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Intracranial Hemorrhage
. . When faced with analyzing an unknown CT head, I advise you to do the following : 1…..Remember that the normal CT head is symmetrical ( except for the sagittal view ).
2…..If you see an abnormality, note its density and suggest the differential diagnosis of tissue such as : normal variant, malrotation, tumor benign calcifications, fresh blood, old blood, old infarcted tissue, recent infarcted tissue CSF& others Narrowing down of the differential diagnosis will be possible with clinical correlation, e.g. trauma, sudden development of hemiparesis, sudden onset headache, gradual development of symptoms, etc.
CLINICAL PEARL :
Don’t forget to check and see if the patient has a previous CT head—– comparison with the old CT will obviously aid you in your conclusion and treatment mode .
3…..If you believe the lesion is an acute hemorrhage, they will usually fall into four distinct categories : as follows ( Don’t forget to measure the Hounsfield Unit of the lesion—————— fresh blood is approximately + 40 )
A…..Intracerebral Hemorrhage.
B…..Acute Subarachnoid Hemorrhage.
C…..Acute Subdural Hemorrhage.
D…..Acute Epidural Hemorrhage.
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