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Exam 11: Cranium, Facial Bones, and Paranasal Sinuses

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Question 31

Multiple Choice

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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?

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) C) and D)

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Question 32

Multiple Choice

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Which cranial bone possesses the zygomatic process?

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

E) B) and C)
F) C) and D)

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Question 33

Multiple Choice

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Which cranial bone is labeled vi in this figure? (Anatomic structures are labeled i through vi and sutures a through h.)

A patient enters the ED with a possible fracture of the proximal ramus of the mandible.Which of the following routines would best diagnose this fracture?

A pediatric patient enters radiology for a paranasal sinus series.Because of her age,the child is unable to hold still for the projections even with the use of immobilization devices.The decision is to hold the child during each exposure.Which of the following individuals should be asked to hold the child?

Which of the following points is NOT true about the oblique inferosuperior (tangential) projection of the zygomatic arches?

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

What is the classification of the joint found between the teeth and maxilla?

Part 10 is part of which bone?

The most common radiographic sign for secondary osteomyelitis of the paranasal sinuses is:

MATCHING Select the imaging modality that would best demonstrate the following pathologies. -Recent bleeding within the brain

Which cranial bone possesses the sella turcica?

A radiograph of a lateral projection of the facial bones reveals that the mandibular rami are not superimposed.What specific positioning error is present on this radiograph?

What CR angle is required for the Schuller method projection of the TMJs?

MATCHING Select the imaging modality that would best demonstrate the following pathologies. -Most sensitive modality for detecting differences between normal and abnormal brain tissues

The cochlea is labeled:

Which plane or perspective is most often produced for a CT scan of the sinuses?

Match each of the following radiographic appearances with the corresponding pathologic indication.(Use each selection only once.) -Radiolucent areas within the bony cranium

Which facial bone forms the majority of the hard palate?

Which positioning line is placed perpendicular to the plane of the IR with a true lateral nasal bone projection?