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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 Employeesâ€
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
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