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Revision as of 06:03, 5 January 2025 editNetha Hussain (talk | contribs)Autopatrolled, Extended confirmed users11,930 edits added Category:Radiologic signs using HotCat← Previous edit Revision as of 06:04, 5 January 2025 edit undoNetha Hussain (talk | contribs)Autopatrolled, Extended confirmed users11,930 edits Adding short description: "Neuroradiologic finding of splenial pathology"Tag: Shortdesc helperNext edit →
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{{Short description|Neuroradiologic finding of splenial pathology}}
The boomerang sign is a radiological finding observed on magnetic resonance imaging (MRI) of the brain, particularly in diffusion-weighted imaging (DWI) sequences. It refers to a characteristic boomerang-shaped area of restricted diffusion in the splenium of the ] due to ].<ref>{{cite journal |last1=Pandian |first1=Jeyaraj Durai |last2=Henderson |first2=Robert D. |title=“Boomerang sign” in the splenium of the corpus callosum |journal=Medical Journal of Australia |date=5 December 2005 |volume=183 |issue=11 |url=https://www.mja.com.au/journal/2005/183/11/boomerang-sign-splenium-corpus-callosum |access-date=5 January 2025 |issn=0025-729X}}</ref> This sign is associated with various neurological conditions and is considered a non-specific marker of splenial pathology, often reversible depending on the underlying cause.<ref name=rsna>{{cite journal |last1=Starkey |first1=Jay |last2=Kobayashi |first2=Nobuo |last3=Numaguchi |first3=Yuji |last4=Moritani |first4=Toshio |title=Cytotoxic Lesions of the Corpus Callosum That Show Restricted Diffusion: Mechanisms, Causes, and Manifestations |journal=RadioGraphics |date=March 2017 |volume=37 |issue=2 |pages=562–576 |doi=10.1148/rg.2017160085 |url=https://pubs.rsna.org/doi/10.1148/rg.2017160085 |access-date=5 January 2025 |issn=0271-5333}}</ref><ref>{{cite journal |last1=Mathew |first1=Thomas |title=“Boomerang Plus Sign” in Rickettsial Encephalitis |journal=Pediatric Neurology |url=https://www.pedneur.com/article/S0887-8994(15)00150-2/fulltext |access-date=5 January 2025}}</ref> The boomerang sign is a radiological finding observed on magnetic resonance imaging (MRI) of the brain, particularly in diffusion-weighted imaging (DWI) sequences. It refers to a characteristic boomerang-shaped area of restricted diffusion in the splenium of the ] due to ].<ref>{{cite journal |last1=Pandian |first1=Jeyaraj Durai |last2=Henderson |first2=Robert D. |title=“Boomerang sign” in the splenium of the corpus callosum |journal=Medical Journal of Australia |date=5 December 2005 |volume=183 |issue=11 |url=https://www.mja.com.au/journal/2005/183/11/boomerang-sign-splenium-corpus-callosum |access-date=5 January 2025 |issn=0025-729X}}</ref> This sign is associated with various neurological conditions and is considered a non-specific marker of splenial pathology, often reversible depending on the underlying cause.<ref name=rsna>{{cite journal |last1=Starkey |first1=Jay |last2=Kobayashi |first2=Nobuo |last3=Numaguchi |first3=Yuji |last4=Moritani |first4=Toshio |title=Cytotoxic Lesions of the Corpus Callosum That Show Restricted Diffusion: Mechanisms, Causes, and Manifestations |journal=RadioGraphics |date=March 2017 |volume=37 |issue=2 |pages=562–576 |doi=10.1148/rg.2017160085 |url=https://pubs.rsna.org/doi/10.1148/rg.2017160085 |access-date=5 January 2025 |issn=0271-5333}}</ref><ref>{{cite journal |last1=Mathew |first1=Thomas |title=“Boomerang Plus Sign” in Rickettsial Encephalitis |journal=Pediatric Neurology |url=https://www.pedneur.com/article/S0887-8994(15)00150-2/fulltext |access-date=5 January 2025}}</ref>
==Anatomy and appearance== ==Anatomy and appearance==

Revision as of 06:04, 5 January 2025

Neuroradiologic finding of splenial pathology

The boomerang sign is a radiological finding observed on magnetic resonance imaging (MRI) of the brain, particularly in diffusion-weighted imaging (DWI) sequences. It refers to a characteristic boomerang-shaped area of restricted diffusion in the splenium of the corpus callosum due to cytotoxic edema. This sign is associated with various neurological conditions and is considered a non-specific marker of splenial pathology, often reversible depending on the underlying cause.

Anatomy and appearance

The splenium of the corpus callosum is the posterior part of the corpus callosum, a major white matter structure connecting the two cerebral hemispheres. On MRI, the boomerang sign appears as a boomerang-shaped hyperintense area on DWI. There is a corresponding low signal intensity on the apparent diffusion coefficient (ADC) map, indicating true restricted diffusion. The sign is often localized within the central or posterior splenium.

References

  1. Pandian, Jeyaraj Durai; Henderson, Robert D. (5 December 2005). ""Boomerang sign" in the splenium of the corpus callosum". Medical Journal of Australia. 183 (11). ISSN 0025-729X. Retrieved 5 January 2025.
  2. ^ Starkey, Jay; Kobayashi, Nobuo; Numaguchi, Yuji; Moritani, Toshio (March 2017). "Cytotoxic Lesions of the Corpus Callosum That Show Restricted Diffusion: Mechanisms, Causes, and Manifestations". RadioGraphics. 37 (2): 562–576. doi:10.1148/rg.2017160085. ISSN 0271-5333. Retrieved 5 January 2025.
  3. Mathew, Thomas. ""Boomerang Plus Sign" in Rickettsial Encephalitis". Pediatric Neurology. Retrieved 5 January 2025.
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