forward, nor was he able to understand a request to spell it backward. The rest of the physical and neurologic examination revealed no abnormalities. Extensive laboratory work-up was conducted and included the following: toxicology screening; screening for HIV-1, HIV-2, and syphilis treponemal antibodies; COVID-19 polymerase chain reaction; and measurement of B1 and B12 levels. The results of screening were negative. Cerebrospinal fluid (CSF) assays, including CSF oligoclonal bands and CSF flow cytometry, revealed values within normal limits. CT of the brain without intravenous contrast material was performed in the emergency department to rule out acute intracranial abnormality (Fig 1). Multiplanar multisequence MRI of the brain without and with intravenous contrast material was ordered for further assessment (Figs 2-4). CT images of chest, abdomen, and pelvis were unremarkable (images not shown).
Keyphrases
- contrast enhanced
- cerebrospinal fluid
- human immunodeficiency virus
- emergency department
- flow cytometry
- hiv positive
- antiretroviral therapy
- hiv testing
- computed tomography
- hiv infected
- men who have sex with men
- magnetic resonance imaging
- magnetic resonance
- hepatitis c virus
- hiv aids
- deep learning
- sars cov
- high dose
- coronavirus disease
- white matter
- image quality
- mental health
- optical coherence tomography
- convolutional neural network
- cerebral ischemia
- high throughput
- positron emission tomography
- respiratory failure
- liver failure
- diffusion weighted imaging
- low dose
- drug induced
- south africa
- aortic dissection
- brain injury