Question 1

The radiographer must be skilled at setting the correct size and shape of the focal trough to produce a diagnostic panoramic radiograph.

Accepted Answer

A) True 
 B)False

Question 2

The bite block is used to position the arches correctly in the forward-backward dimension of the focal trough.

Accepted Answer

A) True 
 B)False

Question 3

Positioning the arches too far forward in the focal trough, toward the tube head, will result in:

Accepted Answer

A)   the anterior teeth appearing blurred and diminished in width.
B)   the anterior teeth appearing blurred and magnified.
C)   an image that appears as an exaggerated smile.
D)   wide radiopacities superimposed over the anterior teeth.E) B) and C)
F) A) and C)

Question 4

The technique used to show detailed images of structures located within a predetermined plane of tissue while eliminating or blurring those structures in the planes not selected is called "tomography."

Accepted Answer

A) True 
 B)False

Question 5

If the patient's head is rotated to the right in the focal trough, the teeth on the right appear magnified.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following facial landmark planes must be positioned slightly (5˚)  down toward the floor when positioning the arches within the focal trough?

Accepted Answer

A)   Frankfort
B)   Ala-tragus
C)   Midsagittal
D)   OcclusalE) B) and C)
F) None of the above

Question 7

Positioning the arches too far back in the focal trough, toward the tube head, will result in:

Accepted Answer

A)   the anterior teeth appearing blurred and diminished in width.
B)   the anterior teeth appearing blurred and magnified.
C)   an image that appears as an exaggerated smile.
D)   wide radiopacities superimposed over the anterior teeth.E) A) and D)
F) B) and C)

Question 8

The genial tubercles appear on a panoramic radiograph as a radiopaque, donut-shaped circle surrounding the lingual foramen.

Accepted Answer

A) True 
 B)False

Question 9

Each of the following statements regarding principles of panoramic radiography is correct EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   The patient stands or is seated in a stationary position.
B)   The x-ray beam is directed toward the stationary cassette.
C)   The x-ray tube head moves around the front of the patient.
D)   The radiation beam passes through the patient toward the cassette.E) A) and C)
F) A) and D)

Question 10

What is the name of the anatomic landmark that appears on a panoramic image as a radiopaque, wing-like bony projection of the sphenoid bone located posterior to the maxillary tuberosity?

Accepted Answer

Lateral pt...

Question 11

What is the corrective action for a panoramic image that can mimic caries of the anterior teeth?

Accepted Answer

A)   Have the patient raise his or her tongue to the palate during exposure.
B)   Readjust the patient's head in an upward direction.
C)   Have the patient close his or her lips on the bite block.
D)   Readjust the patient's head in a downward direction.E) All of the above
F) C) and D)

Question 12

What happens to the radiographic image if intensifying screens and film are not in tight contact?

Accepted Answer

The resultant image is blurry....

Question 13

The patient should be instructed to rest the tongue against the palate during the exposure.

Accepted Answer

A) True 
 B)False

Question 14

Which of these statements regarding the focal trough is FALSE?

Accepted Answer

A)   Its shape varies from one manufacturer to another.
B)   It is where structures will be imaged the sharpest.
C)   It is two-dimensional.
D)   It is used to determine where to position the dental arches.E) A) and B)
F) All of the above

Question 15

Which of the following is the correct reason that a cape-style lead barrier without a thyroid collar be used when exposing panoramic radiographs?

Accepted Answer

A)   Due to the position of the PID, the thyroid collar would block the x-rays.
B)   It would be difficult for a standing patient to maintain an apron-style barrier.
C)   This type of lead barrier is less expensive and offsets the cost of the panoramic machine.
D)   Cape-style barriers represent state-of-the-art new technology.E) A) and D)
F) All of the above

Question 16

The greatest limitation of panoramic radiographs is the inability to:

Accepted Answer

A)   locate impacted teeth.
B)   produce image sharpness.
C)   assess growth and development.
D)   detect caries in advanced stages.E) A) and B)
F) C) and D)

Question 17

Each of the following is a patient positioning consideration for producing a quality panoramic radiograph EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   The patient must be in a standing position.
B)   The arches must be positioned within the focal trough.
C)   The midsagittal plane must be perpendicular to the floor.
D)   The patient's lips must be closed around a bite block on a cotton roll.E) All of the above
F) A) and B)

Question 18

What is the name of the anatomic landmark that appears on a panoramic image as a radiolucent ovoid or round opening in the center of the ramus of the mandible?

Accepted Answer

Mandibular foramen. ...

Question 19

Which of the following describes the correct head positioning for a panoramic radiograph?

Accepted Answer

A)   Midsaggital plane parallel to the floor and ala-tragus line perpendicular to the floor
B)   Frankfort plane and midsaggital plane perpendicular to the floor
C)   Ala-tragus line parallel to the floor and Frankfort plane 5 degrees toward the floor
D)   Frankfort plane parallel to the floor and midsaggital plane perpendicular to the floorE) All of the above
F) A) and B)

Question 20

Careful loading of a flexible plastic sleeve cassette must ensure that the film is completely seated within the intensifying screens.

Accepted Answer

A) True 
 B)False

Exam 30: Radiographic Techniques

The genial tubercles appear on a panoramic radiograph as a radiopaque, donut-shaped circle surrounding the lingual foramen.

Correct AnswerverifiedShow Answer

Careful loading of a flexible plastic sleeve cassette must ensure that the film is completely seated within the intensifying screens.

Correct AnswerverifiedShow Answer

The radiographer must be skilled at setting the correct size and shape of the focal trough to produce a diagnostic panoramic radiograph.

Correct AnswerverifiedShow Answer

Which of the following is the correct reason that a cape-style lead barrier without a thyroid collar be used when exposing panoramic radiographs?

Correct AnswerverifiedShow Answer

Which of the following describes the correct head positioning for a panoramic radiograph?

Correct AnswerverifiedShow Answer

The greatest limitation of panoramic radiographs is the inability to:

Correct AnswerverifiedShow Answer

If the patient's head is rotated to the right in the focal trough, the teeth on the right appear magnified.

Correct AnswerverifiedShow Answer

The technique used to show detailed images of structures located within a predetermined plane of tissue while eliminating or blurring those structures in the planes not selected is called "tomography."

Correct AnswerverifiedShow Answer

Positioning the arches too far back in the focal trough, toward the tube head, will result in:

Correct AnswerverifiedShow Answer

What is the corrective action for a panoramic image that can mimic caries of the anterior teeth?

Correct AnswerverifiedShow Answer

Each of the following statements regarding principles of panoramic radiography is correct EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

The bite block is used to position the arches correctly in the forward-backward dimension of the focal trough.

Correct AnswerverifiedShow Answer

What is the name of the anatomic landmark that appears on a panoramic image as a radiopaque, wing-like bony projection of the sphenoid bone located posterior to the maxillary tuberosity?

Correct AnswerverifiedLateral pt...View AnswerShow Answer

Which of these statements regarding the focal trough is FALSE?

Correct AnswerverifiedShow Answer

Each of the following is a patient positioning consideration for producing a quality panoramic radiograph EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

Positioning the arches too far forward in the focal trough, toward the tube head, will result in:

Correct AnswerverifiedShow Answer

The patient should be instructed to rest the tongue against the palate during the exposure.

Correct AnswerverifiedShow Answer

What happens to the radiographic image if intensifying screens and film are not in tight contact?

Correct AnswerverifiedThe resultant image is blurry....View AnswerShow Answer

What is the name of the anatomic landmark that appears on a panoramic image as a radiolucent ovoid or round opening in the center of the ramus of the mandible?

Correct AnswerverifiedMandibular foramen. ...View AnswerShow Answer

Which of the following facial landmark planes must be positioned slightly (5˚) down toward the floor when positioning the arches within the focal trough?

Correct AnswerverifiedShow Answer

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Lateral pt...
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The resultant image is blurry....
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Mandibular foramen. ...
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Correct Answer
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