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Exam 11: Cranium, Facial Bones, and Paranasal Sinuses

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Question 61

Multiple Choice

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A radiograph of a PA Caldwell projection reveals that the petrous ridges are projected into the lower one third of the maxillary sinuses.Which of the following modifications should be made during the repeat exposure to produce a more diagnostic image?

A) Increase the extension of the head and neck.
B) Decrease the extension of the head and neck.
C) Nothing; accept the initial radiograph.
D) Angle the CR 10° caudad.

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

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Question 62

Multiple Choice

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Which term describes the small flap of cartilage covering the opening to the ear?

A) Tragus
B) Pinna
C) Acanthion
D) EAM

E) A) and B)
F) A) and C)

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Question 63

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Which one of the following positioning errors most often results in a repeat exposure of a cranial position?

Which cranial bone contains the cribriform plate?

The sutural point or area labeled d is termed: (Anatomic structures are labeled i through vi and sutures a through h.)

A radiograph of a lateral cranium reveals that the mentum was cut off from the bottom of the radiograph.A 24 *30-cm (10 *12-inch) IR was used,and it was placed crosswise.What must be altered if a repeat exposure is performed?

Which one of the following technical considerations is most critical for demonstrating air and/or fluid levels within the cranium?

Which three cranial bones articulate directly with the zygomatic bone?

A patient comes to radiology with severe mastoiditis.Which one of the following imaging modalities will best demonstrate possible bony destruction within the mastoid region?

A patient comes to radiology for a sinus series on a cart.She is unable to stand or sit erect for any of the projections.Which of the following projections will best detect any air/fluid levels present in the maxillary sinuses?

Why is the chin extended for an axiolateral oblique projection of the mandible?

Which of the following terms describes the small irregular bones occasionally found in the sutures?

The lateral projection of the facial bones is typically a unilateral projection.

For a lateral facial bones projection,the chin should be adjusted so the IOML is perpendicular to the front edge of the IR.

How many facial bones help make up the bony orbit?

Which cranial suture is labeled g? (Anatomic structures are labeled i through vi and sutures a through h.)

Which bony landmark represents the highest level of the facial bone mass?

Match each of the following radiographic appearances with the corresponding pathologic indication.(Use each selection only once.) -Destructive stage of bony areas demonstrated by areas of radiolucency followed by reparative stages of sclerotic (radiodense) regions resulting in a "cotton-wool" appearance

The PA axial projection (Haas method)for the cranium requires a CR angle of 25° caudad.

Which sinuses are best demonstrated with a parietoacanthial projection?