SUPERVISOR AND OPERATOR RAD EXAM 2025

SUPERVISOR AND OPERATOR RAD
EXAM 2025

Which of the following occur minutes to hours after exposure to ionizing radiation?



1.) functional damage & morphological changes

2.) Appearance of atypical cells

3.) Cataract formation - Precise Answer ✔✔1 & 2



If the operator stands behind a portable shield, which may allow scattered radiation to pass around it's
edges; total radiation dose reduction would be approximately:

a.) 50%

b.) 75%

c.) 92%

d.) 99% - Precise Answer ✔✔99%



Which of the following are SHORT TERM stepwise effects of radiation exposure?

1.) life-span shortening

2.) primary radiochemical reactions

3.) functional damage of cells



A.) 1 and 2

b.) 1 and 3

c.) 2 and 3

d.) 1, 2, and 3 - Precise Answer ✔✔C. 2 and 3



Limited permit X-ray technicians are excluded from:

,A.) taking plain radiographs of the extremities

B.) operating portable or mobile X-ray equipment

C.) taking plain radiographs of the chest

d.) all of the above - Precise Answer ✔✔B.) operating portable or mobile X-ray equipment



An example of a radiographic study using natural shielding to decrease radiation to the ovaries is:

A.) AP T/S

b.) AP pelvis

c.) lateral femur

d.) PA lumbar spine - Precise Answer ✔✔d.) PA Lumbar Spine



Which of the following is part of the x-ray tube anode?



1.) positive electrode

2.) negative electrode

3.) target - Precise Answer ✔✔1 and 3.



Which electron interaction with the anode causes x-ray beam to be polygenergetic?



A.) characteristic

b.) Compton

c.) pair production

d.) Bremsstrahlung - Precise Answer ✔✔d.) Bremsstrahlung



What happens to the nominal focal spot size as the x-ray tube target (anode) decreases?



A.) decreases

B.) stays the same

c.) increases

,d.) inverts - Precise Answer ✔✔a.) decreases



Which of the following will reduce patient radiation dose?



a.) increased thickness of the alum. tabletop

b.) use more radio-absorbent cassette fronts

c.) use KEVLAR cassette fronts

d.) increase grid ratio - Precise Answer ✔✔?? Look up see page?



What accounts for most of the repeated radiographs (retakes/repeats) today?



a.) incorrect film storage

b.) incorrect selection of PRIMARY FACTORS

c.) lack of collimation

d.) incorrect film processing - Precise Answer ✔✔b.) incorrect selection of PRIMARY FACTORS



0.5 mm lead equivalent gonad shields placed over the ovaries/testes reduce radiation dose to the
gonads approximately ______%



a.) 55%

b.) 80%

c.) 92%

d.) 100% - Precise Answer ✔✔c.) 92% (verify)



Under which of the following conditions much gonads be shielded?

1.) the patient is of reproductive age

2.) the shield will not interfere with the diagnosis

3.) the gonads lie within 5 cm of the primary beam - Precise Answer ✔✔All of the Above

verify 5 cm..

, To reduce the radiation dose to patients, it is necessary to formulate your radiographic technique chart
so that the kVP is __________ and the mAs is ____________.



a.) high, high

b.) low, low

c.) high, low

d.) low, high - Precise Answer ✔✔C.) high kVp, low mAs



Approximately, what % of cases will require minor adjustments to a radiographic technique chart?



A.) 5

B.) 10-25

c.) 25-50

D.) 75 - Precise Answer ✔✔B. 10-25



How should exposure factors be adjusted for a patient with emphysema?



a.) keep kVP the same, double mAs

b.) keep kVP the same, halve the mAs

c.) increase kVp, keep same mAs

d.) no change is necessary - Precise Answer ✔✔b.) keep kVP the same, halve the mAs



An emphysematous patient will need___________ exposure than/an as patient with pneumonia.



a.) 50% more

b.) 100% more

c.) the same

d.) less - Precise Answer ✔✔d.) less