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Radiology courses > Facial Bones test > Flashcards

Facial Bones test Flashcards

1
Q

Several methods are available to perform the axiolateral oblique projection of the mandible to demonstrate the symphysis, body, or ramus. What is the central ray angulation for all of these projections

A

25 degrees cephalad

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2
Q

For the Waters method for the facial bones, the orbitomeatal line is placed at what angle to the IR

A

37 degrees

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3
Q

All of the following are clearly demonstrated on the parientoacanthial projection (Waters method) facial bones

A

Orbits

Zygomatic arches

Maxillae

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4
Q

For the tangential projection of the zygomatic arch, the top of the head is tilted how many degrees

A

15 degrees away from the affected side examined

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5
Q

What is the central ray angulation for the AP axial projection of the TMJ

A

35 degrees caudad

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6
Q

How many bones make up the face

A

14

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7
Q

Which line is placed parallel with the transverse axis of the IR for the axiolateral oblique projection of the TMJ

A

Acantiomeatal

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8
Q

Which two facial bones form the roof of the mouth

A

Palatine bones

Maxillae

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9
Q

How many bones compose the bony orbit

A

7

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10
Q

How is the head positioned to demonstrate the symphysis of the mandible in the axiolateral oblique projection

A

45 degrees towards the IR

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11
Q

For the submentovertical projection of the zygomatic arches, the central ray is directed perpendicular to the ____line

A

Infraorbitomeatal

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12
Q

The parietoacanthial projection of the facial bones is commonly called the

A

Waters

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13
Q

Which facial bone contains a foramen through which the tear duct passes

A

Lacrimal

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14
Q

For the tangential projection of the zygomatic arch, the central ray is directed perpendicular to the ____line

A

Infraorbitomeatal

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15
Q

What is the central ray angulation for the AP axial projection of the zygomatic arches if OML is used as the positioning baseline

A

30 degrees caudad

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16
Q

The midsagittal plane of the head is rotated how many degrees for the axiolateral oblique projection of the TMJ

A

15 degrees towards the IR

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17
Q

Which line is placed perpendicular to the plane of the image receptor for the AP axial projection of the zygomatic arches

A

Orbitomeatal line

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18
Q

Which of the following is placed perpendicular to the front edge of the IR for a lateral projection of the facial bones

A

Infraorbitomeatal line

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19
Q

The parietoacanthial projection Waters method of the facial bones is often modified so that there is less angulation of the facial bones. For this modification, the orbitomeatal line is adjusted to ____degrees

A

55 degrees

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20
Q

Which two parts of the patients face touch the table for a PA axial projection Caldwell method

A

Nose

Forehead

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21
Q

The central ray angulation for the reverse waters method when OML is properly positioned is

A

0 degrees

22
Q

Which of the following projections best demonstrates the condyle and neck of the mandible

A

Axiolateral oblique

23
Q

The largest and most dense bone of the face is the

A

Mandible

24
Q

The lateral projection of the facial bones clearly demonstrates

A

All the facial bones in their entirety

25
Q

The small bone situated at the base of the tongue is the

A

Hyoid

26
Q

Both zygomatic arches can be demonstrated on one projection for which projections

A

SMV

AP Axial

27
Q

What is the central ray angulation for the PA axial projection of the mandibular rami

A

20 to 25 degrees cephalad

28
Q

The opening into the apex of the orbit for the transmission of the optic nerve and ophthalmic artery is called the

A

Optic foramen

29
Q

Which of the following lines is placed perpendicular to the plane of the image receptor for the AP axial projection of the TMJ articulation

A

Orbitomeatal line

30
Q

The zygomatic arches are a part of which bone

A

Temporal

31
Q

Which of the following lines is placed as nearly parallel to the image receptor as possible for the SMV projection of the zygomatic arches

A

IOML

32
Q

Which of the following is true regarding positioning for the Waters method for the facial bones

A

The orbitomeatal line forms a 37 degree angle with the plane of the IR

The midsagittal plane is perpendicular to the IR plane

33
Q

Which of the following is true regarding the lateral projection of the nasal bones

A

MSP is parallel with the tabletop

Both sides are done for comparison

The Interpupillary line is perpendicular to the tabletop

34
Q

For a lateral projection of the facial bones, the central ray will enter

A

Halfway between the outer canthus and the EAM

35
Q

Which two of the following projections will clearly demonstrate any medial or lateral displacement of fractures of the mandibular rami

A

PA

PA axial

36
Q

What is the central ray angulation for the axiolateral oblique projection of the TMJ

A

15 degrees

37
Q

For a lateral projection of the facial bones, the image receptor is centered to the

A

Zygomatic bone

38
Q

For the tangential projection of the zygomatic arch, the head is positioned so that the midsagittal plane of the skull is ____degrees ____the side being examined

A

15, towards

39
Q

Trauma patients may arrive in the radiology department with their head immobilized. A reverse Waters method can always be performed on these patients by adjusting the central ray parallel to the ____line

A

Mentomeatal

40
Q

Which of the following is centered to the IR for a parietoacanthial projection of the facial bones

A

Acanthion

41
Q

Which reference line is perpendicular to the IR for the PA and PA axial mandibular rami

A

OML

42
Q

Which of the following is placed perpendicular to the image receptor for the acanthoparietal projection Waters method of the facial bones

A

Mentomeatal line

43
Q

Which of the following is centered to the IR for the PA projection of the mandibular rami

A

Tip of the Nose

44
Q

Where does the central ray enter the patient for the AP axial projection of the zygomatic arches

A

1 inch above the nasion

45
Q

The orbits is made up of _____cranial bones and ____facial bones

A

Three, four

46
Q

At which level will the central ray be placed for the SMV projection of the zygomatic arches

A

At a level 1 inch posterior to the outer canthi

47
Q

At which level will the central ray be placed for the tangential projection of the zygomatic arch

A

At a level 1 inch posterior to the outer canthi

48
Q

How is the head positioned to demonstrate the ramus of the mandible in the axiolateral oblique projection

A

True lateral

49
Q

How is the head positioned to demonstrate the body of the mandible in the axiolateral oblique projection

A

30 degrees towards the IR

50
Q

Which part of the patient’s face is touching the upright bucky, or table, for a parietoacanthial projection Waters method

A

Chin

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