CT: Coronal orbit  
 

This is a contrast enhanced, arterial phase CT. The arteries are filled with contrast, but it has not yet reached the venous system. The orbital fat is very black, in contrast to the medium gray density of the extraocular muscles.

 
 

Identify the following:

1. optic nerve

2. medial rectus

3. inferior rectus

4. lateral rectus

5. superior rectus & levator palpebrae superioris

6. superior oblique

7. ophthalmic artery

8. orbital fat

 

 

 
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