NDAEB 5.4 Radiation Safety Part 6

Question 1 of 30

Category: 4.Patient Care Procedures

Contact with tube housing should be avoided because?

Large amounts of radiation leak from X-ray tube heads

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Slight amounts of radiation leak from X-ray tube heads

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X-ray tube heads are very hot and can cause burns

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X-ray tube heads are fragile and can be damaged easily

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Question 2 of 30

Category: 4.Patient Care Procedures

Dental assistant who becomes pregnant should?

Assume front desk responsibilities

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Take no special precautions

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Stop processing X-rays

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Notify the employer

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Question 3 of 30

Category: 4.Patient Care Procedures

When exposing a full-mouth set of radiographs?

If gloves are worn, the PID is not covered

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A film dispenser should be used

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Unexposed film should be kept on a counter in the room

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The exposure button should be covered with a plastic barrier

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Question 4 of 30

Category: 4.Patient Care Procedures

Personnel using X-ray equipment should be familiar with the radiography recommendations of which organization?

CDC

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NCRP

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CNSC

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CEPA

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Question 5 of 30

Category: 4.Patient Care Procedures

When properly used, X-ray equipment does NOT?

Leak even slight amounts of radiation

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Require exposure monitoring

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Pose a health risk

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Require routine testing and inspections

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Question 6 of 30

Category: 4.Patient Care Procedures

How much should exposure time be reduced for an edentulous patient?

50 percent

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30 percent

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25 percent

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20 percent

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Question 7 of 30

Category: 4.Patient Care Procedures

Radiation can cause?

Short term effects

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Long term effects

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Both short term and long term effects

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Zero effects

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Question 8 of 30

Category: 4.Patient Care Procedures

An elderly patient has been prescribed two bitewing X-rays and two periapicals. A 12 year old is given the same X-ray prescription, we might expect the older individual to be?

More sensitive to radiation

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Just as sensitive as the 12 year old to radiation

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Significantly more sensitive to radiation

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Less sensitive to radiation

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Question 9 of 30

Category: 4.Patient Care Procedures

A lead apron may be damaged if not properly stored. What are signs of damage?

Tears

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Folds

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Cracks

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All of the above

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Question 10 of 30

Category: 4.Patient Care Procedures

Which of the following is one of several measures used to protect the patient and the technician from ionizing x-radiation?

ALARA

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Standardization

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Blockage

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Collimation

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Question 11 of 30

Category: 4.Patient Care Procedures

The ADA discourages the use of short, closed, pointed plastic cones because?

Decrease scatter radiation

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Increase scatter radiation

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Intensify beams

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Decrease the kilovoltage

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Question 12 of 30

Category: 4.Patient Care Procedures

Which item on a patient\’s health history might present a radiation caution?

Recent back surgery

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Recent bone marrow transplant

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Asthma and allergies

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Sexually Transmitted Disease

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Question 13 of 30

Category: 4.Patient Care Procedures

All of the following factors affect patient exposure to radiation. However, which factor can the dental radiograph operator manipulate to minimize radiation dose while capturing images?

Processing methods

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Beam alignment and patient positioning

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Equipment selection

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Processing environment

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Question 14 of 30

Category: 4.Patient Care Procedures

MPD stands for?

Maximum possible dose

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Maximum permissible dose

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Minimum possible dose

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Minimum permissible dose

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Question 15 of 30

Category: 4.Patient Care Procedures

An example of an unnecessary health risk dental operators can take with radiography is?

Holding the tube head steady while taking an X-ray

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Standing behind a protective barrier

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Using film holders

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Standing out of the path of the primary beam

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Question 16 of 30

Category: 4.Patient Care Procedures

The operator must take into account patient criteria when monitoring occupational exposure. Reduced patient exposure will also affect the operator, in which setting might the operator be exposed to lower levels of radiation. When X-raying?

Small children

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Teenagers

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Young adults

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Older adults

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Question 17 of 30

Category: 4.Patient Care Procedures

Patient shielding equipment should be inspected at least

Every two months

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Once a month

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Once a day

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Every year

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Question 18 of 30

Category: 4.Patient Care Procedures

Under the quality assurance program, which of the following does NOT need to be checked each year with regard to radiography equipment?

kV output

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mA output

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Half value layer

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None of these

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Question 19 of 30

Category: 4.Patient Care Procedures

Noncollimated X-ray beams

Focus on a centralized area

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Do not have dose controls

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Do not emit radiation

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Expose larger areas to radiation

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Question 20 of 30

Category: 4.Patient Care Procedures

Operators should

Make sure they are properly protected before performing any X-ray

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Make sure only the patient is properly protected

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Never wear monitoring devices

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Perform extra X-rays on all patients

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Question 21 of 30

Category: 4.Patient Care Procedures

One rem is equivalent to how many Sievert (the SI unit for dose equivalent)?

1 SV

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10 SV

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0.1 SV

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0.01 SV

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Question 22 of 30

Category: 4.Patient Care Procedures

If a patient is having a panoramic radiograph done

The lead apron will cover both the front and back of their body

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No lead apron is needed

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The lead apron will only cover the patient’s back

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The lead apron will only cover the patient’s front

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Question 23 of 30

Category: 4.Patient Care Procedures

What is the minimal skin to source distance recommended for dental radiographs?

5 cm

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10 cm

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15 cm

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20 cm

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Question 24 of 30

Category: 4.Patient Care Procedures

What is one way to cause unnecessary radiation exposure to the patient?

Conducting radiographs on the first office visit

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Radiograph technique errors

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Leaving the patient in the radiology room while developing films

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Repeating the radiographs on the patient\\\’s next visit

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Question 25 of 30

Category: 4.Patient Care Procedures

Which of the following is the least safe kilovoltage for radiography?

80 kVp

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70 kVp

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60 kVp

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50 kVp

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Question 26 of 30

Category: 4.Patient Care Procedures

To protect themselves, operators should not only wear protection, but also

Know where to stand during an X-ray

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Be familiar with the equipment

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Be educated on radiation

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All of the above

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Question 27 of 30

Category: 4.Patient Care Procedures

The film badge meter is meant to be used how many times?

One

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Three

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Five

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Unlimited times

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Question 28 of 30

Category: 4.Patient Care Procedures

A protective booth is one method of shielding the operator from scatter radiation. With this device, the radiation must do what to reach the technician?

Fizzle out

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Scatter twice

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Scatter once

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Become heated

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Question 29 of 30

Category: 4.Patient Care Procedures

Long term effects of radiation can cause all of the following, except?

Hair loss

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Blindness

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Sterility

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Firmer skin

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Question 30 of 30

Category: 4.Patient Care Procedures

An example of a non stochastic effect of dental radiation is?

Bone cancer

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Hair loss

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Birth defects

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Tumors

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NDAEB 5.4 Radiation Safety Part 6

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