Safety radiation multiple choice

The biological effect of radiation is measured in what units?

Rem

The amount of x-rays received in the course of employment by an individual since 18 years of age is called what?

Occupational dose

The length of cord on the hand or foot switch cannot be less than how long?what

6 feet

How many millirems are there in 7.5 rems of radiation exposure?

7500

To evaluate the integrity of aprons/ gloves, they are best radiographed using the following exposure factors:

85 kVP, 10 mAs, 40@ffd

Which adjustment of the x-ray machine will give variety to the penetrating ability of the x-ray beam?

kVp

Chronic exposure to radiation will most likely cause which of the following?

All of the above

What is the optimum time of development of an x-ray at 68 degrees Fahrenheit?

5 minutes

The minimum standard of lead equivalent for aprons is 0.25 mm and for gloves is what?

the same (0.25mm)

 What causes a clear border around developed x-ray film?

Collimation

Chronic exposure of individuals to low levels of radiation can have which of the following health effects?

All of the above

Pregnant women should avoid exposure to radiation because of which of the following increased risks to their fetus?

Childhood leukemia and other cancers

Why are individuals under the age of 18 excluded from performing or assisting in radiography?

They are at greater risk of radiation injury because their cells are reproducing more rapidly

An unregistered assistant may operate radiographic equipment under which of the following circumstances?

Under the direct supervision of an RVT or a licensed veterinarian

Where should a radiation monitoring device be worn for routine radiography?

Outside the apron at thyroid level

Which of the following statements describes the purpose of collimation?

It reduces the amount of scatter

Which of the following actions must a person who is in the x-ray room take at the time of exposure?

Wear a protective apron of preferably 0.5mm lead-equivalent

Leaded gloves are required to be worn to protect the operator from which of the following dangers when performing veterinary radiography?

Exposure to scatter radiation

Which of the following techniques should a veterinary radiographer use to increase radiation safety?

All of the above

Why should leaded goggles be worn when restraining an animal patient for radiography?

To protect the lens from exposure to x-rays

What is the effect on the operator’s exposure to radiation by increasing the distance between the operator and the source of radiation?

Reduces the exposure to radiation

What is the purpose of cassette holders in large animal radiography?

To reduce the assistant’s exposure to radiation

Which of the following statements accurately describes appropriate radiation safety protocol?

No individual should be employed or regularly used to hold animal patients during radiation exposures

Which of the following duties is a responsibility of the employing/supervising veterinarian?

All of the above

Which of the following statements describes a female radiographer’s special risks?

The embryo/fetus is most sensitive to radiation during the first three (3) months of pregnancy

Which of the following statements is true regarding digital radiography?

Digital radiography is no safer for the patient and the operator than conventional radiography

Which of the following techniques is recommended when using digital radiography?

Use adjustments in the software to enhance the image