Fogging phenomenon
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Fogging phenomenon in computerized tomography (CT) scanning of the head is vanishing signs of an infarct on the serial CT imaging in a patient with a recent stroke.[1] It is a reversal of the hypodensity on the CT after an acute ischemic stroke. This happens as a result of re-nourishment of the infarcted area in subacute phase about one to three weeks after the stroke.[2] In fact, resolution of the edema, which was caused by the accident, leads to increased attenuation of infarcted area that may regain near-normal density and mask the stroke. However, in the third week, parenchymal volume loss commonly appears as a hypoattenuation (decreased attenuation) with a negative mass effect (shrinkage).[3]
References
[edit]- ^ Gaillard, Frank. "Fogging phenomenon | Radiology Reference Article | Radiopaedia.org". Radiopaedia.
- ^ Yannes, Michael; Frabizzio, Jennifer V.; Shah, Qaisar A. (June 25, 2013). "Reversal of CT hypodensity after acute ischemic stroke". Journal of Vascular and Interventional Neurology. 6 (1): 10–14. PMC 3693996. PMID 23826437.
- ^ Gaillard, Frank. "Ischemic stroke | Radiology Reference Article | Radiopaedia.org". Radiopaedia.
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