Subdural empyema MRI: Difference between revisions
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{{Subdural empyema}} | {{Subdural empyema}} | ||
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==Overview== | |||
MRI in the optimal imaging study in the diagnosis of subdural empyema. Findings on MRI suggestive of subdural empyema are similar to those on [[CT scan]], and include a crescent or bi-convex shaped collection. A surrounding membrane that enhances intensely and uniformly following [[gadolinium]] enhancement is typically identified and may also demonstrate restricted diffusion.<ref name= SDEct> Subdural empyema. Radiopaedia.org (2015). http://radiopaedia.org/articles/subdural-empyema Accessed on December 4, 2015.</ref> | |||
==MRI== | |||
[[MRI]] with [[gadolinium]] enhancement is considered the optimal imaging study for intracranial and spinal subdural empyema. MRI clearly reveals [[pus]] collections, and potentially [[meningitis]]. The characteristic image suggestive of a subdural empyema on an [[MRI]] is a fluid collection in a crescent shape surrounded by a contrast-enhancing rim. On [[MRI]], subdural empyema appears with a low signal on T1 and a high signal on T2 weighted images.<ref name="AgrawalTimothy2007">{{cite journal|last1=Agrawal|first1=Amit|last2=Timothy|first2=Jake|last3=Pandit|first3=Lekha|last4=Shetty|first4=Lathika|last5=Shetty|first5=J.P.|title=A Review of Subdural Empyema and Its Management|journal=Infectious Diseases in Clinical Practice|volume=15|issue=3|year=2007|pages=149–153|issn=1056-9103|doi=10.1097/01.idc.0000269905.67284.c7}}</ref> | |||
MRI may be used in [[emergency]] situations, with high level of suspicion, for the potential diagnosis of subdural empyema at a time when symptoms include [[headache]] and [[fever]], and there is absence of focal neurologic signs.<ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560 }} </ref> The [[diffusion MRI|diffusion-weighted imaging]] method increases the precision of diagnosis and offers the ability to monitor [[antibiotic]] therapy.<ref name="Hendaus2013">{{cite journal|last1=Hendaus|first1=Mohammed A.|title=Subdural Empyema in Children|journal=Global Journal of Health Science|volume=5|issue=6|year=2013|issn=1916-9744|doi=10.5539/gjhs.v5n6p54}}</ref> Additionally, the [[MRI]] should be evaluated for the presence of [[epidural abscess]], [[meningitis]], [[brain abscess]], [[cerebral edema]], [[sinusitis]], [[otitis]], and [[mastoiditis]].<ref name="pmid12521560">{{cite journal| author=Greenlee JE| title=Subdural Empyema. | journal=Curr Treat Options Neurol | year= 2003 | volume= 5 | issue= 1 | pages= 13-22 | pmid=12521560 | doi= | pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12521560 }} </ref> | |||
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[[Image:Subdural empyema MRI.jpg|thumb|center|MRI demonstrating extensive subdural collections with rim enhancement and diffusion restriction, consistent with subdural empyema]] | |||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} | ||
{{WH}} | {{WH}} | ||
{{WS}} | {{WS}} | ||
Latest revision as of 18:53, 18 September 2017
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American Roentgen Ray Society Images of Subdural empyema MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]; Anthony Gallo, B.S. [3]
Overview
MRI in the optimal imaging study in the diagnosis of subdural empyema. Findings on MRI suggestive of subdural empyema are similar to those on CT scan, and include a crescent or bi-convex shaped collection. A surrounding membrane that enhances intensely and uniformly following gadolinium enhancement is typically identified and may also demonstrate restricted diffusion.[1]
MRI
MRI with gadolinium enhancement is considered the optimal imaging study for intracranial and spinal subdural empyema. MRI clearly reveals pus collections, and potentially meningitis. The characteristic image suggestive of a subdural empyema on an MRI is a fluid collection in a crescent shape surrounded by a contrast-enhancing rim. On MRI, subdural empyema appears with a low signal on T1 and a high signal on T2 weighted images.[2] MRI may be used in emergency situations, with high level of suspicion, for the potential diagnosis of subdural empyema at a time when symptoms include headache and fever, and there is absence of focal neurologic signs.[3] The diffusion-weighted imaging method increases the precision of diagnosis and offers the ability to monitor antibiotic therapy.[4] Additionally, the MRI should be evaluated for the presence of epidural abscess, meningitis, brain abscess, cerebral edema, sinusitis, otitis, and mastoiditis.[3]
References
- ↑ Subdural empyema. Radiopaedia.org (2015). http://radiopaedia.org/articles/subdural-empyema Accessed on December 4, 2015.
- ↑ Agrawal, Amit; Timothy, Jake; Pandit, Lekha; Shetty, Lathika; Shetty, J.P. (2007). "A Review of Subdural Empyema and Its Management". Infectious Diseases in Clinical Practice. 15 (3): 149–153. doi:10.1097/01.idc.0000269905.67284.c7. ISSN 1056-9103.
- ↑ 3.0 3.1 Greenlee JE (2003). "Subdural Empyema". Curr Treat Options Neurol. 5 (1): 13–22. PMID 12521560.
- ↑ Hendaus, Mohammed A. (2013). "Subdural Empyema in Children". Global Journal of Health Science. 5 (6). doi:10.5539/gjhs.v5n6p54. ISSN 1916-9744.