SELF ASSESSMENT QUESTIONS FOR RADIATION PROTECTION
1. Distinguish between the following three surveys to evaluate ionizing radiation shielding, with
respect to appropriate timing, equipment, methodology, and purpose:
a. Visual inspection
b. Transmission measurements
c. Determination of adequacy of radiation barriers
2. Explain how a radiation room can be inspected to assure integrity of the shielding.
3. List 3 different technologies used for personnel dosimeters. Explain how each works, and how
they can distinguish between different types of radiation.
4. Explain what information is contained in a badge report. What does DDE, LDE, and SDE mean?
How do these relate to occupational exposure limits?
5. List 4 different methods of estimating the dose to a conceptus from a radiographic examination
of a pregnant patient. Explain how these methods are modified for fluoroscopic examinations.
6. Explain how to estimate the dose to the conceptus in a CT examination of a pregnant patient.
7. At what dose level is the risk of abnormality considered negligible compared to the other risks of
pregnancy regardless of the postconception age of the conceptus? Before what age
postconception and beyond what age postconception is the risk considered neglible regardless
of dose to the conceptus?
8. Of the following examinations of the abdomen what is the order from lowest to highest dose
expected to be delivered to the uterus: abdomen radiograph, barium enema, computed
tomography, hip and femur radiograph, interventional radiography of the abdomen, IVP, or
lumbar spine radiograph. Why?
9. What is the primary organ at risk in fluoroscopically-guided interventional procedures? Describe
the threshold doses and time course of injuries to this organ.
10. Explain how the principles of time, distance, and shielding are applied to radiation management
for the patient and staff in fluoroscopically-guided interventional procedures.