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The labeled structures are (excluding the correct side):
- frontal crest
- frontal sinus
- falx cerebri
- orbital gyrus
- straight gyrus (gyrus rectus)
- median longitudinal fissure
- crista galli
- inferior oblique muscle
- olfactory fossa
- globe
- superior rectus muscle
- inferior rectus muscle
- lateral rectus muscle
- temporalis muscle
- medial rectus muscle
- forceps minor
- orbital segment of the optic nerve
- genu of the corpus callosum
- superior sagittal sinus
- frontal horn of the lateral ventricle
- orbital apex
- superior orbital fissure
- optic canal
- inferior orbital fissure
- septum pellucidum
- head of the caudate nucleus
- cisternal segment of the optic nerve
- lesser wing of the sphenoid bone
- column of the fornix
- sylvian fissure
- optic chiasm
- clinoid segment of the internal carotid artery
- lentiform nucleus
- optic tract
- M1 segment of the middle cerebral artery
- anterior clinoid process
- body of the corpus callosum
- internal capsule
- body of the fornix
- posterior clinoid process
- body of the caudate nucleus
- mammillary bodies
- Meckel's cave
- body of the lateral ventricle
- third ventricle
- cavernous sinus
- sylvian fissure
- temporal horn of the lateral ventricle
- centrum semiovale
- basilar artery
- carotid canal
- external capsule
- cingulate gyrus
- crura of the fornix
- operculum
- insular cortex
- cerebral peduncle (crus)
- pineal gland
- midbrain
- pons
- cingulate sulcus
- tail of the caudate nucleus
- superior colliculus
- jugular tubercle
- hypoglossal canal
- inferior colliculus
- cerebral aqueduct (of Sylvius)
- middle cerebellar peduncle
- jugular fossa
- splenium of the corpus callosum
- choroid plexus
- superficial cortical vein
- internal cerebral vein
- quadrigeminal cistern
- medulla
- fourth ventricle
- jugular foramen
- vertebral artery
- trigone (atrium) of the lateral ventricle
- nodule of the cerebellum
- cervical spinal cord
- forceps major
- sigmoid sinus
- foramen of Magendie
- lateral cerebellomedullary cistern (cisterna magna)
- great cerebral vein (of Galen)
- superior cerebellar vermis
- cerebellar tonsil
- mastoid air cells
- sternocleidomastoid muscle
- horizontal fissure of the cerebellum
- occipital horn of the lateral ventricle
- tentorium cerebelli
- transverse sinus
- straight sinus
- falx cerebelli
- internal occipital crest
- trapezius muscle
- torcula herophili (confluence of the sinuses)
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The same normal brain CT without labels for reference.
Case Discussion
The labeled structures are (excluding the correct side):
- frontal crest
- frontal sinus
- falx cerebri
- orbital gyrus
- straight gyrus (gyrus rectus)
- median longitudinal fissure
- crista galli
- inferior oblique muscle
- olfactory fossa
- globe
- superior rectus muscle
- inferior rectus muscle
- lateral rectus muscle
- temporalis muscle
- medial rectus muscle
- forceps minor
- orbital segment of the optic nerve
- genu of the corpus callosum
- superior sagittal sinus
- frontal horn of the lateral ventricle
- orbital apex
- superior orbital fissure
- optic canal
- inferior orbital fissure
- septum pellucidum
- head of the caudate nucleus
- cisternal segment of the optic nerve
- lesser wing of the sphenoid bone
- column of the fornix
- sylvian fissure
- optic chiasm
- clinoid segment of the internal carotid artery
- lentiform nucleus
- optic tract
- M1 segment of the middle cerebral artery
- anterior clinoid process
- body of the corpus callosum
- internal capsule
- body of the fornix
- posterior clinoid process
- body of the caudate nucleus
- mammillary bodies
- Meckel's cave
- body of the lateral ventricle
- third ventricle
- cavernous sinus
- sylvian fissure
- temporal horn of the lateral ventricle
- centrum semiovale
- basilar artery
- carotid canal
- external capsule
- cingulate gyrus
- crura of the fornix
- operculum
- insular cortex
- cerebral peduncle (crus)
- pineal gland
- midbrain
- pons
- cingulate sulcus
- tail of the caudate nucleus
- superior colliculus
- jugular tubercle
- hypoglossal canal
- inferior colliculus
- cerebral aqueduct (of Sylvius)
- middle cerebellar peduncle
- jugular fossa
- splenium of the corpus callosum
- choroid plexus
- superficial cortical vein
- internal cerebral vein
- quadrigeminal cistern
- medulla
- fourth ventricle
- jugular foramen
- vertebral artery
- trigone (atrium) of the lateral ventricle
- nodule of the cerebellum
- cervical spinal cord
- forceps major
- sigmoid sinus
- foramen of Magendie
- lateral cerebellomedullary cistern (cisterna magna)
- great cerebral vein (of Galen)
- superior cerebellar vermis
- cerebellar tonsil
- mastoid air cells
- sternocleidomastoid muscle
- horizontal fissure of the cerebellum
- occipital horn of the lateral ventricle
- tentorium cerebelli
- transverse sinus
- straight sinus
- falx cerebelli
- internal occipital crest
- trapezius muscle
- torcula herophili (confluence of the sinuses)