Radiography Exam Radiation Protection and Safety 2

Question 1

Protective lead shielding should be placed between the radiation source and a fertile woman's gonads when the gonadal dose would exceed:

Accepted Answer

5 mGy (0.5 rad) during the entire pregnancy

Answer

Gonadal shielding should be used when the gonads are within 5 cm of the primary beam or when the gonadal dose would exceed 5 mGy (0.5 rad) during the gestation period.

Question 2

The declared pregnant radiation worker has a monthly dose equivalent limit of:

Accepted Answer

0.5 mSv (0.05 rem)

Answer

NCRP recommends a monthly dose limit of 0.5 mSv (50 mrem) for the embryo/fetus of a declared pregnant radiation worker.

Question 3

Which device provides an immediate, real-time readout of radiation dose during a procedure?

Accepted Answer

Pocket ionization dosimeter

Answer

Pocket ionization dosimeters (pocket dosimeters) provide an immediate readout of accumulated dose during a procedure.

Question 4

What is the recommended practice for wearing a radiation monitoring badge during fluoroscopy when wearing a lead apron?

Accepted Answer

Wear two badges: one outside at collar, one under apron at waist

Answer

During fluoroscopy, two badges are recommended: one at collar level outside the apron and one under the apron at waist level to accurately estimate effective dose.

Question 5

Primary radiation barriers must attenuate the useful beam to what level?

Accepted Answer

The primary barrier must reduce transmission to 1 mSv/week

Answer

Primary barriers are designed to reduce the transmitted primary beam to an acceptable level, typically 1 mSv (0.1 rem) per week for controlled areas.

Radiography Exam Practice Test

Radiography Exam Practice Test

Radiography Exam Radiation Protection and Safety 2