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Table 1
Questionnaire on radiation doses and risk.
| 1. Sex | M | F | |||
| 2. What is your age range? | a. 25–30 | b. 30–35 | c. 35–40 | d. 40–45 | e. > 45 |
| 3. What are your qualifications? | a. Master’s degree or higher | b. Bachelor’s degree | c. Diploma | ||
| 4. How many years of professional experience do you have? | a. 1–5 years | b. 5–10 years | c. 10–15 years | d. 15–20 years | e. > 20 years |
| 5. Average natural background radiation is in the range of | a. 20–30 mSv | b. 2–3 mSv | c. 0.2–0.3 mSv | d. 200–300 mSv | |
| 6. The approximate effective dose received by a patient from a 1-view chest X-ray is | a. 0.5 mSv | b. 1 mSv | c. 0.02 mSv | d. 0.05 mSv | |
| 7. The approximate effective dose received by a patient from a 2-view chest X-ray is | a. Almost equal to the amount 1-view chest X-ray | b. Twice the amount of 1-view chest X-ray | c. 5 times the amount of 1-view chest X-ray | d. 10 times the amount of 1-view chest X-ray | |
| 8. The effective dose from 1-view abdominal X-ray is equivalent to | a. 0–1 chest X-rays | b. 1–10 chest X-rays | c. 10–50 chest X-rays | d. 50–100 chest X-rays | |
| 9. Single-phase abdominal CT delivers a dose of | a. 10 mSv | b. 100 mSv | c. 1 mSv | d. None | |
| 10. The dose from abdominal CT is equivalent to dosage from | a. 10–100 chest X-rays | b. 100–500 chest X-rays | c. > 1000 chest X-rays | d. 1 chest X-ray | |
| 11. The dose from head CT is equivalent to dosage from | a. 10–50 chest X-rays | b. 50–100 chest X-rays | c. 100–500 chest X-rays | d. 10 chest X-rays | |
| 12. The dose from 2-view unilateral mammogram is | a. Almost equal to the amount of 1-view chest X-ray | b. Twice the amount of 1-view chest X-ray | c. 10–20 times the amount of 1-view chest X-ray | d. 50–100 times the amount of 1-view chest X-ray | |
| 13. Which of the following has no radiation risks? | a. Fluoroscopy | b. MRI | c. PET | d. Technetium bone scan | |
| 14. Which of the following patient groups is most sensitive to radiation? | a. Children | b. Adolescent | c. Adults | d. Elderly | |
| 15. The approximate estimated risk of fatal cancer from chest X-ray is | a. Minimal: 1 in 1,000,000 to 1 in 100,000 | b. Very low: 1 in 100,000 to 1 in 10,000 | c. Low: 1 in 10,000 to 1 in 1,000 | d. Moderate: 1 in 1000 to 1 in 500 | |
| 16. The approximate estimated risk of fatal cancer from abdominal CT is | a. Minimal: 1 in 1,000,000 to 1 in 100,000 | b. Very low: 1 in 100,000 to 1 in 10,000 | c. Low: 1 in 10,000 to 1 in 1000 | d. Moderate: 1 in 1000 to 1 in 500 | |
| 17. The approximate estimated risk of fatal cancer from coronary CT angiography is | a. Minimal: 1 in 1,000,000 to 1 in 100,000 | b. Very low: 1 in 100,000 to 1 in 10,000 | c. Low: 1 in 10,000 to 1 in 1000 | d. Moderate: 1 in 1000 to 1 in 500 | |
| 18. The approximate estimated risk of fatal cancer from head CT is | a. Minimal: 1 in 1,000,000 to 1 in 100,000 | b. Very low: 1 in 100,000 to 1 in 10,000 | c. Low: 1 in 10,000 to 1 in 1000 | d. Moderate: 1 in 1000 to 1 in 500 | |
| 19. The approximate estimated risk of fatal cancer from whole-body PET is | a. Minimal: 1 in 1,000,000 to 1 in 100,000 | b. Very low: 1 in 100,000 to 1 in 10,000 | c. Low: 1 in 10,000 to 1 in 1,000 | d. Moderate: 1 in 1000 to 1 in 500 | |
| 20. The approximate estimated risk of fatal cancer from chest CT is | a. Minimal: 1 in 1,000,000 to 1 in 100,000 | b. Very low: 1 in 100,000 to 1 in 10,000 | c. Low: 1 in 10,000 to 1 in 1000 | d. Moderate: 1 in 1000 to 1 in 500 | |
| 21. A pregnant woman underwent a contrast CT scan of her abdomen and pelvis, but the CT technologist did not inquire about her pregnancy status before performing the CT. According to ACR guidelines, what is the recommended course of action? | a. Reassure the mother that the risk to the fetus is negligible | b. Suggest medical termination of the pregnancy as an option | c. Perform genetic analysis by amniocentesis or chorionic villous biopsy | d. Perform fetal MRI to look for CNS anomalies |
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