Safety - Personal Protection ALARA

Question 1

To prevent leakage radiation from exposing the patient, an x-ray must have how much protective lead?

Answer 1

1.5 mm

Question 2

What is the effective dose limit a radiation work for me to receive to his or her whole body in one year?

Answer 2

50 mSv

Question 3

What is the effective dose limit? A radiography student may receive in one year if they’re under 18 years old?

Answer 3

1 mSv

Question 4

Which refers to the x-ray beam after it has passed through the beam restricting device?

Answer 4

Primary beam

Question 5

And optically stimulated luminescence dosimeter uses which of the following to detect radiation?

Answer 5

Aluminum oxide

Question 6

Mobile fluoroscopic equipment must have what?

Answer 6

Image intensifier

Question 7

What is the effective dose limit for a non-radiation worker?

Answer 7

5.0 mSv/year

Question 8

How far must a radiographer stand back Durnan mobile radiographic exposure?

Answer 8

2 meters (6 feet)

Question 9

What was the lead equivalent be for a lead apron?

Answer 9

0.50 mm

Question 10

What are the two general types of radiation detection devices?

Answer 10

Field survey, and personal monitoring

Question 11

How thick is the lead be in a primary barrier of radiographic room?

Answer 11

1/16 inch

Question 12

What is the effective dose limit to the fetus of a pregnant radiologic technologist?

Answer 12

0.5 mSv/month

Question 13

What is the equivalent dose limit for the hands and feet of a technologist?

Answer 13

500 mSv/year

Question 14

The lead equivalency for a pair of protective gloves must be at least how much?

Answer 14

0.25 mm

Question 15

Leakage radiation from the x-ray tube, cannot exceed which of the following at a distance of 1 meter?

Answer 15

1 mGy/hr/meter

Question 16

What refers to measuring the quantity of an x-ray beam?

Answer 16

Dosimetry

Question 17

Radiation monitoring instruments, depend on what?

Answer 17

Ionization

Question 18

The dose equivalent limits for radiation workers is based on the radiation received from what sources?

Answer 18

Occupational exposure

Question 19

What is the cumulative whole body does limit for a 25 year old radiation worker?

Answer 19

250 mSv

Question 20

The exposure of a radiation monitoring devices compared to which of these to determine the occupational exposure to the worker?

Answer 20

Control radiation monitoring device

Question 21

What is the exposure rate of 75 MAS results in an exposure 600 mGy

Answer 21

8 mGy/mAs

(define exposure rate, divide mGy/mAs

Question 22

What is the effective dose limit for the whole body of a radiation worker??

Answer 22

50 mSv/year

Question 23

Personal monitoring shall be performed if there is a possibility of exceeding how many millisieverts per year?

Answer 23

5.0 mSv

Question 24

Which of the following personal monitoring devices is capable of providing an immediate reading?

Answer 24

Pocket dosimeter

Question 25

What is the effective dose limit for the eyes of radiation worker?

Answer 25

150 mSv/year

Question 26

A radiographer will receive most of their occupational exposure from what two types of radiation?

Answer 26

1. Leakage radiation
2. Scatter radiation