CBCT Anatomy

Question 1

What can be seen in the following image?

Answer 1

Nasal cavity- paranasal sinuses

Question 2

_____ drains through maxillary infundibulum into middle meatus via maxillary ostium

Answer 2

maxillary sinus

Question 3

The maxillary sinus drains through the _____ into the middle meatus via the maxillary ostium

Answer 3

maxillary infundibulum

Question 4

The maxillary sinus drains through the maxillary infundibulum into the _____ via the _____

Answer 4

middle meatus; maxillary ostium

Question 5

Paranasal sinus drainage:

Posterior ethmoid air cells drain to the:

Answer 5

superior meatus

Question 6

Paranasal sinus drainage:

_____ cells drain to the superior meatus

Answer 6

posterior ethmoid air cells

Question 7

Paranasal sinus drainage:

The sphenoid sinus drains into the _____ through the ______

Answer 7

superior meatus; sphenoethmoidal recess

Question 8

Paranasal sinus drainage:

______ drains into the superior meatus through the sphenoethmoidal recess

Answer 8

Sphenoid sinus

Question 9

Paranasal sinus drainage:

The frontal sinus drains into the _____ through the ____

Answer 9

middle meatus; frontal recess

Question 10

Paranasal sinus drainage:

The ____ drains into the middle meatus through the frontal recess

Answer 10

frontal sinus

Question 11

Paranasal sinus drainage:

____ drain mostly to the ethmoid bulla

Answer 11

anterior ethmoid air cells

Question 12

Paranasal sinus drainage:

anterior ethmoid air cells drain mostly to the:

Answer 12

ethmoid bulla

Question 13

Large ethmoid air cell positioned at the superior aspect of OMU, immediately superior to hiatus semilunaris:

Answer 13

Ethmoid bulla

Question 14

Ethmoid bulla are large ethmoid air cells positioned at the superior aspect of the OMU, immediately superior to:

Answer 14

hiatus semilunaris

Question 15

Label the following image:

What is this image of?

Answer 15

(Left top to bottom)
Ethmoid bulla
Infundibulum
Uncinate process
Right maxillary sinus

(Right top to bottom)
Hiatus semilunaris
Middle meatus

Osteomeatal complex

Question 16

Comprised of ethmoid air cells, sphenoid sinuses, frontal sinuses & maxillary sinuses:

Answer 16

paranasal sinuses

Question 17

Comprised of nasal bones, nasal meatus, septum, inferior concha, middle concha, superior concha & maxillary ostium:

Answer 17

Nasal cavity

Question 18

Comprised of the hard palate, maxillary tuberosity, nasopalatine canal & anterior nasal spine:

Answer 18

Maxilla

Question 19

Comprised of the condyle, coronoid process, sigmoid notch, ramus, mandibular foramen, inferior alveolar canal, mental foramen & lingual foramina:

Answer 19

Mandible

Question 20

Comprised of mastoid air cells, external/internal auditory meatus, ossicles, mandibular ossa, articular eminence & styloid process:

Answer 20

temporal bone

Question 21

Comprised of the sella turcica, superior/inferior orbital fissure, optic canal, pterygoid plates, & foramen rotundum:

Answer 21

Sphenoid bone

Question 22

what are the soft tissue elements that can be seen in CBCT:

Answer 22

Soft palate, tongue, epiglottis, earlobe & airway

Question 23

Label the following image:

Answer 23

Green- frontal sinus
Blue- ethmoid sinus
Pink- nasal cavity
Purple- maxillary sinus

Question 24

Label the following image:

Answer 24

Green- frontal sinus
Blue- ethmoid sinus
Pink- sphenoid sinus
Purple- maxillary sinus
Diffuse pink area towards nose- nasal cavity
Diffuse pink area posterior- pharynx

Question 25

label the following image:

Answer 25

a- superior orbital fissure b- optic canal c- inferior orbital tissue

Question 26

label the following image:

Answer 26

a- sella turcica b- sphenoid sinus

Question 27

label the following image:

Answer 27

a- superior concha b- orbit c- maxillary simnus d- inferior concha e- middle concha f- maxillary ostium

Question 28

label the following image:

Answer 28

a- articular eminence b- styloid process c- external auditory meatus

Question 29

label the following image:

Answer 29

a- coronoid process b- articular eminence c- glenoid fossa (mandibular fossa) d- condyle e- external auditory meatus f- mastoid air cells

Question 30

What is this image showing?

Answer 30

External auditory meatus & ossicles

Question 31

Label the following image:

Answer 31

a- auricle b- external acoustic meatus c- mastoid air cells

Question 32

Label the following image: Sphenoid bone anterior view

Answer 32

a- dorsum sellae b- superior orbital fissue c- sphenoid sinus d- pterygoid plates

Question 33

Label the following image: Sphenoid bone sagittal view

Answer 33

a- sella turcica b- dorm sellae c- sphenoid sinus d- pterygoid plates

Question 34

Label the following image: Sphenoid bone superior view

Answer 34

a- sella turcica b- optic canal c- superior orbital fissure d- dorsum sellae e- sphenoid bone

Question 35

Label the following image:

Answer 35

a- Axial view of the base of the skull b- zygomatic arch c- foramen magnum d- occipital bone

Question 36

Label the following image:

Answer 36

a- sagittal view of cervical spine b- occipital bone c- foramen magnum d- occipital bone

Question 37

Label the following orthogonal & describe

Answer 37

Yellow: axial (superior to inferior) Green: sagittal (right to left) Purple: coronal (nateiro to posterior)

Question 38

Label the following image: What view is this?

Answer 38

Axial view A- frontal sinuses B- frontal bone

Question 39

Label the following image: What view is this?

Answer 39

axial view (READ LIKE BOOK) 1. right orbit 2. frontal sinuses 3. left orbit