Question 1

A radiograph of a parieto-orbital oblique projection for the optic foramen reveals that the optic foramen is projected into the maxillary sinus.Which of the following modifications is necessary to produce a more diagnostic image?

Accepted Answer

A)  Decrease the extension of the head and neck.
B)  Increase the extension of the head and neck.
C)  Increase the CR angulation.
D)  Decrease the CR angulation.E) B) and C)
F) B) and D)

Question 2

Match each radiographic appearance with the corresponding pathologic indication.(Use each selection only once.)

-Bone destruction most commonly involving middle ear

Accepted Answer

A)  Otosclerosis
B)  Acoustic neuroma
C)  Cholesteatoma
D)  MastoiditisE) A) and B)
F) B) and C)

Question 3

The left mastoid fontanel becomes the ____ in an adult.

Accepted Answer

A)  left asterion
B)  left pterion
C)  left bregma
D)  squamosal sutureE) A) and D)
F) All of the above

Question 4

Part 7 is part of which bone?

Accepted Answer

A)  Ethmoid
B)  Lacrimal
C)  Zygomatic
D)  SphenoidE) A) and B)
F) A) and C)

Question 5

Which of the fontanels is the last to close at about 18 months of age?

Accepted Answer

A)  Sphenoid
B)  Mastoid
C)  Anterior
D)  PosteriorE) None of the above
F) All of the above

Question 6

Which positioning line should be perpendicular to the plane of the IR for the AP axial (Towne)  projection with a 37° caudad CR angle?

Accepted Answer

A)  OML
B)  IOML
C)  AML
D)  LMLE) All of the above
F) B) and C)

Question 7

What is the largest immovable bone of the face?

Accepted Answer

A)  Vomer
B)  Mandible
C)  Maxilla
D)  ZygomaticE) B) and C)
F) C) and D)

Question 8

Which of the following sutures separates the parietal from the occipital bone?

Accepted Answer

A)  Squamosal
B)  Sagittal
C)  Coronal
D)  LambdoidalE) A) and D)
F) A) and C)

Question 9

How many facial bones help make up the bony orbit?

Accepted Answer

A)  Three
B)  Four
C)  Five
D)  SevenE) B) and C)
F) None of the above

Question 10

A radiograph of a PA projection of the sinuses reveals that the petrous ridges are projected over the ethmoid sinuses.Which of the following modifications will eliminate this superimposition while not compromising diagnostic quality of the study?

Accepted Answer

A)  Increase extension of the head and neck slightly.
B)  Angle the CR 5° to 10° caudad.
C)  Increase flexion of the head and neck slightly.
D)  Have the patient open his mouth.E) A) and B)
F) All of the above

Question 11

The lateral projection for the nasal bones is generally a unilateral projection.(Both right and left lateral projections are usually not required.)

Accepted Answer

A) True 
 B)False

Question 12

A PA axial projection with a 25° caudad angle of the cranium reveals that the petrous ridges are at the level of the superior orbital margins.Which of the following modifications are required to correct this error?

Accepted Answer

A)  Decrease CR angle.
B)  Increase extension of cranium.
C)  Increase flexion of cranium.
D)  No corrections are required; this is an acceptable position.E) B) and C)
F) A) and B)

Question 13

Select the imaging modality that would best demonstrate the following pathologies.
-Craniosynostosis (premature suture closing in neonate skull)

Accepted Answer

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

Question 14

Lesions of decreased density are termed osteoblastic lesions.

Accepted Answer

A) True 
 B)False

Question 15

Which aspect of the mandible is best demonstrated with an AP axial projection?

Accepted Answer

A)  Body
B)  Mentum
C)  Ramus
D)  Condyloid processE) A) and B)
F) A) and C)

Question 16

The widest portion of the cranium is found at the level of the:

Accepted Answer

A)  parietal tubercles.
B)  right and left pterion.
C)  squamous portion of the temporal bone.
D)  external acoustic meatus (EAM) .E) None of the above
F) A) and B)

Question 17

The oval window is labeled:

Accepted Answer

A)  vi.
B)  ix.
C)  vii.
D)  i.
E)  v.F) A) and C)
G) A) and B)

Question 18

A radiograph of a submentovertex projection of the cranium reveals that the mandibular mentum are projected into the ethmoid sinuses.What must be altered during the repeat exposure to produce a more diagnostic radiograph?

Accepted Answer

A)  Increase the extension of the skull.
B)  Increase the flexion of the skull.
C)  Decrease the CR angulation.
D)  None of the above; it is an acceptable image.E) B) and C)
F) A) and B)

Question 19

What CR angle is required for the AP axial projection for the temporomandibular joints (TMJs)  with the IOML perpendicular to the image receptor?

Accepted Answer

A)  30°
B)  37°
C)  25°
D)  42°E) None of the above
F) B) and C)

Question 20

How many bones make up the facial bone region?

Accepted Answer

A)  6
B)  8
C)  12
D)  14E) A) and D)
F) None of the above

Exam 11: Cranium, Facial Bones, and Paranasal Sinuses

Which positioning line should be perpendicular to the plane of the IR for the AP axial (Towne) projection with a 37° caudad CR angle?

Correct AnswerverifiedShow Answer

Which of the fontanels is the last to close at about 18 months of age?

Correct AnswerverifiedShow Answer

The left mastoid fontanel becomes the ____ in an adult.

Correct AnswerverifiedShow Answer

A PA axial projection with a 25° caudad angle of the cranium reveals that the petrous ridges are at the level of the superior orbital margins.Which of the following modifications are required to correct this error?

Correct AnswerverifiedShow Answer

A radiograph of a parieto-orbital oblique projection for the optic foramen reveals that the optic foramen is projected into the maxillary sinus.Which of the following modifications is necessary to produce a more diagnostic image?

Correct AnswerverifiedShow Answer

How many bones make up the facial bone region?

Correct AnswerverifiedShow Answer

The widest portion of the cranium is found at the level of the:

Correct AnswerverifiedShow Answer

What CR angle is required for the AP axial projection for the temporomandibular joints (TMJs) with the IOML perpendicular to the image receptor?

Correct AnswerverifiedShow Answer

A radiograph of a PA projection of the sinuses reveals that the petrous ridges are projected over the ethmoid sinuses.Which of the following modifications will eliminate this superimposition while not compromising diagnostic quality of the study?

Correct AnswerverifiedShow Answer

The lateral projection for the nasal bones is generally a unilateral projection.(Both right and left lateral projections are usually not required.)

Correct AnswerverifiedShow Answer

Which aspect of the mandible is best demonstrated with an AP axial projection?

Correct AnswerverifiedShow Answer

Which of the following sutures separates the parietal from the occipital bone?

Correct AnswerverifiedShow Answer

How many facial bones help make up the bony orbit?

Correct AnswerverifiedShow Answer

What is the largest immovable bone of the face?

Correct AnswerverifiedShow Answer

Match each radiographic appearance with the corresponding pathologic indication.(Use each selection only once.) -Bone destruction most commonly involving middle ear

Correct AnswerverifiedShow Answer

The oval window is labeled:

Correct AnswerverifiedShow Answer

A radiograph of a submentovertex projection of the cranium reveals that the mandibular mentum are projected into the ethmoid sinuses.What must be altered during the repeat exposure to produce a more diagnostic radiograph?

Correct AnswerverifiedShow Answer

Lesions of decreased density are termed osteoblastic lesions.

Correct AnswerverifiedShow Answer

Select the imaging modality that would best demonstrate the following pathologies. -Craniosynostosis (premature suture closing in neonate skull)

Correct AnswerverifiedShow Answer

Part 7 is part of which bone?

Correct AnswerverifiedShow Answer

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