MRI Screening Questionnaire



MRI Safety Quiz

Name:________________________________________ Date:_________________

Lab affiliation:__________________________________

Signature ____________________________________

Signature of lab director ___________________________________________________

True/False:

| |T |F |

|1. There is clear evidence that scanning pregnant women with MRI is unsafe. | | |

|2. It is okay to scan someone with metal in his/her body, as long as it is not magnetic. | | |

|3. It is important to set up all fMRI equipment in the scan room before the subject/patient enters the room. | | |

|4. You should never press the big red button on the right wall in the scan room except in cases of extreme | | |

|emergency, such as a trapped and injured subject. | | |

|5. Noises produced by the MR scanner can reach 95dB, possibly causing discomfort or even ear damage to the subject. | | |

|6. If the gradient coil temperatures are excessively high, you will not be able to continue scanning. | | |

|7. An alarm will sound when oxygen levels in the scan room fall too low due to a helium leak. | | |

|8. It is generally okay to carry any non-magnetic metal into the scan room. | | |

|9. Helium exposure could cause frostbite and asphyxiation. | | |

|10. “Stainless steel” implies “non-magnetic.” | | |

|11. A paper clip can be pulled into a 1.5T magnet with a terminal velocity of 40mph. | | |

|12. It is okay to leave your subject/patient in the magnetic bore unsupervised for a short time. | | |

|13. Quenching can cause permanent damage to some components of the magnet, costing thousands of dollars. | | |

|14. If helium reaches a temperature above its boiling point, it will enter gas form and be vented by the MR-system | | |

|conduits. | | |

|15. As long as you have had the appropriate fMRI training and experience, it is acceptable for you to scan a subject| | |

|by yourself. | | |

|16. Pressing the red button on the scanner (to the right of the magnetic bore) shuts down the magnetic field. | | |

Multiple Choice (choose all that apply):

1. Which of the following objects are potential projectiles?

a. Watch

b. ID badge

c. Clipboard

d. Pencil

2. What are some possible consequences of a helium leak?

a. Fire

b. Ruptured eardrums

c. Asphyxiation

d. Hypothermia

3. If your patient complains of a body ache, dizziness or anxiety (including claustrophobia) during the middle of the scan, you should:

a. Wait till the end of the run, then remove the patient from the magnet.

b. Press the big red button on wall on the right side of the scan room.

c. Press the “Abort” button at the workstation computer console (outside the scan room).

d. Press the red button on the scanner to the right of the magnetic bore.

4. Before beginning to scan a subject, you should:

a. Give the subject earplugs.

b. Check lines of remote (from the workstation) verbal communication with the subject.

c. Make the subject take off his/her shoes.

d. Give the subject an emergency squeeze ball.

5. It is okay to carry non-magnetic metal into the scan room:

a. If the item is small.

b. If you keep a tight grip on the item.

c. If you don’t approach the magnetic bore too closely.

d. Only if the equipment is necessary for the experiment, must be placed inside the scan room, is placed at a safe distance, and you have permission to bring it inside.

6. Symptoms of asphyxiation include:

a. Dizziness

b. Convulsive movements.

c. Vomiting

d. Loss of consciousness.

7. If a subject experiences frostbite, you should:

a. Rub the affected area quickly to warm it back up.

b. Wrap the area up tightly in clothing/blankets.

c. Keep the person warm.

d. Get medical help.

8. The phantom:

a. Is a type of artifact.

b. Is filled with water.

c. Contains a salt solution.

d. Requires the use of gloves in the event of a spill.

9. Which of the following subjects are allowed to be scanned?

a. Someone with aluminum screws in his fingers.

b. Someone with tattoo on his chest.

c. A woman with an IUD or diaphragm.

d. A subject who has braces.

10. What are the potential consequences of scanning someone who has non-ferrous metal (implants, shrapnel, etc.) in his/her body?

a. The implant could be dislodged from its original location, causing tissue damage.

b. Metal detectors placed around the scan room will pick up the presence of metal and automatically cause the scan to abort.

c. There may be artifacts in the MR images.

d. The implant could cause excessive heating of surrounding tissue.

11. If a helium leak occurs while you are running a subject, you should:

a. Wait until a medical professional or MRI technician arrives before trying to retrieve your subject from the scan room.

b. In sequential order: Abort scan, press “Patient Systems Stop” button in scan room, rescue subject, call 911 and VA police, call Philips.

c. Break the scan-room window if you cannot enter through the door.

d. Stay low within the scan room.

12. Cryogens:

a. used by the Philips scanner can be detected visually or by scent when they are in gas form.

b. can leak into the scan room during venting of gases.

c. can displace oxygen in the scan room.

d. are necessary for superconductive magnets.

13. Quenching:

a. is performed by pressing the big red button on the scanner to the right of the magnetic bore (near couch buttons).

b. should be performed for extreme emergencies only.

c. enables the superconducting properties of the magnet.

d. should be used for a helium leak.

14. You should use the QA:

a. at the end of every scanning session.

b. to check coil temperatures.

c. with the phantom and head coil in place.

d. to check communication lines with subject.

15. The “Patient Systems Stop” button:

a. Is a red button located on the scanner, to the right of the magnetic bore.

b. In general, should be used to terminate scanning only if the “Abort” button at the workstation computer doesn’t work.

c. Can be used when the subject or patient must be quickly evacuated from the magnet.

d. Cuts off electrical power to some scanner components.

16. If a large magnetic object becomes lodged in the scanner, you should

a. Call other lab members to assist in pulling it out.

b. Call Philips to have the magnet ramped down.

c. Turn off the magnet by pressing the big red button on the right wall of the scan room.

d. Pull out the object without turning off the magnet.

17. What safety measures are required in order to perform fMRI scans at Martinez:

a. An abstract of the study must be posted on the web

b. Two trained investigators, one of which is a senior investigator, must be present

c. The investigators must sign in, both on the computer and in a sign-up book

d. All non-VA investigators must have WOC appointments and VA Human Subject Certification

e. Studies must have been approved by VA Human Subjects Committee, VA Scientific Review Committee, and VA RandD committee

18. Magnetic equipment used in conjunction with fMRI studies at Martinez:

a. Must not be taken into the scan room, except for necessary and approved equipment

b. Must be positioned in prespecified approved locations

c. Must never be stored with non-magnetic equipment

d. Must be marked with a red tag.

19. A reserved time-slot for an fMRI study at Martinez:

a. Can only be obtained by a senior investigator

b. Requires that studies have been approved by all relevant committees

c. Must be linked to an abstract describing the study

d. Cannot be obtained more than once per month

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