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بسم الله الرحمن الرحيم

بسم الله الرحمن الرحيم. INVESTIGATION OF CNS Part II. DR HAMDY HASSAN , FRCR ASSISTANT PROFESSOR CONSULTANT RADIOLOGIST KING KHALID UNIVERSITY HOSPITAL. Left parietal fracture. Fracture left inferior orbital wall. Hyperparathyroidism (Salt and pepper). Hyperparathyroidism.

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بسم الله الرحمن الرحيم

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  1. بسم الله الرحمن الرحيم

  2. INVESTIGATION OF CNSPart II DR HAMDY HASSAN , FRCR ASSISTANT PROFESSOR CONSULTANT RADIOLOGIST KING KHALID UNIVERSITY HOSPITAL

  3. Left parietal fracture

  4. Fracture left inferior orbital wall

  5. Hyperparathyroidism (Salt and pepper)

  6. Hyperparathyroidism Brown tumour

  7. Multiple myeloma

  8. Multiple myeloma

  9. Depressed skull fracture Bone window Brain window

  10. Bone window fracture

  11. Bone window Brain window Acute extradural hemorrhage fracture

  12. Acute subarachnoid hemorrhage

  13. Acute intraventricular hemorrhage

  14. Acute intracerebral hemorrhage

  15. Acute ischemic infarction

  16. Acute infarction CT MRI-T2WI MRI-Diffusion MRI-FLAIR

  17. Thrombosis in MCA LEFT MCA INFARCTION

  18. Hyperdense basilar artery

  19. Acute infarction due to basilar artery thrombosis

  20. Diffusion sequence Acute infarction due to basilar artery thrombosis

  21. Old infarction

  22. Old infarction Acute infarction Acute and old infarction

  23. Follow up

  24. Role of Recent Advanced Techniques in Diagnosis of Stroke

  25. Ischemic tissue can be divided into two compartments: 1) The infarct core representing the dead or dying tissue is at the center of the infarction. 2) The zone around the central core may have lost electrical activity, but it has more moderate reductions in blood flow and is defined as the penumbra. With reperfusion this tissue may be salvageable, but without reperfusion it may go on to infarction.

  26. cerebral blood volume cerebral blood flow CT PERFUSION

  27. CT PERFUSION cerebral blood volume cerebral blood flow mean transit time Acute stroke in a 65-year-old man with left hemiparesis. mismatched abnormalities (arrows) that imply the presence of a penumbra. The area with decreased blood volume represents the ischemic core, and that with normal blood volume but decreased blood flow and increased mean transit time is the penumbra.

  28. MR DIFFUSION PERFUSION On the left we first have a diffusion image indicating the area with irreversible changes (dead issue).In the middle there is a large area with hypoperfusion.On the right the diffusion-perfusion mismatch is indicated in blue.This is the tissue at risk.This is the brain tissue that maybe can be saved with therapy.

  29. 2 MR DIFFUSION PERFUSION On the DWI there is a large area with restricted diffusion in the territory of the right MCA.There is a perfect match with the perfusion images, so this patient should not undergo any form of thrombolytic therapy.

  30. Evolution of cerebral infarction with time

  31. Meningioma

  32. Post contrast Meningioma

  33. Glioblastoma

  34. Post contrast Glioblastoma

  35. Brainstem glioma

  36. Normal Pituitary PITUITARY MACROADENOMA

  37. CRANIOPHARYNGIOMA

  38. Multiple sclerosis

  39. THANK YOU DR HAMDY HASSAN

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