Loss of the insular ribbon sign

Last revised by Yuranga Weerakkody ◉ on 11 Aug 2022

Citation, DOI, disclosures and article data

Citation:

Weerakkody Y, Hamidi H, Ribeiro N, et al. Loss of the insular ribbon sign. Reference article, Radiopaedia.org (Accessed on 29 Sep 2023) https://doi.org/10.53347/rID-17939

DOI:

https://doi.org/10.53347/rID-17939

Permalink:

https://radiopaedia.org/articles/17939

rID:

17939

Article created:

27 May 2012, Yuranga Weerakkody ◉

Disclosures:

At the time the article was created Yuranga Weerakkody had no recorded disclosures.

View Yuranga Weerakkody's current disclosures

Last revised:

11 Aug 2022, Yuranga Weerakkody ◉

Disclosures:

At the time the article was last revised Yuranga Weerakkody had no financial relationships to ineligible companies to disclose.

View Yuranga Weerakkody's current disclosures

Revisions:

16 times, by 6 contributors - see full revision history and disclosures

Systems:

Central Nervous System

Sections:

Signs

Synonyms:

Loss of the insular ribbon (LIR)
LIR sign
Loss of the insular ribbon
Insular ribbon loss
Insular ribbon sign

The loss of the insular ribbon sign refers to a loss of definition of the gray-white interface in the lateral margin of the insular cortex ("insular ribbon") and is considered an early CT sign of MCA infarction.

The insular cortex is more susceptible to ischemia following MCA occlusion than other portions of the MCA territory because it has the least potential for collateral supply from the anterior cerebral and posterior cerebral arteries.