Brain abscess CT: Difference between revisions
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==Overview== | ==Overview== | ||
The diagnosis is established by a [[computed tomography]] (CT) (with contrast) scan. | The diagnosis of brain abscesses is established by a [[computed tomography]] (CT) (with contrast) scan. | ||
==CT== | ==CT== | ||
At the initial phase of the inflammation (which is referred to as [[cerebritis]]), the immature lesion does not have a capsule and it may be difficult to distinguish it from other space-occupying lesions or infarcts of the brain. Within 4-5 days the inflammation and the concomitant dead brain tissue are surrounded with a capsule, which gives the lesion the famous ring-enhancing appearance on CT examination with contrast (since intravenously applied contrast material can not pass through the capsule, it is collected around the lesion and looks as a ring surrounding the relatively dark lesion). [[Lumbar puncture]] procedure, which is performed in many infectious disorders of the central nervous system is contraindicated in this condition (as it is in all space-occupying lesions of the brain) because removing a certain portion of the | At the initial phase of the inflammation (which is referred to as [[cerebritis]]), the immature lesion does not have a capsule and it may be difficult to distinguish it from other space-occupying lesions or infarcts of the brain. Within 4-5 days, the inflammation and the concomitant dead brain tissue are surrounded with a capsule, which gives the lesion the famous ring-enhancing appearance on CT examination with contrast (since intravenously applied contrast material can not pass through the capsule, it is collected around the lesion and looks as a ring surrounding the relatively dark lesion). [[Lumbar puncture]] procedure, which is performed in many infectious disorders of the central nervous system is contraindicated in this condition (as it is in all space-occupying lesions of the brain) because removing a certain portion of the cerebral spinal fluid (CSF) may alter the concrete intracranial pressure balances and cause a part of the brain tissue to move out of the skull ([[brain herniation]]).<ref>Diagnosis, Brain Abscess, July 21, 2015 https://en.wikipedia.org/wiki/Brain_abscess#Treatment Accessed on October 19, 2015</ref> | ||
==References== | ==References== | ||
Revision as of 19:12, 19 October 2015
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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American Roentgen Ray Society Images of Brain abscess CT |
Overview
The diagnosis of brain abscesses is established by a computed tomography (CT) (with contrast) scan.
CT
At the initial phase of the inflammation (which is referred to as cerebritis), the immature lesion does not have a capsule and it may be difficult to distinguish it from other space-occupying lesions or infarcts of the brain. Within 4-5 days, the inflammation and the concomitant dead brain tissue are surrounded with a capsule, which gives the lesion the famous ring-enhancing appearance on CT examination with contrast (since intravenously applied contrast material can not pass through the capsule, it is collected around the lesion and looks as a ring surrounding the relatively dark lesion). Lumbar puncture procedure, which is performed in many infectious disorders of the central nervous system is contraindicated in this condition (as it is in all space-occupying lesions of the brain) because removing a certain portion of the cerebral spinal fluid (CSF) may alter the concrete intracranial pressure balances and cause a part of the brain tissue to move out of the skull (brain herniation).[1]
References
- ↑ Diagnosis, Brain Abscess, July 21, 2015 https://en.wikipedia.org/wiki/Brain_abscess#Treatment Accessed on October 19, 2015