Radiologic anatomy of nose and paranasal sinuses

1. +
Nasal Cavity and
Paranasal Sinuses

2. +
Roadmap
Gross
Introduction Positioning
Anatomy
Radiographic
X Ray CT
Anatomy
MRI Questions

3. +
Introduction

4. +
Introduction
 Nasal cavity is a passage from
the external nose anteriorly to
the nasopharynx posteriorly.
 The frontal, ethmoid, sphenoid
and maxillary sinuses form the
paired paranasal sinuses.
 They are situated around and
drain into the nasal cavity.
 The entire complex is lined by
mucus secreting epithelium.

5. +
Gross
Anatomy

6. +
Nasal Cavity
Nasal Cavity Sagittal View
 Nasal Septum
 Floor of the nasal cavity
 Lateral wall of the cavity

7. +
Nasal Cavity
Lateral Wall Sagittal view
 Maxillary
 Palatine
 Lacrimal
 Ethmoid

8. +
Nasal Cavity
Lateral Wall Sagittal view
 Sphenoethmoidal recess
 Superior Turbinate
 Superior Meatus
 Middle turbinate
 Middle meatus
 Inferior turbinate
 Inferior meatus

9. +
Nasal Cavity
Lateral wall Sagittal view
 Sphenoid >> Spenoethmoidal
recess.
 Posterior group of ethmoid >>
superior meatus.
 Frontal + Ant Ethmoidal +
Maxillary >> middle meatus
 Nasolacrimal duct >> inferior
meatus

10. +
Blood Supply of Nasal Cavity
 Sphenopalatine artery
 Greater palatine artery
 Superior labial branch of facial artery
 Anterior and posterior branches of ophthalmic artery
 Little’s area

11. +
Paranasal Sinuses
 Frontal
 Ethmoid
 Sphenoid
 Maxillary

12. +
Paranasal sinuses
Maxillary sinus Sphenoid sinus

13. +
Positioning

14. +
PA 15 Caldwell
Position Image

15. +
Occipito Mental OM (Waters)
Position Image

16. +
Lateral View
Position Image

17. +
Radiologic
Anatomy

18. +
Plain X-ray

19. +
Nasal Bones

20. +
Nasal Bones &
Septum

21. +
Paranasal sinuses
PA 15 Caldwell

22. +
Paranasal sinuses

23. +
Paranasal sinuses
Lateral View

24. +
CT

25. + Nasal
Maxillary Nasal
Septum
Zygomatic Sinus Concha
Arch Nasopharynx
Nasal Cavity
Axial view
Eustachian
Tube

26. +
Nasal Cavity
Axial view

27. +
Nasal Cavity
Coronal View

28. +
Nasal Cavity
Coronal View
Turbinates

29. +
Nasal Cavity
Coronal View

30. +
Paranasal sinuses
Maxillary Sinus
Coronal View Turbinates

31. +
Paranasal sinuses
Maxillary Sinus
Axial view Turbinates

32. +
Paranasal sinuses
Maxillary Sinus
Coronal View Turbinates

33. +
Paranasal sinuses
Maxillary Sinus
Coronal View Turbinates

34. +
Frontal sinus
Paranasal sinuses
Frontal Sinus

35. +
Paranasal sinuses
Frontal Sinus
Axial view

36. +
Paranasal sinuses
Ethmoid Sinus
Coronal View Turbinates

37. +
Paranasal sinuses
Ethmoid Sinus
Axial view Turbinates

38. +
Paranasal sinuses
Ethmoid Sinus
Axial view Turbinates

39. +
Paranasal sinuses
Ethmoid Sinus
Axial view Turbinates

40. +
Paranasal sinuses
Sphenoid Sinus
Coronal View Turbinates

41. +
Paranasal sinuses
Sphenoid Sinus
Coronal View Turbinates

42. +
Paranasal sinuses
Sphenoid Sinus
Axial view Turbinates

43. +
MRI

44. +
MRI

45. +
Questions ??

46. +