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Basic reading computed tomography (ct) of brain

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Basic reading computed tomography (ct) of brain

  1. 1. Basic Reading Computed Tomography ( CT ) of Brain By…Ext. วรปรัชญ์ สามารถ
  2. 2. Systemic Approach to Head CT Interpretation <ul><li>Symmetry – Compare left and right side of the cranium </li></ul><ul><li>Midline – Look for midline shift </li></ul><ul><li>Cross-sectional anatomy – Review anatomical landmark for each slide </li></ul><ul><ul><li>Brain tissue : gray matter, white matter , intracerebral lesions </li></ul></ul><ul><ul><li>CSF space : ventricle, basal cistern, cortical sulci, fissure </li></ul></ul><ul><ul><li>Skull and soft tissue : scalp swelling, fractures, sinuses, orbit </li></ul></ul><ul><li>Subdural windows : Look for blood collection adjacent to the skull </li></ul><ul><li>Bone windows : Skull, orbit and sinuses, intracranial air </li></ul>
  3. 3. Lateral View of Brain
  4. 4. Ventricular System
  5. 5. Cross-sectional Anatomy <ul><li>Grey/White interface, Subcortical white matter </li></ul>
  6. 6. Cross-sectional Anatomy <ul><li>Paired of crescent-shape = Twin bananas </li></ul>
  7. 7. Cross-sectional Anatomy
  8. 8. Basal ganglia
  9. 9. Cross-sectional Anatomy <ul><li>Third ventricle, Basal ganglia, Superior cerebellar cistern </li></ul>
  10. 10. Hydrocephalous
  11. 11. Physiologic Calcification
  12. 12. Brain Anatomy
  13. 13. Cross-sectional Anatomy <ul><li>Third ventricle, Smiley face </li></ul>
  14. 14. Cross-sectional Anatomy <ul><li>Midbrain, Interpeduncular cistern </li></ul>
  15. 15. Cross-sectional Anatomy <ul><li>Star shape ~ Circle of Willis, </li></ul><ul><li>Fourth ventricle, Temporal horn ~ slit </li></ul>
  16. 16. Subarachnoid hemorrhage
  17. 17. Cross-sectional Anatomy <ul><li>Base of skull, Midline bony prominence, </li></ul><ul><li>Prepontine cistern, Pretrous bone, Frontal sinus </li></ul>
  18. 18. Cross-sectional Anatomy <ul><li>Orbits , Ethmoid air cell </li></ul>
  19. 20. The End…
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