Radiation Disasters Knowledge Check for Health Providers
Questions developed by Gary Crouch, MD, MHSA
Col (Ret), USAF, MC
Vice Chair, Department of Pediatrics
Uniformed Services University of the Health Sciences


1.Which of the following is the most effective shielding for Neutron radiation?
A) Paper
B) Lead
C) Thick plastic
D) Thick concrete

2.The unit of energy used to quantify the amount of energy of any type of ionizing radiation that is transferred to the body is the ______.
A) Curie (Ci)
B) Roentgen (R)
C) Gray (Gy)
D) Sievert (Si)

3.Which of the following is used as a form of biodosimetry to estimate the extent of radiation exposure?
A) Time to onset of vomiting
B) Lymphocyte kinetics
C) Bioassay sampling
D) All of the above

4.External contamination occurs with ionizing irradiation when:
A) A patient receives a chest X-ray
B) A child sucks his thumb after touching radioactively contaminated soil
C) Radioactive ash falls in the hair following a nuclear reactor accident
D) None of the above

5.Simply removing contaminated clothing and shoes is an effective method for removing the majority of external contamination.
A) True
B) False

6.There are multiple cases reported demonstrating that health care personnel are at severe danger from caring for patients with radiation exposure.
A) True
B) False

7.The sources for obtaining medical treatments, such as DTPA and Prussian Blue, for internal contamination of certain radioactive substances is:
A) US Strategic National Stockpile
B) The Radiation Emergency Assistance Center/Training Site (REAC/TS) in Oak Ridge, Tennessee
C) Your local pharmacy
D) A and B

8.A dose of 1-4 Gy of whole-body irradiation to a 4 year old child is likely to result in:
A) Acute Radiation Hematopoietic Syndrome
B) Acute Radiation Gastrointestinal Syndrome
C) Acute Radiation Cerebrovascular Syndrome
D) Is not likely to cause any health problems for this child

9.Which of the following does NOT indicate a good prognosis for recovery from a whole-body irradiation incident?
A) Initial episode of vomiting >4hours after incident
B) Initial episode of vomiting <4 hours after incident
C) Stable serial lymphocyte counts over the first 48 hours after the incident
D) No other significant injuries

10.At what dose of whole-body irradiation exposure is it unlikely for the patient to survive despite intensive supportive therapy?
A) 1-2 Gy
B) 3-4 Gy
C) 5-6 Gy
D) > 8 Gy