| Question 1: At what percentile is the diagnostic reference level (DRL) typically set? |
| Reference: | 1. Speaker slide set
2. ICRP, 2017. Diagnostic reference levels in medical imaging. ICRP Publication 135. Ann. ICRP 46(1). |
| Choice A: | typically set at the 25th percentile of the dose distribution |
| Choice B: | typically set at the 50th percentile of the dose distribution |
| Choice C: | typically set at the 75th percentile of the dose distribution |
| Choice D: | typically set at the 90th percentile of the dose distribution |
| Question 2: How can comparing to DRL help a facility monitor their CT dose? |
| Reference: | 1. Speaker slide set
2. ICRP, 2017. Diagnostic reference levels in medical imaging. ICRP Publication 135. Ann. ICRP 46(1). |
| Choice A: | Facilities can set their CT protocols at 1/10th of the DRL |
| Choice B: | Facilities can set their CT protocols at the DRL |
| Choice C: | Facilities can set their CT protocols at twice the DRL |
| Choice D: | Facilities can compare their patient doses to DRL and optimize their CT protocols. |
| Question 3: Which of the following parameters is not necessary to be part of the data collection for the determination of CT clinical DRLs? |
| Reference: | 1. The EUCLID project http://www.eurosafeimaging.org/euclid
2. International Commission on Radiological Protection (ICRP), 2017. Diagnostic reference levels in medical imaging. ICRP Publication 135. Ann. ICRP 46(1)
3. Public Health England. National Diagnostic Reference Levels (2019) https://www.gov.uk/government/publications/diagnostic-radiology-national-diagnostic-reference-levels-ndrls
4. Radiation Protection No 185, European Guidelines on DRLs for paediatric imaging, EU, 2018 http://www.eurosafeimaging.org/wp/wp-content/uploads/2018/09/rp_185.pdf |
| Choice A: | CTDIvol |
| Choice B: | DLP |
| Choice C: | Beam collimation |
| Choice D: | Image quality evaluation |
| Question 4: Patient dose repositories do not need to be validated as they originate from accurate estimations made by the dose management software: |
| Reference: | Clinical evaluation of a dose monitoring software tool based on Monte Carlo Simulation in assessment of eye lens doses for cranial CT scans. Guberina N, Suntharalingam S, Naßenstein K, Forsting M, Theysohn J, Wetter A, Ringelstein A. Neuroradiology. 2016 Oct;58(10):955-959. |
| Choice A: | True |
| Choice B: | False |
| Question 5: Which of the following parameters is not necessary to be part of the data collection for the determination of interventional radiology DRLs? |
| Reference: | 1. The EUCLID project http://www.eurosafeimaging.org/euclid
2. Public Health England. National Diagnostic Reference Levels (2019) https://www.gov.uk/government/publications/diagnostic-radiology-national-diagnostic-reference-levels-ndrls
3. International Commission on Radiological Protection (ICRP), 2017. Diagnostic reference levels in medical imaging. ICRP Publication 135. Ann. ICRP 46(1) |
| Choice A: | Patient skin dose |
| Choice B: | Total air kerma-area product |
| Choice C: | Cumulative air kerma at the patient entrance reference point |
| Choice D: | Image quality evaluation |
| Question 6: Which of the following is a challenge when using a dose management software? |
| Reference: | CT Radiation Dose Management: A Comprehensive Optimization Process for Improving Patient Safety. Anushri Parakh, Mika Kortesniemi, Sebastian T Schindera. Radiology 2016 Sep;280(3): 663-73. doi: 10.1148/radiol.2016151173 |
| Choice A: | Number of exams |
| Choice B: | Type of patient examination |
| Choice C: | Name of patient exam protocol |
| Choice D: | None of the above |
