Question 1

MATCHING
Select the imaging modality that would best demonstrate the following pathologies.
-Hydrocephalus (in neonate)

Accepted Answer

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

Question 2

The bone labeled 2 is the:

Accepted Answer

A)   lacrimal.
B)   maxilla.
C)   ethmoid.
D)   palatine.E) A) and C)
F) A) and B)

Question 3

A radiograph of an axiolateral oblique projection of the mandible with the head in a lateral position reveals that the mandibular body is greatly foreshortened.Which of the following modifications is necessary to produce a more diagnostic image?

Accepted Answer

A)   Increase the rotation of skull toward the image receptor.
B)   Decrease the rotation of skull toward the image receptor.
C)   Decrease the CR angulation.
D)   Increase the CR angulation.E) C) and D)
F) None of the above

Question 4

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) A) and B)
F) All of the above

Question 5

Which positioning line must be used with a 30° caudad angle for an AP axial projection of zygomatic arches?

Accepted Answer

A)   IOML
B)   AML
C)   OML
D)   GALE) None of the above
F) A) and C)

Question 6

To which aspect of the ear does the eustachian tube attach?

Accepted Answer

A)   External ear
B)   Middle ear
C)   Inner ear
D)   CochleaE) None of the above
F) A) and B)

Question 7

MATCHING
Select the imaging modality that would best demonstrate the following pathologies.
-Intracranial hemorrhage in premature infants

Accepted Answer

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

Question 8

Which projection best demonstrates the floor of the orbits?

Accepted Answer

A)   Parietoacanthial (Waters) 
B)   Modified parietoacanthial (modified Waters) 
C)   PA axial (Caldwell) 
D)   Lateral facial bonesE) A) and B)
F) A) and C)

Question 9

Which bony structure is labeled v?

(Anatomic structures are labeled i through vi and sutures a through h.)

Accepted Answer

A)   EAM
B)   Mastoid process
C)   Styloid process
D)   Zygomatic processE) A) and B)
F) A) and C)

Question 10

What is the angle between the midsagittal plane and the IR for a parieto-orbital oblique projection of the optic foramen?

Accepted Answer

A)   45°
B)   12°
C)   30°
D)   53°E) C) and D)
F) A) and B)

Question 11

Which of the following projections of the mandible results in the highest skin dose?

Accepted Answer

A)   Axiolateral oblique
B)   Submentovertex
C)   PA axial
D)   AP axialE) B) and C)
F) C) and D)

Question 12

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) A) and B)
F) None of the above

Question 13

Where does the CR exit for a modified parietoacanthial (modified Waters) projection of the facial bones?

Accepted Answer

A)   Nasion
B)   Glabella
C)   Acanthion
D)   MidorbitsE) A) and D)
F) All of the above

Question 14

Which group of sinuses is shaded (screened) in the frontal and lateral views of the illustration below?

Accepted Answer

A)   Maxillary
B)   Sphenoid
C)   Ethmoid
D)   FrontalE) B) and D)
F) B) and C)

Question 15

Which sinus is projected through the oral cavity with a parietoacanthial transoral projection?

Accepted Answer

A)   Ethmoid
B)   Maxillary
C)   Sphenoid
D)   FrontalE) A) and D)
F) C) and D)

Question 16

Which of the following structures of the inner ear is responsible for hearing?

Accepted Answer

A)   Vestibule
B)   Semicircular canals
C)   Cochlea
D)   Round windowE) A) and B)
F) A) and C)

Question 17

A radiograph of an anteroposterior (AP) axial projection of the cranium reveals that the dorsum sellae is projected below the foramen magnum,but the posterior arch of C1 is visible within the foramen.Which of the following positioning errors led to this radiographic outcome?

Accepted Answer

A)   Excessive central ray (CR)  angulation
B)   Insufficient CR angulation
C)   Insufficient flexion of the head and neck
D)   Tilt of the skullE) B) and D)
F) A) and C)

Question 18

Where is the CR centered for an AP axial projection for the mandible?

Accepted Answer

A)   At the nasion
B)   2 inches (5 cm)  above glabella
C)   At the glabella
D)   At the mentumE) A) and D)
F) A) and C)

Question 19

The ____ passageway drains the maxillary sinus into the middle nasal conchae.

Accepted Answer

A)   ethmoid bulla
B)   infundibulum
C)   uncinate process
D)   inferior nasal conchaE) B) and D)
F) A) and C)

Question 20

The sensory apparatus of both equilibrium and hearing are contained in the internal ear.

Accepted Answer

A) True 
 B)False

Exam 11: Cranium, Facial Bones, and Paranasal Sinuses

Which group of sinuses is shaded (screened) in the frontal and lateral views of the illustration below?

Correct AnswerverifiedShow Answer

Where does the CR exit for a modified parietoacanthial (modified Waters) projection of the facial bones?

Correct AnswerverifiedShow Answer

The bone labeled 2 is the:

Correct AnswerverifiedShow Answer

Which projection best demonstrates the floor of the orbits?

Correct AnswerverifiedShow Answer

MATCHING Select the imaging modality that would best demonstrate the following pathologies. -Intracranial hemorrhage in premature infants

Correct AnswerverifiedShow Answer

The sensory apparatus of both equilibrium and hearing are contained in the internal ear.

Correct AnswerverifiedShow Answer

Which of the following structures of the inner ear is responsible for hearing?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which positioning line must be used with a 30° caudad angle for an AP axial projection of zygomatic arches?

Correct AnswerverifiedShow Answer

MATCHING Select the imaging modality that would best demonstrate the following pathologies. -Hydrocephalus (in neonate)

Correct AnswerverifiedShow Answer

To which aspect of the ear does the eustachian tube attach?

Correct AnswerverifiedShow Answer

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 bony structure is labeled v? (Anatomic structures are labeled i through vi and sutures a through h.)

Correct AnswerverifiedShow Answer

Which of the following projections of the mandible results in the highest skin dose?

Correct AnswerverifiedShow Answer

Which sinus is projected through the oral cavity with a parietoacanthial transoral projection?

Correct AnswerverifiedShow Answer

A radiograph of an anteroposterior (AP) axial projection of the cranium reveals that the dorsum sellae is projected below the foramen magnum,but the posterior arch of C1 is visible within the foramen.Which of the following positioning errors led to this radiographic outcome?

Correct AnswerverifiedShow Answer

The ____ passageway drains the maxillary sinus into the middle nasal conchae.

Correct AnswerverifiedShow Answer

What is the angle between the midsagittal plane and the IR for a parieto-orbital oblique projection of the optic foramen?

Correct AnswerverifiedShow Answer

Where is the CR centered for an AP axial projection for the mandible?

Correct AnswerverifiedShow Answer

A radiograph of an axiolateral oblique projection of the mandible with the head in a lateral position reveals that the mandibular body is greatly foreshortened.Which of the following modifications is necessary to produce a more diagnostic image?

Correct AnswerverifiedShow Answer

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