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==Normal anatomy==
[[File:Computed tomography of human brain (5).png|thumb|center220px|left|link=CT of normal anatomy of the head|CT of the head with normal anatomy. {{noprint|[[CT of normal anatomy of the head|Click here to scroll through the image stacks.]]}}]]<br clear="all">
==Associated diseases and conditions==
{{Diseases and conditions associated with CT and MRI of the head}}
===Diseases associated mainly with CT===
*[[CT of sinusitis|CT of '''sinusitis''']]
==Evaluation==
Apart from any specific requests in the referral, it is appropriate to scroll through the brain in at least two planes in:
*Parenchymal window, for (at least in people over age 50-60) ischemia or stroke
*Bleeding window (such as center at 80 HU and width 150 HU)
*Bone window for fracture, at least in emergent exams. It also facilitates a quick glance of the mastoid air cells, the middle ears and the paranasal sinuses in case of fluid/mucus filling.
===Very common findings===
<gallery widths=200 heights=220>
File:Periventricular white matter lesions (annotated).jpg|''Periventricular white matter lesions'' should be mentioned since they such patients have increased stroke risk.<ref name="VermeerHollander2003">{{cite journal|last1=Vermeer|first1=Sarah E.|last2=Hollander|first2=Monika|last3=van Dijk|first3=Ewoud J.|last4=Hofman|first4=Albert|last5=Koudstaal|first5=Peter J.|last6=Breteler|first6=Monique M.B.|title=Silent Brain Infarcts and White Matter Lesions Increase Stroke Risk in the General Population|journal=Stroke|volume=34|issue=5|year=2003|pages=1126–1129|issn=0039-2499|doi=10.1161/01.STR.0000068408.82115.D2}}</ref>
</gallery>
==Report==
A succint report only needs to respond to the requests in the referral, as well as additional present findings found upon evaluation.
<br>A somewhat more detailed report includes even the absence of:
*Intracranial bleeding.
*Signs of infarction.
*Skull fracture
{{Reporting}}
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