| Question 1: Do patients receive 100mSv+ from diagnostic scanning? |
| Reference: | Rehani MM, Yang K, Melick ER, et al. Patients undergoing recurrent CT scans: assessing the magnitude. Eur Radiol Apr 2020; Apr;30(4):1828-1836. Full text at: https://rdcu.be/b35g4. |
| Choice A: | Yes |
| Choice B: | No |
| Question 2: A recent study has shown that patients with 100 mSv+ of cumulative effective dose from recurrent CT scans are about |
| Reference: | Rehani MM, Yang K, Melick ER, et al. Patients undergoing recurrent CT scans: assessing the magnitude. Eur Radiol Apr 2020; Apr;30(4):1828-1836. Full text at: https://rdcu.be/b35g4. |
| Choice A: | 10 out of 100 patients undergoing CT exams |
| Choice B: | 1 out of 100 patients undergoing CT exams |
| Choice C: | 0.1 out of 100 patients undergoing CT exams |
| Choice D: | 0.01 out of 100 patients undergoing CT exams |
| Question 3: It is possible that the minimum time to accrue 100 mSv through CT procedure is a single day? |
| Reference: | Reference: Rehani MM, Yang K, Melick ER, et al. Patients undergoing recurrent CT scans: assessing the magnitude. Eur Radiol Apr 2020; Apr;30(4):1828-1836. Full text at: https://rdcu.be/b35g4 |
| Choice A: | Yes |
| Choice B: | No |
| Question 4: The patients who have been shown to receive 100 mSv of cumulative effective dose are those |
| Reference: | Rehani MM, Yang K, Melick ER, et al. Patients undergoing recurrent CT scans: assessing the magnitude. Eur Radiol Apr 2020; Apr;30(4):1828-1836. Full text at: https://rdcu.be/b35g4 |
| Choice A: | Only with malignancy |
| Choice B: | Nearly 90% above the age of 50 years |
| Choice C: | Nearly 1 out of 5 are ≤ 50 years of age |
| Choice D: | In whom CT imaging that overutilized |
| Question 5: All the following allow a reduction in a patient’s single-day radiation exposure from CT EXECPT: |
| Reference: | Sodickson, Strategies for Reducing Radiation Exposure in Multi-Detector Row CT, Radiol. Clin. North Am. 50(1), 1–14 (2012). |
| Choice A: | Reducing z-direction overlap in CT series of adjacent body parts |
| Choice B: | Not performing a non-contrast phase when not indicated |
| Choice C: | Referring to the dose received by the patient previously on a similar exam |
| Choice D: | Reconstructing a spine exam from a previously acquired abdomen/pelvis exam |
| Question 6: There are a few indications for which non-contrast phase of an abdomen CT can be eliminated, but most indications require both non-contrast and contrast phases |
| Reference: | M.K. Kalra, A.D. Sodickson, and W.W. Mayo-Smith, CT radiation: Key concepts for gentle and wise use, Radiographics 35(6), 1706–1721 (2015). |
| Choice A: | True |
| Choice B: | False |
