
The labelled structures are:
sigmoid sinus
sigmoid sinus
transverse sinus
internal jugular vein
cervical segment of the internal carotid artery
sphenoparietal sinus
internal jugular vein
transverse sinus
posterior portion of the superior sagittal sinus
mid portion of the superior sagittal sinus
confluence of the sinuses (torcula)
inferior sagittal sinus
great cerebral vein (of Galen)
straight sinus
occipital sinus
anterior portion of the superior sagittal sinus
internal cerebral vein
internal cerebral vein
basal vein (of Rosenthal)
cavernous sinus
transverse sinus
cervical segment of the internal carotid artery
inferior petrosal sinus
internal jugular vein
sigmoid sinus

The same normal brain CTV without labels for reference.
Case Discussion
The labelled structures are:
sigmoid sinus
sigmoid sinus
transverse sinus
internal jugular vein
cervical segment of the internal carotid artery
sphenoparietal sinus
internal jugular vein
transverse sinus
posterior portion of the superior sagittal sinus
mid portion of the superior sagittal sinus
confluence of the sinuses (torcula)
inferior sagittal sinus
great cerebral vein (of Galen)
straight sinus
occipital sinus
anterior portion of the superior sagittal sinus
internal cerebral vein
internal cerebral vein
basal vein (of Rosenthal)
cavernous sinus
transverse sinus
cervical segment of the internal carotid artery
inferior petrosal sinus
internal jugular vein
sigmoid sinus