Question 1

The posterior aspect of the orbit is termed the:

Accepted Answer

A)   apex.
B)   base.
C)   sphenoid strut.
D)   crown. A

Question 2

Which cranial bone possesses the superior nasal conchae?

Accepted Answer

A)   Ethmoid
B)   Sphenoid
C)   Frontal
D)   Temporal A

Question 3

An axiolateral oblique projection (Law method)for the temporomandibular joints on a brachycephalic type of skull would require ____ rotation as compared with an average-shaped skull.

Accepted Answer

A)   more
B)   less
C)   the same
D)   Rotation depends on the patient's age. B

Question 4

A patient comes to radiology for a sinus series.She cannot fully extend her head and neck for the submentovertex projection.What else can the technologist do to produce a diagnostic submentovertex projection?

Accepted Answer

A)   Angle the CR to place it perpendicular to the OML.
B)   Angle the CR to place it perpendicular to IOML.
C)   Perform the projection with the patient recumbent.
D)   Place sandbags on the forehead to extend the skull.

Question 5

What is the only paranasal sinus not contained within a cranial bone?

Accepted Answer

A)   Maxillary
B)   Sphenoid
C)   Ethmoid
D)   Frontal

Question 6

All of the sinuses intercommunicate with each other and with the nasal cavity.

Accepted Answer

A) True 
 B)False

Question 7

The recommended digital systems kV range for the superoinferior tangential projection of the nasal bones is:

Accepted Answer

A)   40 to 50.
B)   50 to 60.
C)   60 to 70.
D)   75 to 85.

Question 8

The submentovertex projection requires that the inferior OML (IOML)is placed parallel to the image receptor.

Accepted Answer

A) True 
 B)False

Question 9

Match each of the following radiographic appearances with the corresponding pathologic indication.(Use each selection only once.)
-Distinctive lesions with moth-eaten appearance,a combination of increased density and destructive irregular border lesions

Accepted Answer

A)  Multiple myeloma
B)  Paget's disease
C)  Metastases
D)  Pituitary adenoma

Question 10

A radiograph of a parietoacanthial (Waters)projection for sinuses reveals that the petrous pyramids are projected over the maxillary sinuses.What positioning error is present on this radiograph?

Accepted Answer

A)   Excessive flexion
B)   Excessive extension
C)   Excessive CR angulation
D)   Rotation of the head

Question 11

What is the position of the skull for an axiolateral projection (Schuller method)of the TMJ?

Accepted Answer

A)   Midsagittal plane at a 53° angle to the image receptor
B)   Skull rotated 15° toward the IR from the lateral position
C)   True lateral position
D)   OML is at a 37° angle to the image receptor

Question 12

What is the maximum CR angulation used for the axiolateral oblique projection of the mandible?

Accepted Answer

A)   10° to 15°
B)   25°
C)   30°
D)   45°

Question 13

The ethmoid notch is part of which cranial bone?

Accepted Answer

A)   Temporal
B)   Ethmoid
C)   Sphenoid
D)   Frontal

Question 14

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)  Mastoiditis

Question 15

Which bone is involved with a tripod fracture?

Accepted Answer

A)   Maxilla
B)   Ethmoid
C)   Temporal
D)   Zygomatic

Question 16

Where is the CR centered for a lateral projection of the sinuses?

Accepted Answer

A)   Upside EAM (side away from image receptor) 
B)   At the level of the nasion
C)   Midway between the acanthion and the EAM
D)   Midway between the outer canthus and the EAM

Question 17

Where is the CR centered for a lateral projection of the cranium?

Accepted Answer

A)   EAM
B)   Three-fourths inch (2 cm)  anterior and 3/4 inch (2 cm)  superior
C)   Two inches (5 cm)  superior to EAM
D)   Midway between EAM and nasion

Question 18

Match each radiographic appearance with the corresponding pathologic indication.(Use each selection only once.)
-Increased densities replace mastoid air cells

Accepted Answer

A)  Otosclerosis
B)  Acoustic neuroma
C)  Cholesteatoma
D)  Mastoiditis

Question 19

Which of the following modalities best demonstrates early signs of Paget's disease of the skull?

Accepted Answer

A)   CT
B)   Nuclear medicine
C)   MRI
D)   Sonography

Question 20

The proper name for the parieto-orbital oblique projection is the Schuller method.

Accepted Answer

A) True 
 B)False

Exam 11: Cranium, Facial Bones, and Paranasal Sinuses

The posterior aspect of the orbit is termed the:

Which cranial bone possesses the superior nasal conchae?

An axiolateral oblique projection (Law method) for the temporomandibular joints on a brachycephalic type of skull would require ____ rotation as compared with an average-shaped skull.

A patient comes to radiology for a sinus series.She cannot fully extend her head and neck for the submentovertex projection.What else can the technologist do to produce a diagnostic submentovertex projection?

What is the only paranasal sinus not contained within a cranial bone?

All of the sinuses intercommunicate with each other and with the nasal cavity.

The recommended digital systems kV range for the superoinferior tangential projection of the nasal bones is:

The submentovertex projection requires that the inferior OML (IOML)is placed parallel to the image receptor.

Match each of the following radiographic appearances with the corresponding pathologic indication.(Use each selection only once.) -Distinctive lesions with moth-eaten appearance,a combination of increased density and destructive irregular border lesions

A radiograph of a parietoacanthial (Waters) projection for sinuses reveals that the petrous pyramids are projected over the maxillary sinuses.What positioning error is present on this radiograph?

What is the position of the skull for an axiolateral projection (Schuller method) of the TMJ?

What is the maximum CR angulation used for the axiolateral oblique projection of the mandible?

The ethmoid notch is part of which cranial bone?

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

Which bone is involved with a tripod fracture?

Where is the CR centered for a lateral projection of the sinuses?

Where is the CR centered for a lateral projection of the cranium?

Match each radiographic appearance with the corresponding pathologic indication.(Use each selection only once.) -Increased densities replace mastoid air cells

Which of the following modalities best demonstrates early signs of Paget's disease of the skull?

The proper name for the parieto-orbital oblique projection is the Schuller method.