirut, Lebanon. were obtained by 3 raters axial coronal sections mm (retrobulbar) 7 (intraorbital)...
L-asparaginase is a critical component in the treatment of acute lymphoblastic leukemia children. It known to cause coagulation abnormalities, thrombosis and hemorrhage central nervous system addition vasculitis hypersensitivity reactions. The purpose this article present first case-series posterior reversible encephalopathy syndrome (PRES) associated with treatment. We report 3 cases children who developed seizures altered sensorium after therapy. MRI showed increased T(2) signal intensity...
We describe the design and results from BraTS 2023 Intracranial Meningioma Segmentation Challenge. The Challenge differed prior Glioma challenges in that it focused on meningiomas, which are typically benign extra-axial tumors with diverse radiologic anatomical presentation a propensity for multiplicity. Nine participating teams each developed deep-learning automated segmentation models using image data largest multi-institutional systematically expert annotated multilabel multi-sequence...
Dimethylsulfoxide (DMSO) is a solvent commonly used for the cryopreservation of autologous peripheral blood stem cells (APBSC). Side effects upon infusion DMSO-cryopreserved APBSC mainly consist nausea, emesis, chills, rigors, and cardiovascular events, such as bradyarrhythmia or hypotension. We report case patient who received after myeloablative chemotherapy relapsing lymphoma. The developed rare reaction during manifesting transient global amnesia. clinical course described an explanation...
Objective: This pilot study aims to identify white matter (WM) tract abnormalities in Autism Spectrum Disorders (ASD) toddlers and pre-schoolers by Diffusion Tensor Imaging (DTI), and, correlate imaging findings with clinical improvement after early interventional Applied Behaviour Analysis (ABA) therapies Verbal Milestones Assessment Placement Program (VB-MAPP). Methods: DTI scans were performed on 17 ASD toddlers/pre-schoolers seven age-matched controls. Nine patients had follow-up MRI...
Objective: To evaluate prospectively the frequency of epileptogenic lesions in a consecutive cohort elderly patients presenting with new onset unprovoked seizures, and who underwent complete evaluation including dedicated epilepsy protocol MRI. Methods materials: We included all 60 years or older participated prospective study on epilepsy. The work-up acquisition MRI 3 h video/EEG recording. evaluated types whole stratified those variables by age, gender, number seizures at presentation....
Solitary fibrous tumors (SFTs) are rare mesenchymal neoplasms that arise most commonly in the pleura but have been increasingly reported extrapleural sites. The authors report case of an SFT scalp manifested as enlarging mass a 2-year-old boy. was surgically excised. Histological examination showed it to be composed fusiform cells variable cellularity with central hyalinization zone. Immunohistochemical staining positive for CD34 and negative smooth muscle actin, S100 protein, desmin,...