Exercise 3

Question 0

What is the effective dose limit a radiography student may receive if he/she is under 18 years old?

Answer 0

1 mSv (.1 rem)

Question 1

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

Answer 1

1/16”

Question 2

What is an equivalent dose limit?

Answer 2

The dose that is not expected to produce significant effects

Question 3

What is not included in the while body dose?

Answer 3

Hands and feet

Question 4

How much lead equivalency should be used in a pair of protective gloves? Lead aprons? What NRCP?

Answer 4

.25 mm in gloves and .5 in aprons

NCRP #102

Question 5

What is the effective dose limit a radiation worker can receive in any one quarter (13 weeks) of the year?

Answer 5

30 mSv (3 rem)

Question 6

What should never be considered a primary barrier in normal diagnostic radiography?

Answer 6

The ceiling

Question 7

Personnel monitoring is required when there is any likelihood that an individual will receive more that how much of the effective dose limit?

Answer 7

1/10

Question 8

What percentage of the primary exposure to the patient will reach the radiographer standing 1 meter away?

Answer 8

.1%

Question 9

How far should a radiographer stand back during a portable xray?

Answer 9

2meters/ 6 feet

Question 10

Leakage radiation can not exceed how much at a distance of one meter?

Answer 10

2.58x10-5 Coulomb/kg/hr (100mR/hr)