Imaging Anatomy of the Paranasal Sinuses

Anatomy of the paranasal sinuses on imaging. In this video we'll explore the anatomy of the paranasal sinuses on CT. A good understanding of paranasal sinus anatomy is imperative to understand imaging patterns in rhinosinusitis. Imaging anatomy is complicated by the presence of many anatomical variants. A good understanding of paranasal sinus anatomy is needed to detect predisposing factors for the development of (chronic) sinusitis and to identify possible surgical risks. This presentation was made by dr. Simon Nicolay (UZ Antwerp, Belgium) and dr. Sven Dekeyzer (UZ Ghent, Belgium).
0:00 - Introduction + topics
1:26 - General sinonasal anatomy
3:50 - The nasal cavity
6:29 - The nasal septum
9:05 - Function of the nasal cavity
10:54 - The nasal turbinates
14:42 - The nasal meatus
15:35 - Function of the paranasal sinuses
18:41 - Drainage pathways of the paranasal sinuses
19:34 - The spheno-ethmoidal recess
21:48 - The frontal recess
22:46 - The ethmoid bulla
23:44 - The (ethmoidal) infundibulum
24:07 - The ostiomeatal complex
26:08 - The nasolacrimal system
27:31 - The infra-orbital canal and supra-orbital notch
28:19 - The anterior and posterior superior alveolar canals
29:19 - Anatomic variants
30:21 - Nasal cavity variants
30:37 - Septal deviation
33:32 - Septal defect
35:09 - Concha bullosa
37:12 - Paradoxical middle turbinate
38:24 - Olfactory Fossa
39:30 - Keros classification
42:14 - Sphenoid sinus variants
43:02 - Sphenoid sinus pneumatization
44:22 - Sphenoid skull base pneumatization
47:15 - Vidian canal protrusion / dehiscence
48:18 - Optic nerve and carotid canal protrusion / dehiscence
49:41 - Sinus septum insertion on the carotid canal
51:27 - Ehtmoid cell variants
51:58 - Ethmoid bulla
53:08 - Agger-Nasi cell
53:45 - Frontal recess cells
55:14 - Haller cells
56:18 - Supra-orbital air cells
1:00:20 - Onodi cells
1:03:40 - Lamina papyracea
1:04:17 - Adherent uncinate process
1:05:24 - Key Messages
1:06:24 - Anatomic variants that (might) narrow the sinonasal outflow tracts
1:06:54 - Anatomic variants that (might) pose surgical risks
1:10:07 - References and word of thanks to dr. Simon Nicolay
This video is brought to you by the neuroradiologist:
/ theneuroradguy
/ the_neurora. .
theneuroradiologist.org/
#radiology #neuroradiology #neurology #medicalstudent #neuroradiologist #theneuroradiologist #otorhinolaryngology #anatomy #MRI #medical #sinuses

[@darja546]

And this is for free? Really? It's absolutely amazing! Thank you so much!

[@Amita-vh1oo]

Thank you so much !! So many confusions cleared !! ❤❤❤

[@ebbamarie]

Thank you so much, this is extremely helpful!! 👏

[@MrSatur0s]

Thanks for sharing your knowledge, I appreciate it so much.

[@janpaolopagkatipunan4058]

Thank you for this wonderful video!

[@huskaarka2567]

That was great.
Please upload more of radiological anatomy contents. As first year resident you are my savior

[@syedzaman1148]

excellent, super excellent. best lecture that i have gone through my entire radiology carrier on pns

[@MrQwarckDracker]

i love how you explain things! so easy to comprehend

[@stashunko]

"some people do have a lot of air in their head"... that would be me before a head and neck anatomy test. Great video as usual!

[@KTAS1912]

Thank you for another amazing video!

[@rushiljainhi]

Beautifully depicted. Great video. Eagerly awaiting the pathologies video.

[@luiza.mitrea-sireteanu]

Amazing explanations! Thank you so much! Everything is clear now 👍

[@majdbarko3242]

Thanks 🙏

[@professorx3060]

I needed to make a presentation on neuroradiology and found such a gem of a channel. Thank you for posting these lectures! I've learned so much, and also want to become a radiologist myself 😅

[@theneuroradiologist]

Glad to have made you enthusiast about radiology, best of luck to you!

[@surendrayadav3332]

Very nice 👌 Thanks 🙏

[@SayaMohammed-cs6cw]

Thank you! This was really informative 👍👍

[@hameedaklan2212]

Very helpful ,excellent

[@baybars_0]

brilliant video, as are the others you uploaded!

[@youssefamin3179]

Can you please make a video about top 10 most frequently missed lesions on brain MRI

[@alaaasaad6686]

Please do one on CT brain anatomy

[@ebbamarie]

Thank you so much!! This is a wonderful presentation. I have one question: Do you use a structured report for paranasal sinus CT?

[@theneuroradiologist]

Yes I do as matter of fact :)

[@ebbamarie]

Thank you for your answer. Would it be possible for you to share the template?

[@theneuroradiologist]

@@ebbamarie It's not perfect, but this is how I do it (sometimes I change it a little but it gives you an idea)
Inflammatory changes (if present):
Maxillary sinuses:
Frontal sinuses:
Ethmoid air celles:
Sphenoid sinuses:
(report mucosal thickening, frotty change, fluid-levels, hyperostosis etc...)
Ostiomeatal complex:
Frontal recesses:
Spheno-ethmoid recesses:
Anatomical variants:
Olfactory fossa: (Keros type ... )
Lamina papyracea: (report if infact / Haller cells / adherent uncinate process)
Onodi cells: present / absent
Sphenoid pneumatization: (type; also mention dehiscent carotid canal, optic strut, vidian canal, sphenoid septum insertion..)
Ethmoid notich: (supra-orbital pneumatization above ethmoid notch yes or no)
Nasal septum: (deviation / bony spur?)
Nasal concha: (concha bullosa, paradoxical turn, hypoplasia etc...)
CONCLUSION:
Sinusitis yes or no (if possible suggest acute or chronic, but not always possible, only reliable signs are fluid-levels for acute disease and bony sinus wall hyperostosis for chronic sinusitis). Report pattern if present (infundibular, OMC, etc...)
Report predisposing factors if present.
Report surgical risks if presents.

[@mahdou5097]

❤

[@Stinosko]

🎉

[@blij4167]

Which software/ application do you use to do this presentation?

[@theneuroradiologist]

Just PowerPoint, and then I use Zoom te make the recording

[@user-hw2bk2ke3i]

Thanks 🙏