MRI Physics - Chapter 10 MRI Safety
Questions and Answers Already Passed
Why are pregnant MRI workers advised to limit their time near the scanner?
✔✔ To minimize potential risks from the magnetic field and RF exposure
What should be done if a patient with an unknown implant needs an MRI?
✔✔ Consult the implant manufacturer and follow MRI safety guidelines
Why must an MRI room have a controlled access policy?
✔✔ To prevent unauthorized individuals from entering and being exposed to hazards
What type of fire extinguisher should be used in an MRI environment?
✔✔ A non-ferromagnetic extinguisher designed for MRI safety
Why should oxygen tanks never be brought into the MRI scan room?
✔✔ They are ferromagnetic and can be pulled into the magnet, causing serious injury
1
,What is the role of the MRI safety officer?
✔✔ To ensure compliance with safety protocols and educate staff on risks
Why should patients remove transdermal medication patches before an MRI?
✔✔ Some patches contain metal that can heat up and cause burns
What should be done if a patient has a history of metal fragments in their body?
✔✔ Perform additional screening, such as X-rays, to confirm safety
Why must hospital beds, IV poles, and wheelchairs be checked before entering the MRI suite?
✔✔ Only non-magnetic equipment should be used to prevent accidents
What is the term for the area where the magnetic field strength is strong enough to pose risks?
✔✔ The 5-gauss line
What is the primary safety concern related to the static magnetic field in MRI?
✔✔ The risk of projectile hazards from ferromagnetic objects
2
, Why must all metallic implants be evaluated before an MRI scan?
✔✔ To prevent movement, heating, or interference with imaging
What should a patient do if they experience discomfort during an MRI scan?
✔✔ Inform the MRI technologist immediately using the call button
Why is it important to screen all individuals before entering the MRI room?
✔✔ To prevent injuries from metal objects or implants interacting with the magnetic field
What is the function of radiofrequency shielding in an MRI suite?
✔✔ To prevent external RF interference and ensure image quality
Why is hearing protection necessary for MRI patients?
✔✔ The scanner produces loud noises that could cause hearing damage
What is the primary risk of wearing metal jewelry during an MRI scan?
✔✔ It can become a projectile or cause burns due to RF heating
3
Questions and Answers Already Passed
Why are pregnant MRI workers advised to limit their time near the scanner?
✔✔ To minimize potential risks from the magnetic field and RF exposure
What should be done if a patient with an unknown implant needs an MRI?
✔✔ Consult the implant manufacturer and follow MRI safety guidelines
Why must an MRI room have a controlled access policy?
✔✔ To prevent unauthorized individuals from entering and being exposed to hazards
What type of fire extinguisher should be used in an MRI environment?
✔✔ A non-ferromagnetic extinguisher designed for MRI safety
Why should oxygen tanks never be brought into the MRI scan room?
✔✔ They are ferromagnetic and can be pulled into the magnet, causing serious injury
1
,What is the role of the MRI safety officer?
✔✔ To ensure compliance with safety protocols and educate staff on risks
Why should patients remove transdermal medication patches before an MRI?
✔✔ Some patches contain metal that can heat up and cause burns
What should be done if a patient has a history of metal fragments in their body?
✔✔ Perform additional screening, such as X-rays, to confirm safety
Why must hospital beds, IV poles, and wheelchairs be checked before entering the MRI suite?
✔✔ Only non-magnetic equipment should be used to prevent accidents
What is the term for the area where the magnetic field strength is strong enough to pose risks?
✔✔ The 5-gauss line
What is the primary safety concern related to the static magnetic field in MRI?
✔✔ The risk of projectile hazards from ferromagnetic objects
2
, Why must all metallic implants be evaluated before an MRI scan?
✔✔ To prevent movement, heating, or interference with imaging
What should a patient do if they experience discomfort during an MRI scan?
✔✔ Inform the MRI technologist immediately using the call button
Why is it important to screen all individuals before entering the MRI room?
✔✔ To prevent injuries from metal objects or implants interacting with the magnetic field
What is the function of radiofrequency shielding in an MRI suite?
✔✔ To prevent external RF interference and ensure image quality
Why is hearing protection necessary for MRI patients?
✔✔ The scanner produces loud noises that could cause hearing damage
What is the primary risk of wearing metal jewelry during an MRI scan?
✔✔ It can become a projectile or cause burns due to RF heating
3
