The biological effects of radiation are

known to be influenced by all of the

following EXCEPT the:

a. type of radiation and dose rate

deliver to the tissue

b. size of the cells in the tissue

exposed

c. total dose received by the tissue

d. type of cells in the tissue exposed

2. As the kilovoltage peak is increased and

the milliampere seconds

correspondingly decreased, which of the

following occurs?

a. image contrast increases

b. image distortion increases

c. patient skin exposure increases

d. patient skin exposure decreases

3. The greatest contribution of

unnecessary radiation exposure to the

patient comes from the x-ray operator’s

failure occurs?

a. collimate the x-ray beam to the area

of clinical interest only

b. use proper gonadal shielding

c. use fast screens and films

d. use proper exposure (technical)

factors

4. All of the following must be posted in

areas where x-ray producing machines

are utilized EXCEPT:

a. each x-ray supervisor and operator

permit

b. each certified radiologic and

operator permit

c. Radiologic Health Department Form

RH-2364, “Notice to Employees”

d. each physician’s license for the

healing arts

5. During a 2-minute (fluoroscopy

exposure time) routine upper G.I. series

examination, a typical x-ray exposure to

the patient is:

a. 0.5 roentgens

b. 1.0 roentgens

c. 6.0 roentgens

d. 30.0 roentgen

6. The California Radiation Control

Regulations define dose to mean

radiation absorbed per unit mass.

Whole-Body dose means exposure to

which of the following: I Major portions

of the whole body

II Head and trunk

III Gonads

IV Lens of the eye

V Active blood-forming organs

VI Whole body

a. I only b. I, III, IV & VI only

c. I & IV only d. all of the above

7. According to the California radiation

Control Regulations, all EXCEPT which

of the following is defined as an

occupational dose? The dose received

by any occupationally exposed person:

a. in a controlled area

b. in the course of employment

c. during the course of training

d. for his/her own medical or dental

diagnosis

8. The major source of secondary radiation

in radiography is the:

a. walls, floor and ceiling

b. cassette