Free RCIS Radiation Safety and Physics Questions and Answers

Question 1

The ALARA principle in radiation safety stands for:

Accepted Answer

As Low As Reasonably Achievable

Answer

Always Limit All Radiation Annually

Answer

All Levels Are Relatively Acceptable

Answer

Always Lower Angulation and Rate Accordingly

Question 2

According to the inverse square law, if you double your distance from a radiation source, your exposure is reduced by a factor of:

Accepted Answer

4

Answer

2

Answer

6

Answer

8

Question 3

The unit used to measure the occupational effective dose of radiation for personnel is the:

Accepted Answer

Sievert (Sv)

Answer

Gray (Gy)

Answer

Roentgen (R)

Answer

Becquerel (Bq)

Question 4

In a cardiac catheterization lab, the primary source of radiation exposure to the operator is:

Accepted Answer

The patient

Answer

The x-ray tube housing

Answer

The image intensifier/detector

Answer

The control room monitor

Question 5

A standard lead apron used in the cath lab typically provides a lead equivalency of:

Accepted Answer

0.50 mm

Answer

0.10 mm

Answer

0.25 mm

Answer

1.00 mm

Question 6

Which of the following actions will most effectively reduce the patient's radiation dose during a fluoroscopic procedure?

Accepted Answer

Increasing the distance between the x-ray tube and the patient

Answer

Using magnification mode more frequently

Answer

Decreasing collimation to see more anatomy

Answer

Increasing the fluoroscopy frame rate