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
- antiretroviral therapy
- hiv positive
- hiv testing
- men who have sex with men
- magnetic resonance
- magnetic resonance imaging
- hiv infected
- computed tomography
- hepatitis c virus
- deep learning
- image quality
- high dose
- white matter
- hiv aids
- resting state
- convolutional neural network
- dual energy
- coronavirus disease
- optical coherence tomography
- high throughput
- physical activity
- functional connectivity
- blood brain barrier
- diffusion weighted imaging
- respiratory failure
- low dose