The document discusses the systematic approach to CT scans of the brain, highlighting its vital role in diagnosing conditions such as intracranial bleeds, skull fractures, and structural anomalies. It explains the various CT scan planes and brain anatomy, including the four lobes and ventricular system, as well as types of hemorrhages such as epidural, subdural, subarachnoid, intraparenchymal, and intraventricular. Additionally, it details the characteristics of each type of hemorrhage as observed in CT imaging.

1. A SYSTEMATIC APPROCH TO
CT SCAN BRAIN
DR IQRA MUSTAFA
PGR RADIOLOGY

2. Uses of CT scan brain
 Extremely useful diagnostic tool used in A & E and
inpatients.
 To differentiate intracranial bleed from infarct.
 To assess skull fractures.
 Structural anomalies and infections.

3.  Unit of CT scan is Hounsfield (HU)
 It has different value in different structures.

4. PLANES OF CT BRAIN
 Axial
 Sagittal
 coronal

5. Skull sutures

6. Normal CT Brain

7. LOBES OF BRAIN
 04 LOBES
Frontal lobe
Temporal lobe
Parietal lobe
Occipital lobe

8. Central sulcus divides frontal lobe from parietal
lobe superiorly and frontal lobe from temporal
lobe inferiorly.


9. Ventricular system
 Lateral ventricle (frontal horn,body, temporal
and occiput horns)
 Third ventricle
 4th ventricle.

10. Fourth ventricle
Third ventricle

11. Basal Ganglia

12. Types of Hemorrhages
 Epidural hematoma
 Subdural hematoma
 Subarachnoid hematoma
 Intraparenchymal hematoma
 Intraventricular hematoma

13. Epidural Hematoma
 Bleed under skull and dura mater
 Most commonly occur after trauma
 Due to the rupture of middle meningeal artery
 Appears as hyperdense biconvex or lens shaped on CT

14. Subdural Hematoma
 Bleed under duramater and arachnoid mater
 Occurs in elderly patients or alcoholics due to rupture of bridging veins
 Appears as concave or hyperdense extra axial or crescent shaped on CT

16. Intraparenchymal and Intraventricular
bleed.

17. Subarachnoid hemorrhage