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Normal CT in the axial plane of the brain, orbits, and skull base. A. Image through the cerebral hemispheres at the level of the corona radiata. The dense
bone of the calvarium is white, and fat-containing subcutaneous tissue is dark. Gray matter appears denser than white matter due to its lower lipid content.
B. Image at the level of the lenticular nuclei. The caudate and lenticular nuclei are denser than the adjacent internal capsule. CSF within the frontal horns
of the lateral ventricles as well as surrounding the slightly calcified pineal body appears dark. C. Image through the mid-orbits. The sclera appears as a
dense band surrounding the globe. The optic nerves are surrounded by dark orbital fat. The medial and lateral rectus muscles lie along the orbital walls
and have a fusiform shape. Air within the nasopharynx and paranasal sinuses appears dark. D. Image at the base of the skull, digitally adjusted to
Source: Diagnostic Testing in Neurologic Disease, Adams and Victor's Principles of Neurology, 11e
visualize bone (“bone window”), showing the basal occipital and temporal bones, clivus, the bony structures of the posterior nasopharynx, aerated mastoid
Citation:
Ropper
AH,and
Samuels
MA,structures,
Klein JP, Prasad
S. Adams
and in
Victor's
Principles
of Neurology, 11e; 2015 Available at:
air cells, internal
auditory
canals
inner ear
as well as
the sutures
the occipital
bone.
http://mhmedical.com/ Accessed: May 03, 2017
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