Safety

Front 1

Which of the following is recommended to reduce unnecessary irradiation of the patient or persons restraining the patient and to decrease scatter radiation?

-opening the collimator as wide as possible

-placement of a lead apron over the area of interest on the patient

-selection of full wave rectification as opposed to half wave rectification on the control panel

-adjust the collimator so that the smallest field size possible is used

Back 1

adjust the collimator so that the smallest field size possible is used

Front 2

Veterinary patients have a tendency to move while being positioned for radiographs. The radiographer should help to safely prevent artifacts of movement by:

-using shortest exposure time possible

-altering the direction in which the x-rays move

-selecting longer exposure time than is recommended

-sedating all patients before taking radiographs

Back 2

using shortest exposure time possible

Front 3

What is the thickness of lead impregnated rubber lining protective apparel in veterinary radiography?

-1cm

-10 mm

-0.5 mm

-0.5 cm

Back 3

0.5 mm

Front 4

What type of dosimeter can be stored for years, maintains its information, and can be reused?

-pocket ionization chamber

-collimator

-thermoluminescent dosimeter

-film badge

Back 4

thermoluminescent dosimeter

Front 5

Which statement is true?

-the body's cells are all approximately equally sensitive to radiation

-ionizing radiation only damages DNA within reproductive cells

-chemical restraint of veterinary patients is prohibited by the NCRP in the US

-genetic damage is not detectable until future generations are produced

Back 5

-genetic damage is not detectable until future generations are produced

Front 6

All of the following are type of somatic damage except:

-cancer

-cataracts

-gene mutation

-sterility

Back 6

gene mutation

Front 7

The best way to avoid scatter radiation is by putting distance between you and the primary beam.

True or False

Back 7

True

Front 8

Which of the following tissues is least sensitive to ionizing radiation?

-Lymphoid tissue

-Lens of the eye

-Skin

-Bone

Back 8

Bone

Front 9

The best way to check your safety equipment is to radiograph them to check for leaks in the lead. Leaks would show as white area on the film.

True or False

Back 9

False

Front 10

According to state and federal guidelines, what is the maximum permissible dose of occupational radiation one can get in a year?

-0.5 rem/ year

-1 rem / year

-1.25 rem/year

-5 rem year

Back 10

5 rem year

Front 11

Which of the following statements are true?

-Veterinary personnel who restrains animals for radiology are often exposed to the primary beam

-scatter radiation can be reduced by collimation

-Aluminum filtration helps to increase soft, less penetrating x-rays thus increasing quality of the radiograph

-scatter radiation is produced by the primary beam interacting with the anode

Back 11

scatter radiation can be reduced by collimation

Front 12

Scatter depends on:

-the intensity of the beam

-the composition of the structure being radiographed

-kilovoltage level

-all of the above

Back 12

all of the above

Front 13

The name of the radiation monitoring device that is worn during exposure is

-calipers

-dosimeter

-rem

-none of the above

Back 13

dosimeter

Front 14

After taking a radiographs you must wait 30 seconds before re entering the room to allow for the dissipation of radiation

True or False

Back 14

False

Front 15

X-rays can not penetrate:

-bone

-interior walls of most animal hospitals

-lead

-b and c

Back 15

lead

Front 16

Why are rotating anode x-ray machines more powerful than stationary cathode x-ray machines?

-The former allow greater dissipation of heat

-the former allow the use of a smaller focal spot with higher tube currents

-the former allow the use of shorter exposure times

-all of the above

Back 16

all of the above

Front 17

The primary source of radiation exposure to a technician during radiography is scatter radiation, which can be best defined as:

-radiation produced when no collimator is used

-lower energy x-ray photons that have undergone a change in direction after interacting with structures in the patient's body.

-high-energy x-ray photons from the primary x-ray beam

-lower-energy photons produced when radiographing thick body parts

Back 17

lower energy x-ray photons that have undergone a change in direction after interacting with structures in the patient's body.

Front 18

For safety reasons portable x-ray machines should not be hand held.

True or False

Back 18

True

Front 19

If a pregnant woman is in the radiolgy suite and her baby's cells are damaged by radiation what type of damage is this:

genetic

somatic

generational

reproductive

electromagnetic

Back 19

somatic

Front 20

Match the term with the measurement associated with it.

____dose equivalent

____absorbed dose

1.Gy

2.Sv

Back 20

__2__dose equivalent

__1__absorbed dose

Front 21

A Sievert (Sv) is derived from the following equation

-Gy x quality factor = Sv

-Gy x thickness = Sv

-distance from focal point x mAs = Sv

-distance from focal point x kVp = Sv

-distance from focal point x quality factor = Sv

Back 21

Gy x quality factor = Sv

Front 22

A person in the radiology suite wearing lead goggles, thyroid shield, apron, gloves and a dosimeter is as safe as a person outside the radiology suite.

True or False

Back 22

False

Front 23

A dosimeter should be worn

-under the lead apron

-the entire day working in hospital

-on a hook in the x-ray room

-during radiographic procedures

-constantly for a month

Back 23

during radiographic procedures

Front 24

It is permissible to place hands in the primary beam if wearing lead gloves.

True or False

Back 24

False

Front 25

Lead gloves protect hands when laid on top of the hands.

True or False

Back 25

False

Front 26

X-rays only travel downward in a straight line.

True or False

Back 26

False

Front 27

Choose all the ways a person can be exposed to radiation from an x-ray machine.

-scatter radiation

-the primary beam

-x-ray leaks from the tube housing

-developing x-ray film

-handling x-ray film post exposure

Back 27

-scatter radiation

-the primary beam

-x-ray leaks from the tube housing

Front 28

A device on the x-ray machine that limits the size of the primary beam is called the

-collimator

-window

-aluminum filter

-time switch

-voltage regulator

Back 28

collimator

Front 29

Ways to decrease the number of personnel in the radiology suite include:

-using higher KvP settings

-using lower time setting with higher mA setting

-sedating patients

-none of the above

Back 29

sedating patients

Front 30

Protective equipment protects you from:

-Primary beam so your body is protected from radiation

-Both primary beam and scatter radiation

-Scatter radiation and none of your body part should be in the primary beam

Back 30

-Scatter radiation and none of your body part should be in the primary beam

Front 31

You can reduce your exposure to radiation by increasing your distance from the primary beam.

True or False

Back 31

True