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Congress: ECR24
Poster Number: C-17019
Type: EPOS Radiologist (educational)
DOI: 10.26044/ecr2024/C-17019
Authorblock: G. Tattaresu, G. Mirabella, M. Nicotra, E. David, P. V. Foti, S. Palmucci, A. Basile; Catania/IT
Disclosures:
Giuliana Tattaresu: Nothing to disclose
Gabriele Mirabella: Nothing to disclose
Marco Nicotra: Nothing to disclose
Emanuele David: Nothing to disclose
Pietro Valerio Foti: Nothing to disclose
Stefano Palmucci: Nothing to disclose
Antonio Basile: Nothing to disclose
Keywords: CNS, Neuroradiology brain, MR, Contrast agent-intravenous, Imaging sequences, Cerebrospinal fluid, Infection, Inflammation
Learning objectives This study aims to describe MR protocol and imaging features of meningitis.
Read more Background Meningitis is an inflammatory syndrome involving the meninges and can affect either the leptomeninges (arachnoid and pia mater) with the subarachnoid space and/or the pachymeninge (dura mater). In the first case, the infectious process may extend to the underlying nerve tissue (meningoencephalitis).
Read more Findings and procedure details Meningitis can be caused by a diverse array of infectious agents. Acute forms can be distinguished into lymphocytic (usually viral) and pyogenic (mainly bacterial). Chronic forms (tubercular or granulomatous) can also occur. Bacterial infections can result in high mortality rates and cause significant permanent neurological damage in survivors. The pathogen responsible for the infection may vary depending as shown in Table 1. [fig 1]  There are four common routes through which infectious agents can enter the central nervous system:- Haematogenous spread from a...
Read more Conclusion Post-contrast FLAIR sequences play an essential role in the diagnosis of leptomeningeal disease. The radiologist must be familiar with the basic sequences for the detection of these inflammatory processes as neuroradiology is crucial for an early and complete diagnosis, especially in the recognition of bacterial forms as the prognosis is closely related to the timeliness of therapy.
Read more References -Thakur KT, Wilson MR. Chronic Meningitis. Continuum (Minneap Minn). 2018;24(5, Neuroinfectious Disease):1298-1326. doi:10.1212/CON.0000000000000664-Hazany, S., Go, J. L., & Law, M. (2014). Magnetic resonance imaging of infectious meningitis and ventriculitis in adults. Topics in magnetic resonance imaging : TMRI, 23(5), 315–325. https://doi.org/10.1097/RMR.0000000000000034-Smirniotopoulos, J. G., Murphy, F. M., Rushing, E. J., Rees, J. H., & Schroeder, J. W. (2007). Patterns of contrast enhancement in the brain and meninges. Radiographics : a review publication of the Radiological Society of North America, Inc, 27(2), 525–551. https://doi.org/10.1148/rg.272065155-Mohan,...
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