Question 1

To determine the allowable combination of exposures factors, thus preventing x-ray tube damage,

Accepted Answer

A)  a tube rating chart is referenced after exposure to check correctness.
B)  the automatic exposure circuit is activated.
C)  an x-ray tube rating chart is checked prior to exposure.
D)  an anode cooling chart is referenced prior to exposure.

Question 2

How many heat units are generated by three (3) exposures of 100 kVp, 400 mA, and 0.01 second using a high frequency generator?

Accepted Answer

The answer of How many heat units are generated by...

Question 3

Which of the following would affect the production of a thermionic cloud?

Accepted Answer

A)  filament diameter
B)  filament length
C)  filament temperature
D)  all of the above

Question 4

Why is a vacuum created in the x-ray tube?

Accepted Answer

The removal of air permits ele...

Question 5

The rotor is located ____ the stator and ____ the envelope.

Accepted Answer

A)  inside; inside
B)  inside; outside
C)  outside; outside
D)  outside; inside

Question 6

When radiographing a wedge-shaped anatomical structure such as the femur, the thicker portion of the anatomy should be positioned

Accepted Answer

A)  under the cathode end of the tube.
B)  in the exact center of the beam. as it is most intense in the center.
C)  off center laterally to negate the heel effect.
D)  under the anode side of the tube.

Question 7

The exact point on the anode where the x-ray beam emanates is the

Accepted Answer

A)  focusing cup.
B)  focal spot.
C)  stator.
D)  rotor. B

Question 8

As the angle of the anode increases and the incident electron beam size remains the same, the effective focal spot size

Accepted Answer

A)  increases.
B)  decreases.
C)  remains the same.
D)  cannot be determined.

Question 9

The only portion of the anode assembly placed outside the vacuum of the envelope is the

Accepted Answer

A)  stator.
B)  rotor.
C)  rotating disc.
D)  molybdenum neck.

Question 10

What type of radiation is composed of photons not produced at the actual focal spot?

Accepted Answer

A)  off-focus
B)  extrafocal
C)  both a and b
D)  primary

Question 11

List two other names for the anode target.

Accepted Answer

target, focus, focal...

Question 12

X-ray photon production occurs at the

Accepted Answer

A)  anode.
B)  cathode.
C)  filament.
D)  stator.

Question 13

The focusing cup has a/an ____ charge.

Accepted Answer

A)  neutral
B)  atomic
C)  positive
D)  negative D

Question 14

The problem of off-focus radiation

Accepted Answer

A)  is particularly important with digital detectors.
B)  distorts the digital histogram.
C)  may result in suboptimum digital images.
D)  all of the above D

Question 15

The area of the focal spot that is projected out of the tube toward the object being radiographed is the

Accepted Answer

A)  effective focal spot.
B)  line focus.
C)  actual focal spot.
D)  x-ray tube long axis.

Question 16

All of the following are related except one.Select the one that is NOT RELATED.

Accepted Answer

A)  a source of electrons
B)  a vacuum
C)  thermionic emission
D)  a large potential difference

Question 17

How many heat units are generated by an exposure of 70 kVp, 400 mA, and 0.1 second on a 3$\phi$  rectified unit?

Accepted Answer

The answer of How many heat units are generated by...

Question 18

Driving the thermionic cloud from the cathode to the anode requires

Accepted Answer

A)  a grid biased anode.
B)  a small voltage.
C)  a large amperage.
D)  a small amperage.

Question 19

All of the following are preferred cathode filament materials EXCEPT

Accepted Answer

A)  copper.
B)  tungsten.
C)  rhenium.
D)  molybdenum.

Question 20

How many heat units are generated by an exposure of 70 kVp, 300 mA, and 0.1 second on a 1$\phi$ rectified unit?

Accepted Answer

The answer of How many heat units are generated by...

Exam 6: The X-Ray Tube

To determine the allowable combination of exposures factors, thus preventing x-ray tube damage,

Correct AnswerverifiedShow Answer

How many heat units are generated by three (3) exposures of 100 kVp, 400 mA, and 0.01 second using a high frequency generator?

Correct AnswerverifiedShow Answer

Which of the following would affect the production of a thermionic cloud?

Correct AnswerverifiedShow Answer

Why is a vacuum created in the x-ray tube?

Correct AnswerverifiedThe removal of air permits ele...View AnswerShow Answer

The rotor is located ____ the stator and ____ the envelope.

Correct AnswerverifiedShow Answer

When radiographing a wedge-shaped anatomical structure such as the femur, the thicker portion of the anatomy should be positioned

Correct AnswerverifiedShow Answer

The exact point on the anode where the x-ray beam emanates is the

Correct AnswerverifiedB

As the angle of the anode increases and the incident electron beam size remains the same, the effective focal spot size

Correct AnswerverifiedShow Answer

The only portion of the anode assembly placed outside the vacuum of the envelope is the

Correct AnswerverifiedShow Answer

What type of radiation is composed of photons not produced at the actual focal spot?

Correct AnswerverifiedShow Answer

List two other names for the anode target.

Correct Answerverifiedtarget, focus, focal...View AnswerShow Answer

X-ray photon production occurs at the

Correct AnswerverifiedShow Answer

The focusing cup has a/an ____ charge.

Correct AnswerverifiedD

The problem of off-focus radiation

Correct AnswerverifiedD

The area of the focal spot that is projected out of the tube toward the object being radiographed is the

Correct AnswerverifiedShow Answer

All of the following are related except one.Select the one that is NOT RELATED.

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How many heat units are generated by an exposure of 70 kVp, 400 mA, and 0.1 second on a 3 ϕ\phiϕ rectified unit?

Correct AnswerverifiedShow Answer

Driving the thermionic cloud from the cathode to the anode requires

Correct AnswerverifiedShow Answer

All of the following are preferred cathode filament materials EXCEPT

Correct AnswerverifiedShow Answer

How many heat units are generated by an exposure of 70 kVp, 300 mA, and 0.1 second on a 1 ϕ\phiϕ rectified unit?

Correct AnswerverifiedShow Answer

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The removal of air permits ele...
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The rotor is located the stator and the envelope.

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B

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target, focus, focal...
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D

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D

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How many heat units are generated by an exposure of 70 kVp, 400 mA, and 0.1 second on a 3 $\phi$ rectified unit?

Correct Answer
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How many heat units are generated by an exposure of 70 kVp, 300 mA, and 0.1 second on a 1 $\phi$ rectified unit?

Correct Answer
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