CT brain

head and neck

chest

spine

Ref. https://radiopaedia.org/articles/windowing-ct

Brain lobes 

frontal lobes / parietal lobes by central sulcus (arrowheads)

frontal lobes large > parietal > occipital lobes (relatively )

The most anterior parts of the frontal lobes occupy the anterior cranial fossae

The temporal lobes occupy the middle cranial fossae

The cerebellum and brain stem occupy the posterior fossa