MR Safety

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Question 1 of 10

1. Question
All of the following statements about the magnet of the MRI scanner are true except:
- A) The magnet is always on.
- B) The fringe field is confined to the magnet bore only.
- C) Large ferro-magnetic objects may be attracted by the field and fly toward the magnet at high speed.
- D) The strong magnetic field may disrupt the function of implants.
Question 2 of 10

2. Question
The main hazard of the radiofrequency field is:
- A) peripheral nerve stimulation
- B) objects become projectiles
- C) hearing damage
- D) thermal burns
Question 3 of 10

3. Question
Which one of the following statements is true?
- A) A fireman can enter the MRI scan room without screening.
- B) If an object is considered MR safe for 1.5T scanners, it must be safe to use in a 3.0T scanner as well.
- C) Patients with prosthetic devices should go through extensive MR safety investigation before the MR exam.
- D) Annual refresher training on MR safety is not necessary for level I MR personnel.
Question 4 of 10

4. Question
The emergency shutdown button should be activated to immediately cut power to the electrical system in the following situations except:
- A) scan room fire
- B) water leakage in the scan room
- C) the subject in the scanner squeezes the emergency ball
- D) unusual popping noises come from the scanner
Question 5 of 10

5. Question
One of the major risks of injuries due to a magnet quench is:
- A) the boiling off of cryogens creates an asphyxiating environment
- B) the disappearance of the magnetic field causes vertigo
- C) the magnet becomes so warm that it may cause thermal burns
- D) there is no danger with a magnet quench
Question 6 of 10

6. Question
The main hazard of the static magnetic field is:
- A) peripheral nerve stimulation
- B) missile effect
- C) hearing damage
- D) thermal burns
Question 7 of 10

7. Question
One of the main hazards of the gradient field is:
- A) there is no danger associated with the gradient field
- B) missile effect
- C) hearing damage
- D) thermal burns
Question 8 of 10

8. Question
Which one of the following item should be included in the patient screening questionnaire regarding contrast agent safety:
- A) history of previous reactions to gadolinium-based contrast agents
- B) renal disease history
- C) pregnancy and breast feeding status
- D) all of the above
Question 9 of 10

9. Question
Before beginning an MR study on a subject, you should:
- A) clear the patient of all removable metal objects
- B) provide earplugs or other hearing protection methods to the patient
- C) check lines of remote verbal communication with the patient from the workstation
- D) all of the above
Question 10 of 10

10. Question
In the event your subject is in some type of medical distress during the MR scan, what is the first thing you should do:
- A) call the emergency line and remove the patient from the scanning room immediately
- B) ignore the situation and quickly finish the study
- C) call the emergency line and wait for personnel to arrive
- D) bring a crash cart into the MR scan room

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MR Safety

MR Safety

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