MRI Safety for Non-MRI Personnel

One of the most critical points emphasized in the video is how often the powerful static magnetic field of an MRI system is active. What is the correct status of the magnet?. The magnet is only on when the computer is running a scan. The magnet is always on, 24 hours a day, 365 days a year. The magnet is turned off every night to save energy. The magnet is only on when a patient is inside the bore.

The strength of an MRI magnetic field is measured in units of Tesla. How does a typical 1.5 or 3.0 Tesla MRI compare to the Earth's magnetic field?. It is roughly equal to the Earth's magnetic field. It is about 100 times more powerful. It is 30,000 to 60,000 times more powerful. It is weaker than a common refrigerator magnet.

What term is used to describe the phenomenon where the magnetic field attracts metallic objects, causing them to fly toward the center of the scanner?. The Gravity Well Effect. The Missile Effect. The Static Pulse. Magnetic Drifting.

Which of these objects is specifically mentioned in the video as having caused a dangerous incident where it discharged a round after being attracted to the magnet?. A construction worker's nail gun. A firefighter's oxygen tank. A police officer's handgun. A heavy-duty floor buffer.

Before entering the MRI room, all individuals must undergo a screening process. What does this process typically involve?. Only a quick visual check by the receptionist. A written form and a verbal interview with safety-trained personnel. Passing through a standard airport-style metal detector only. Simply reading the danger signs posted on the door.

The video mentions specific medical implants that are strictly prohibited from entering the MRI environment. Which of the following is an example?. Dental fillings. Cardiac pacemakers or ICDs. Titanium hip replacements. Plastic sutures.

What should a custodian or maintenance worker be aware of when cleaning the area around an MRI machine?. Standard vacuum cleaners and floor buffers are safe if they are plugged in. cleaning supplies can only be used when the magnet is turned off for the weekend. Conventional cleaning equipment like floor buffers should not be brought into the MRI room. Dusting is the only task allowed in the MRI room.

In the event of an emergency (like a fire or medical crisis), what is the rule regarding entering the scanner room?. First responders should enter immediately to save lives. The magnet automatically turns off if an alarm sounds. Never enter without clearance and screening from an MRI staff member. Only firefighters are exempt from the screening process.

Besides being pulled toward the magnet, what is another risk for electronic items like cell phones and analog watches in the MRI environment?. They may lose their battery charge instantly. They can be permanently damaged by the magnetic field. The phone's screen will become blurry for a few hours. They will emit dangerous levels of radiation.

What is "The Fringe Field" as described in the video?. The area where the MRI images are stored on the server. The magnetic field that extends out from the scanner in all directions. The edge of the patient table. The protective lead lining in the walls.