Worksheet 2

Question 1

A Sievert (Sv) is the
a. The film badge that measures radiation.
b. Radiation that occurs when the primary beam interacts with matter.
c. Unit of radiation dose equivalent to the absorbed dose in tissue.
d. Unit of absorbed dose imparted by ionizing radiation.

Answer 1

c. Unit of radiation dose equivalent to the absorbed dose in tissue.

Question 2

Where is the BEST place to place the dosimeter when near or involved with radiation?

Answer 2

On thyroid shield - near face and neck

Question 3

When taking radiographs, you should whenever possible, _________ exposure time, ________ distance from radiation sources and _________ shielding

Answer 3

decrease
increase
increase

Question 4

There is a gloved hand visible on a radiograph. This is:
a. Not a problem, because shielding protects you from primary radiation.
b. Not a problem, because shielding protects you from secondary radiation.
c. An interesting artifact that appears black.
d. A real concern, because the hand has been exposed to radiation

Answer 4

d. A real concern, because the hand has been exposed to radiation

Question 5

What do the letters ALARA stand for?

Answer 5

As Low As Reasonably Achievable

Question 6

The minimum age, in years, for a person to be involved in radiographic procedures is

Answer 6

18

Question 7

One Sievert (Sv) equals _____ rem.

Answer 7

100

Question 8

The maximum permissible dose (MPD) for whole-body radiation per year in Sv is

Answer 8

0.05

Question 9

Anyone working with, or in the near vicinity of an x-ray machine should use

Answer 9

Dosimetry badges

Question 10

What does the unit of radiation exposure RAD stand for?

Answer 10

Radiation Absorbed Dose

Question 11

By adjusting what, you can increase or decrease the amount of scattered radiation

Answer 11

collimator

Question 12

What is the primary source of scatter radiation?
a. Target anode
b. Cassette
c. Patient
d. Primary beam

Answer 12

Patient

Question 13

Give 3 ways/examples to protect yourself when taking radiographs- think PPEs, where to stand, how to reduce scattered radiation etc….

Answer 13

Wear thyroid shield, gloves, gown and glasses (if available)

Stand as far away from primary beam as possible- if patient is anesthetized you may be able to leave room or stand behind a lead barrier

Be prepared and take an acceptable film the first time so you don’t have to be exposed over and over

Use the collimator every time

Question 14

2 “DOs” for proper care for a dosimeter

Answer 14

store away from radiation
only wear your own

Question 15

2 “DON’Ts” for proper care for a dosimter

Answer 15

leave it in your car
don’t take it home
leave it in the xray room
share with coworkers

Question 16

Atoms that emit particles and NRG to become stable are known as:

Answer 16

Radionuclides