RGT 2911 Ch 10

Which of the following is a measure of dose to biologic tissue?

A. Roentgen
B. Rem (Sv)
C. Rad (Gy)
D. RBE

What is the annual dose limit for a student radiographer who is younger than 18 years and beginning clinical assignments?

A. 10 rem (100 mSv)
B. 0.5 rem (5 mSv)
C. 5 rem (50 mSv)
D. 0.1 rem (1 mSv)

The purpose of filters in a film badge is:

A. To measure radiation quality
B. To support the film contained within
C. To prevent exposure from alpha particles
D. To eliminate harmful rays

The dose limits established for the OSL, TLD, film badge, and pocket dosimeter are valid for:

A. Alpha-, beta-, and x radiations
B. Beta-, x- and gamma radiations
C. All ionizing radiations
D. X- and gamma radiations only

The operation of personal radiation monitoring devices can depend upon:
1. Ionization
2. Thermoluminescence
3. Resonance

A. 1 & 2
B. 2 & 3
C. 1 only
D. All 3

What is the established monthly fetal dose-limit guideline for pregnant radiographers?

A. 0.05 rem (0.5 mSv)
B. 5 rem (50 mSv)
C. 10 rem (100 mSv)
D. 0.5 rem (5 mSv)

Which of the following crystals are used in an optically luminescent dosimetry system?

A. Ferrous sulfate
B. Lithium fluoride
C. Silver bromide
D. Aluminum oxide

Potential ionizing radiation damage to tissue is dependent upon the:
1. Z number of the tissue
2. Type of ionizing radiation
3. Mass density of the tissue

A. 2 & 3
B. 1 only
C. 1 & 2
D. All 3

The unit of measurement used to express occupational exposure is the:

A. Relative biologic effectiveness (RBE)
B. Rem (Sievert)
C. Roentgen
D. Rad (Gray)

The NCRP recommends an annual effective occupational dose-equivalent limit of:

A. 200 mSv (20 rem)
B. 25 mSv (2.5 rem)
C. 100 mSv (10 rem)
D. 50 mSv (5 rem)