Facial Bones

Question 1

Parietoacanthial view (Waters); OML is ___ degrees to IR

Answer 1

37

Question 1

CR centering for lateral facial bones

Answer 1

Zygoma, midway between outer canthus and EAM

Question 2

Parietoacanthial view (Waters); ____ is perpendicular to IR

Answer 2

MML

Question 3

Parietoacanthial view (Waters); CR exits at:

Answer 3

the acanthion

Question 4

_____ below maxillary sinuses on Waters view

Answer 4

Petrous ridges

Question 5

OML ___ degrees to IR for modified Waters

Answer 5

55

Question 6

Modified parietoacanthial view (Waters); ____ is perpendicular to IR

Answer 6

LML

Question 7

___ perpendicular to IR for PA axial (Caldwell)

Answer 7

OML

Question 8

CR ___ degrees ___ for PA axial (Caldwell)

Answer 8

15; caudal

Question 9

Reverse Caldwell: CR is __ degrees ____

Answer 9

15; cephalic

Question 10

CR 15 degrees cephalic to OML

Answer 10

AP Axial (reverse Caldwell)

Question 11

Routine projections for nasal bones

Answer 11

Both laterals, Waters

Question 12

CR centering for lateral nasal bones

Answer 12

1/2 inch inferior to nasion

Question 13

Tangential nasal bones: center CR to ____ and angle as needed to ensure that it is parallel to ____.

Answer 13

Nasion; GAL

Question 14

Routine projections for zygomatic arches

Answer 14

SMV, oblique inferosuperior, AP axial (modified Townes)

Question 15

Rhese method: head rotated ___ degrees toward side of interest

Answer 15

37

Question 16

CR centering for Rhese method

Answer 16

midpoint of downside orbit

Question 17

Rotate head ___ degrees toward IR for axiolateral/oblique mandible for BODY

Answer 17

30

Question 18

Rotate head ___ degrees toward IR for axiolateral/oblique mandible for SYMPHYSIS

Answer 18

45

Question 19

Rotate head ___ degrees toward IR for axiolateral/oblique mandible for General Survey

Answer 19

10-15

Question 20

CR angle/head tilt to equal ___ degrees for axiolateral/oblique mandible

Answer 20

25

Question 21

How many facial bones make up the bony orbit?

Answer 21

4

Question 22

What primary type of joint movement occurs with the temporomandibular joint?

Answer 22

Bicondylar

Question 23

The posterior aspect of the orbit is termed the

Answer 23

Apex

Question 24

Which sinus often produces an air/fluid level indicating a basilar skull fracture?

Answer 24

Sphenoid

Question 25

Where is the CR centered for a lateral projection of the facial bones?

Answer 25

Zygoma, midway between EAM and outer canthus

Question 26

Which of the following technical factors do NOT apply to lateral nasal bone projections?

the technologist should not use AEC

the technologist should use a small focal spot

the technologist should use low to medium kVp

all of the above apply

Answer 26

all of the above apply

Question 27

Which projection best demonstrates the floor of the orbits with minimal distortion?

Answer 27

Modified waters

Question 28

Why is the chin extended for an axiolateral projection of the mandible?

Answer 28

to prevent superimposition of the cervical spine

Question 29

A patient enters the ED with a possible fracture of the right zygomatic arch. Which of the following routines would best diagnose a possible fracture of this structure?

Answer 29

Submentovertical, oblique inferosuperior (tangential), and AP axial (Towne method) projections

Question 30

A patient enters the ED with a possible nasal bone fracture. The physician is concerned about a possible bony nasal septum deviation and fractured nasal bones. Which of the following routines would best diagnose these injuries?

Answer 30

Parietoacanthial, lateral nasal bone, and superoinferior (axial) projections

Question 31

The Rhese is referred to as a three-point landing. The three points are the:

Answer 31

chin, cheek and nose

Question 32

The patient is positioned with the IOML perpendicular to the IR. The CR is angled 37 degrees caudal and enters 2.5” superior to the glabella. What projection of the skull is being imaged?

Answer 32

AP axial

Question 33

The respiration phase for all projections of the skull is

Answer 33

Suspended

Question 34

What is the angle between the OML and the plane of the image receptor for the parietoacanthial projection for facial bones?

Answer 34

37 degrees

Question 35

What is the name of the articulation between the frontal bone and the parietal bone?

Answer 35

Coronal suture

Question 36

What is the name of the articulation between the parietal bones?

Answer 36

Sagittal suture

Question 37

Which skull projection best demonstrates the occipital bone?

Answer 37

AP axial