1. Central Nervous System Sun Yat-sen Memorial Hosp.

2. Normal

3. Normal Head CT: Brain Window F, 62yr

4. Normal Head CT: Bone Window

5. Normal Head CT: Brain Window (left) & Bone Window (right)

6. Normal Head MRI: T2WI

7. Normal Head MRI: T1WI

8. Normal Head MRI T1WI T1WI +C

9. Normal Head MRI: T2-FLAIR ANTERIOR POSTERIOR

10. Normal Head MRI: T1WI +C COR SAG

11. Normal Head MRA TRA COR SAG

12. Normal Head MRI of 1y/o Baby T2WI T1WI T1WI+C T2-FLAIR T1WI-SAG

13. Infarction

14. F, 84y/o Multiple old infarction on right parietal lobe, temporal lobe and occipital lobe Atrophy of brain parenchyma

15. M, 75y/o Acute infarction on right parietal lobe, temporal lobe and frontal lobe

16. M, 51y/o Infarction of bilateral occipital lobe with hemorrhage

17. MRI of the same patient T2WI T1WI T1WI+C T2-FLAIR DWI

18. MRA of the same patient Pre contrast Post contrast

19. M, 55y/o Multiple infarction of left basal ganglia and corona radiata

20. MRI of the same patient T2WI T1WI T1WI+C T2-FLAIR

21. M ， 80 y/o Acute Infarction of right parietal and temporal lobe T2WI T1WI T2-FLAIR

22. MRA of the same patient Sclerosis of cerebral artery and interruption of right middle cerebral artery

23. Hemorrhage

24. M ， 63 y/o 1 、 cerebral hemorrhage of right frontal and temporal lobe 2 、 right subdural hemorrhage 3 、 subarachnoid hemorrhage

26. F, 56 y/o Subarachnoid hemorrhage

27. F, 78 y/o Acute Subdural hemorrhage on the left

28. MRI of the same patient 1 month later. Subacute subdural hemorrhage T2WI T1WI T2-FLAIR

29. Acute Epidural hemorrhage

30. Acute Epidural hemorrhage

31. Trauma

33. M, 1y/o with trauma. CT: Brain window: normal Bone window: right parietal bone fracture (obvious on coronary view)

34. M, 11y/o after trauma. CT: Left temporal bone fracture with intracranial gas.

36. M, 23y/o after trauma CT shows bilateral subdural hemorrhage, no fracture is found on bone window

37. M, 6 y/o after trauma CT shows epidural hemorrhage on the right, no fracture is found on bone window

38. F, 76 y/o after trauma CT shows brain contusion on right frontal lobe, hemorrhage at right frontal lobe and left parietal lobe with subdural hemorrhage on the right, no fracture is found on bone window

39. Tumors

40. Astrocytoma —MRI T2WI T1WI+C T1WI FLAIR

41. M, 44y, Astrocytoma —MRI T2WI T1WI+C T1WI T1WI+C

42. T2WI T1WI+C FLAIR T1WI M, 40y, Astrocytoma — MRI

43. meningeoma —CT 平扫 +C

44. Meningeoma —MRI T1WI T1WI+C T2WI T1WI+C

45. Meningeoma —CT 、 MRI T1WI T1WI+C CT T2WI

46. Meningeoma —MRI T1WI T2WI T1WI+C T1WI+C T1WI+C FLAIR

47. M ， 44y ， lung cancer brain metastasis--CT

48. M ， 65y ， lung cancer brain metastasis—MRI T2WI T1WI+C T1WI T1WI+C

49. M ， 61y ， NPC metastasis—MRI T2WI T1WI+C T1WI FLAIR

50. F, 50Y , acoustic nerve tumor —MRI B-TFE T1WI+C T1WI B-TFE

51. F, 38Y, acoustic nerve tumor—MRI T1WI T2WI T1WI+C T1WI+C