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Identification
Who & When Name, Age, & Date     This crucial information is printed on each CT image. Be especially careful to check dates! 
Orientation Right - Left, Anterior -  Posterior, & Scale Markers
Technique

 

 

 

 Region and Planes  Head CT's are usually transaxial and extend from the foramen magnum to vertex. Other planes used are coronal and sagittal.

Brain windows are standard. Bone windows and Subdural windows can make a big difference in resolution for these parts of the examination.

Slice Thickness can vary from 1 mm to 10 mm. Thin cuts can help clarify imaging of small areas such as the internal auditory canals.

Plain scans are done without infusion of any medication or agents. IV infusion for contrast enhancement makes some lesions (esp. tumours) much more visible.  

Follow the links at left for more information!
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