MRI Safety

Study Notes

Cryogen is used in superconductive MR units to produce a strong magnetic field.
Helium is used to remove resistance in the wire and prevent heating.
Quenching is the process of releasing helium to turn off the magnet.
Quenching can cause issues like frostbite, pressure build-up, and disorientation.
The static magnetic field is a stationary magnetic field that must be uniform at Isocenter.
The fringe field is the magnetic field that extends outside the MR unit and can cause threats.
The magnetic spatial gradient is the gradient of magnetic field deterioration in the fringe field.
Translational force and rotational force are threats associated with the static magnetic field.
Ferrous objects can be attracted towards the MR unit due to these forces.
Electromagnets are used to reduce the risk of these forces.
The fringe field in an MRI room can cause ferrous objects to fly off and distort ECG readings.
Active shielding can reduce the magnetic spatial gradient in the room.
RF fields in an MRI can cause heating and burns to the patient.
SAR (watts per kilogram) is used to estimate the amount of energy the patient is absorbing from the RF field.
Proximity burns can occur when a patient's skin is in direct contact with the bore of the MRI machine.
Conductive loop burns can occur when there is skin-to-skin contact or a conductive pathway in the patient's body.
Resonant burns or antenna effects can occur when exposing MRA unsafe equipment or implants.
SAR limits are set to limit any risk to the patient.
Burns are the number one reported issue in MRI.
Measures can be taken to prevent or reduce the risk of burns in MRI, such as placing a barrier between the patient's skin and the bore, avoiding skin-to-skin contact, or using MRA safe equipment.
ECG leads can cause burns in MRI scans
ECG leads are not built for MRI
Burns can be second, third-degree or worse
Removing unsafe equipment reduces risk
Implants must be investigated for MRI safety
MRA conditions must be followed for patient safety
MRI exposes patients to strong magnetic fields
Heating up is a common issue in MRI scans
Patient safety is a top priority in MRI procedures
MRI equipment must be MRA safe.

Description

Test your knowledge on the safety measures and risks associated with MRI scans with this informative quiz. From the use of cryogen and helium to the potential threats of the static and fringe magnetic fields, this quiz covers it all. Learn about the importance of MRA safe equipment, SAR limits, and measures to prevent burns during MRI scans. Whether you're a medical professional or just curious about MRI safety, this quiz will provide valuable insights and information.