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Radiographic Technique
Protecting the Patient
Shielding/Lead
Protecting Personnel
Misc
100
When performing an exam that can be done either AP or PA; which is best to save dose to the thyroid? 
PA 
100
What does ALARA stand for?
As Low As Reasonably Acheviable 
100
Name the three types of shields available? 
1. contact 

2. shadow 

3. shaped 

100
If pregnant a second TLD must be worn where? 
under the lead apron at waist level 
100
Tube leaking from the tube housing must not exceed ____?
100mR/hour 
200
True or False: mAs is indirectly proportional to patient exposure?
False 
200
Which Fluoro mode has the potential to save the most dose to the patient? 
Pulsed 
200
How many times a year do lead aprons get check for cracks? and How do they get checked?
once 

Fluoro 

200
List the 3 cardinal rules 
Time, Distance, & Shielding 
200
Where is the best location to wear your TLD when performing Fluoro procedures? 
Outside of the lead apron at collar level 
300
When increasing the technique; which factor should be adjusted first? 
kVp 
300
For a 75kVp x ray beam projected directly at a lead apron of 0.5mm of lead, about what percentage of radiation will be blocked? 
88% 
300
What is the 5cm rule when shielding for gonads? 
anytime the gonads are within 5cm of the proper collimated light field 
300
Each scatter event reduces radiation intensity to approximately ____? 
1/1000th 
300
Name two types of Filtration 
Inherent & Additive 
400
What is the most effective way to save dose to the patient?
Collimation 
400
When is the best time for a female to have elective scheduling? 
10 days following the onset of menstrual cycle 
400
If a female patient comes in of childbearing age, how would you question them on pregnancy? 
is there any chance you COULD be pregnant 
400
Why is the location of your TLD specified to be worn at collar level?
Because it gives a reading of dose that is closest to your thyroid/lens of your eyes (very sensitive) 
400
With an accidental exposure, What is the skin entrance exposure to an embryo?  
1/3 the skin entrance exposure to the mother 
500
Half Value Layer is a direct measurement of what? 
 penetration quality of the x-ray beam 
500
The x ray tube to table top distance for fixed units SHALL not be ____cm?
38 cm 
500
What is the Lead equivalent and height requirement for a primary barrier? 
1.5 mm lead (1/16") 

7Ft 

500
True or False: For a fixed radiation unit, the cord must be able to extend a minimum of 6ft 
FALSE!!!! 
500
When did Roentgen discover x-rays ?
November 8th, 1895