interpretation of ct brain neuro surgical prospective n.
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Interpretation of CT Brain- neuro surgical prospective. Dr A Gazdar 04/09/2013. CT. Sliced angled images of brain from skull base to vertex. Either cross sectional (axial) / coronal / sagittal images Radiocontrast used is iodinated : !!!allergy. Normal anatomy. A. Frontal Lobe

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Presentation Transcript
slide2
CT

Sliced angled images of brain from skull base to vertex.

Either cross sectional (axial) / coronal / sagittal images

Radiocontrast used is iodinated : !!!allergy

normal anatomy
Normal anatomy

A. Frontal Lobe

B. Frontal Bone (Superior Surface of Orbital Part)

C. Dorsum Sellae

D. Basilar Artery

E. Temporal Lobe

F. Mastoid Air Cells

G. Cerebellar Hemisphere

slide4

A. Frontal Lobe

B. Sylvian Fissure

C. Temporal Lobe

D. Suprasellar Cistern

E. Midbrain

F. Fourth Ventricle

G. Cerebellar Hemisphere

slide5

A. Falx Cerebri

B. Frontal Lobe

C. Anterior Horn of Lateral Ventricle

D. Third Ventricle

E. Quadrigeminal Plate Cistern

F. Cerebellum

slide6

A. Anterior Horn of the Lateral Ventricle

B. Caudate Nucleus

C. Anterior Limb of the Internal Capsule

D. Putamen and Globus Pallidus

E. Posterior Limb of the Internal Capsule

F. Third Ventricle

G. Quadrigeminal Plate Cistern

H. Cerebellar Vermis

I. Occipital Lobe

slide7

A. Genu of the Corpus Callosum

B. Anterior Horn of the Lateral Ventricle

C. Internal Capsule

D. Thalamus

E. Pineal Gland

F. Choroid Plexus

G. Straight Sinus

slide8

A. Falx Cerebri

B. Frontal Lobe

C. Body of the Lateral Ventricle

D. Splenium of the Corpus Callosum

E. Parietal Lobe

F. Occipital Lobe

G. Superior Sagittal Sinus

slide9

A. Falx Cerebri

B. Sulcus

C. Gyrus

D. Superior Sagittal Sinus

trauma
Trauma

Both brain and bone windows need to be examined

Fractures are noted in sinuses, skull base, mastoid bone, temporal (petrous), skull.

Either linear or depressed.

Either displaced or undisplaced

slide11
SAH

Most commonly associated with vascular anomalies

Aneurysm, AVM

CT grading is Fischer grade

acute sdh
Acute SDH

NSx emergency

Crescent shaped

Hyperdense, may contain hypodense foci due to serum, CSF or active bleeding

Does not cross dural reflections

slide13
EDH

Associated with skull fractures

Hyerdense biconvex

Can cross the dural borders

contusions
contusions

ill-defined hypodense area mixed with foci of hemorrhage.

Adjacent subarachnoid hemorrhage is common.

>24-48 hours, hemorrhagic transformation or coalescence of petechial hemorrhages : evolution

tumors
tumors

Contrast needed to delineate

Multiple at grey white junction– mets

Dural based – meningioma

Diffuse intraparenchymal – high grade gliomas

hydrocephalous
hydrocephalous

Communicating or obstructive

Trapped horns

Look for cause

Associated hardware

intracranial infections
Intracranial infections

Abscess – extra or intra cranial

Extra : look for sinusitis, thrombophlebitis, postop

Intra: look for distant source

nerve wreck
Nerve wreck…..

Describe the lesion…

thank you
Thank you..

Have a great day!!