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Radiology procedure > Facial/sinuse/orbits/manible > Flashcards

Facial/sinuse/orbits/manible Flashcards

1
Q

The the MML is perp. to the plane of the IR, the OML should be _____ degrees from the plane of the IR.

A

37 degrees

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2
Q

The Union of the two bodies of the mandible meets at a midline called?

A

Symphysis menti

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3
Q

The CR should be perp to which facial line when performing a SMV view for SINUSES

A

IOML

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4
Q

Which position of the sinuses will demonstrate ALL of the paranasal sinuses?

A

Lateral

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5
Q

Tripod fracture involves which facial bone and its separation from three other bones ?

A

Zygoma bone

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6
Q

Which view of the sinuses will put the petrous ridge BELOW the level of the maxillary sinus floor?

A

Waters

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7
Q

Parietoacanthial projection is also known as?

A

The Waters view

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8
Q

This bony structure must be positioned inferior to the maxillary sinus floor on a correct parietoacanthial projection. What structure is this?

A

Petrous ridge

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9
Q

What is the CR for lateral facial bone?

A

Midway between outer canthus and EAM

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10
Q

When performing a WATERs position for sinuses, and you have the patient open their mouth, what can be visualized?

A

Sphenoid sinus

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11
Q

Which two bony structures form the bony nasal septum?

A

The perpendicular plate of the ethmoid and the vomer

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12
Q

What are the four sinus sets?

A 
Frontal sinus (cranial bone) 
Ethmoid sinus (cranial bone) 
Sphenoid sinus (cranial bone) 
Maxillary sinus (facial bone)
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13
Q

Your patient requires a sinus series but cannot be placed into an erect position. Which position is done to show air/fluid level without erecting the patient?

A

Cross table lateral

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14
Q

Which position will demonstrate the sphenoid sinus without interference from other bones? (More than one)

A

Lateral
Open mouth waters
SMV

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15
Q

Which facial bone makes up the outer, lower (lateral and inferior) portion of the external orbital rim?

A

Zygoma bone

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16
Q

What’s the difference between a routine Waters and a Modified Waters

A

Routine Waters, MML is perp.
Modified waters, LML is perp. Also in modified, the orbital floor is perp to the IR, which provide less distortion of the orbital rim.

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17
Q

Which facial bone form the posterior one fourth of the hard palate?

A

Palatine bone

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18
Q

Which position will demonstrate the Jugged Handles for a possible depressed fracture?

A

SMV

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19
Q

kVp for almost all mandible views?

A

75-85kVp

20
Q

How many facial bones are there?

A

14 all together (some are paired that’s why)

21
Q

List the facial bones

A 
Maxillary (2)               Inferior nasal conchae (2)
Zygomatic (2).           Vomer (1)
Lacrimal (2).               Mandible (1)
Nasal (2)
Palatine (2)
22
Q

Which facial bone is the largest immovable bone of the face?

A

The two maxillae (aka maxillary bones) rt and left

23
Q

Which facial bone so the largest?

A

Mandible

24
Q

What supports the teeth?

A

The alveolar processes

25
Q

Typo of joint that holds the teeth in the alveolar processes?

A

Fibrous synarthrodial (Gomphosis)

26
Q

The Caldwell of the sinuses demonstrates this sinus best.

A

Frontal sinus

27
Q

The superior and middle nasal conchae belongs to which bone

A

Ethmoid bone

28
Q

Anteriorly, the nasal septum is cartilaginous and is termed?

A

Septal cartilage

29
Q

What is the meaning behind the name of the Vomer bone?

A

Vomer means “plowshare”

30
Q

A severe deviated nasal septum can cause what difficulty?

A

A severe deviated nasal septum can block nasal passageway and make breathing difficult through the nose

31
Q

What is the largest MOVEABLE bone in the head?

A

Mandible

32
Q

The angle of the mandible is also known as?

A

Gonion

33
Q

Area anterior to the gonion of the body is termed?

A

Ramus

34
Q

The area superior to the gonion is termed ?

A

The body

35
Q

TMJ is the only moveable joint of the head. What is its classification?

A

It’s a bicondylar joint that hinge and glides (diarthrodial)

36
Q

What forms the TMJ

A

The condyle head of the condyloid process fits into the Temporalmandibular (TM) fossa of the temporal bone to form the TMJ

37
Q

Location to the TMJ?

A

Anterior and slight superior to the EAM

38
Q

What happens to the condyle when the mouth is open?

A

The condyle moves forward to the front edge of the fossa

39
Q

At birth, are all the paranasal sinuses present?

A

No. At birth, only the maxillary sinus is developed. Everything else comes after age 6

40
Q

Which paranasal sinus develops last?

A

The ethmoid sinus

41
Q

An older term for maxillary sinus

A

Antrum

42
Q

The PA Caldwell best demonstrate which sinus

A

Best demonstrate the frontal sinus best but also a little maxillary sinus

43
Q

The lateral position best demonstrate which sinus

A

The lateral demonstrate ALL sinuses

44
Q

The open mouth waters best demonstrate which sinus

A

Best for maxillary but also everyone else. But best is maxillary

45
Q

The SMV best demonstrate which sinus

A

Best demonstrate the ethmoid and sphenoid sinuses

46
Q

If routine waters is done, and MML is used, how many degrees off the plane is the OML? Where are the petrous ridge located at?

A

Routine waters = MML used, OML is 37 degrees off the plane and the petrous ridge is below the maxillary floor

47
Q

If modified waters is done, and LML is used, how many degrees off the plane is the OML? Where are the petrous ridge located at?

A

Modified waters = LML used. OML is 55 degrees off the plane and the petrous ridge is at the lower third

Radiology procedure (8 decks)

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