Question 1

Where does the CR exit for the optional PA axial projection of the mandible?

Accepted Answer

A)   Junction of the lips
B)   Nasion
C)   Mentum
D)   AcanthionE) A) and B)
F) None of the above

Question 2

Match each radiographic appearance with the corresponding pathologic indication.(Use each selection only once.) 
-Excessive bone formation generally involving both the middle and inner ear

Accepted Answer

A)  Otosclerosis
B)  Acoustic neuroma
C)  Cholesteatoma
D)  MastoiditisE) All of the above
F) A) and D)

Question 3

The pituitary gland (hypophysis cerebri) is associated with and protected by the ____ bone.

Accepted Answer

A)   temporal
B)   ethmoid
C)   palatine
D)   sphenoidE) A) and B)
F) A) and D)

Question 4

The frontal bone articulates with ____ cranial bones.

Accepted Answer

A)   four
B)   six
C)   two
D)   fiveE) A) and C)
F) A) and B)

Question 5

Where are the ethmoid sinuses located within the ethmoid bone?

Accepted Answer

A)   Perpendicular plate
B)   Pterygoid processes
C)   Cribriform plate
D)   Lateral massesE) A) and D)
F) All of the above

Question 6

Which cranial bone contains the foramen ovale?

Accepted Answer

A)   Sphenoid
B)   Occipital
C)   Ethmoid
D)   TemporalE) B) and C)
F) None of the above

Question 7

The mastoid air cells communicate with the:

Accepted Answer

A)   inner ear.
B)   middle ear.
C)   external ear.
D)   base of the brain.E) A) and B)
F) All of the above

Question 8

How much difference is there between the OML and IOML positioning lines?

Accepted Answer

A)   7° to 8°
B)   8° to 9°
C)   10° to 11°
D)   5° to 6°E) A) and D)
F) All of the above

Question 9

Which of the following terms describes the junction of the two nasal bones?

Accepted Answer

A)   Nasion
B)   Acanthion
C)   Glabella
D)   Supraorbital grooveE) A) and B)
F) A) and C)

Question 10

Along with the use of erect positions,what other technical factor is important to demonstrate air/fluid levels in paranasal sinuses?

Accepted Answer

A)   Use of medium kV
B)   Horizontal x-ray beam
C)   Use of IR without a grid
D)   Small focal spotE) None of the above
F) A) and B)

Question 11

An average-shaped skull with a 47° angle between the petrous pyramids and the midsagittal plane is classified as:

Accepted Answer

A)   mesocephalic.
B)   brachycephalic.
C)   dolichocephalic.
D)   morphocephalic.E) None of the above
F) B) and C)

Question 12

Part 9 is part of which bone?

Accepted Answer

A)   Zygomatic
B)   Maxilla
C)   Sphenoid
D)   EthmoidE) C) and D)
F) All of the above

Question 13

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

Accepted Answer

A)   Outer canthus
B)   Acanthion
C)   Midway between the glabella and the EAM
D)   Zygoma, midway between the EAM and the outer canthusE) A) and B)
F) B) and D)

Question 14

The part labeled i is the:

Accepted Answer

A)   external acoustic meatus.
B)   tegmen tympani.
C)   auditory tube.
D)   tympanic membrane.E) A) and D)
F) C) and D)

Question 15

Which of the following terms describes the anterior fontanel found in the adult skull?

Accepted Answer

A)   Bregma
B)   Pterion
C)   Asterion
D)   LambdaE) A) and B)
F) All of the above

Question 16

How much skull rotation (from a lateral position) is required to place the ramus parallel to the IR for the axiolateral oblique projection of the mandible?

Accepted Answer

A)   None; the skull should be kept in a lateral position.
B)   30°
C)   45°
D)   53°E) None of the above
F) B) and C)

Question 17

A radiograph of a parietoacanthial (Waters) projection reveals that the petrous ridges are superimposed over the lower 30% of the maxillary sinuses.What specific positioning error (if any) led to this radiographic finding?

Accepted Answer

A)   Insufficient extension
B)   Excessive extension
C)   Excessive CR angulation
D)   No error exists; accept the initial radiograph.E) None of the above
F) C) and D)

Question 18

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?

Accepted Answer

A)   Submentovertex, parietoacanthial, and bilateral tangential superoinferior projections
B)   Parietoacanthial, parieto-orbital, and lateral facial bone projections
C)   Modified parietoacanthial, 15° PA Caldwell, and lateral facial bone projections
D)   Submentovertex, bilateral oblique inferosuperior (tangential) , and AP axial projectionsE) A) and D)
F) None of the above

Question 19

Which positioning line is parallel to the IR for the oblique inferosuperior (tangential) projection of the zygomatic arches?

Accepted Answer

A)   Midsagittal plane
B)   Infraorbitomeatal
C)   Orbitomeatal
D)   GlabelloalveolarE) None of the above
F) C) and D)

Question 20

MATCHING
Select the imaging modality that would best demonstrate the following pathologies.
-Early detection of metastases

Accepted Answer

A)  Nuclear medicine
B)  MRI
C)  CT
D)  Ultrasound
E)  Conventional radiographyF) A) and B)
G) A) and C)

Exam 11: Cranium, Facial Bones, and Paranasal Sinuses

The pituitary gland (hypophysis cerebri) is associated with and protected by the ____ bone.

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

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Part 9 is part of which bone?

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The mastoid air cells communicate with the:

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A radiograph of a parietoacanthial (Waters) projection reveals that the petrous ridges are superimposed over the lower 30% of the maxillary sinuses.What specific positioning error (if any) led to this radiographic finding?

Correct AnswerverifiedShow Answer

How much skull rotation (from a lateral position) is required to place the ramus parallel to the IR for the axiolateral oblique projection of the mandible?

Correct AnswerverifiedShow Answer

Which positioning line is parallel to the IR for the oblique inferosuperior (tangential) projection of the zygomatic arches?

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An average-shaped skull with a 47° angle between the petrous pyramids and the midsagittal plane is classified as:

Correct AnswerverifiedShow Answer

Along with the use of erect positions,what other technical factor is important to demonstrate air/fluid levels in paranasal sinuses?

Correct AnswerverifiedShow Answer

The part labeled i is the:

Correct AnswerverifiedShow Answer

Match each radiographic appearance with the corresponding pathologic indication.(Use each selection only once.) -Excessive bone formation generally involving both the middle and inner ear

Correct AnswerverifiedShow Answer

Which of the following terms describes the junction of the two nasal bones?

Correct AnswerverifiedShow Answer

Which cranial bone contains the foramen ovale?

Correct AnswerverifiedShow Answer

Where are the ethmoid sinuses located within the ethmoid bone?

Correct AnswerverifiedShow Answer

The frontal bone articulates with ____ cranial bones.

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Which of the following terms describes the anterior fontanel found in the adult skull?

Correct AnswerverifiedShow Answer

Where does the CR exit for the optional PA axial projection of the mandible?

Correct AnswerverifiedShow Answer

MATCHING Select the imaging modality that would best demonstrate the following pathologies. -Early detection of metastases

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How much difference is there between the OML and IOML positioning lines?

Correct AnswerverifiedShow Answer

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