Portable objects on in Zone IV

Which definition best describes MRI Zone IV?. The public waiting area and hospital entrance. The patient dressing room and screening area. The computer control room where the technologist sits. The actual scanner room where the strong magnetic field is present.

The "projectile effect" (or missile effect) in Zone IV is primarily caused by: The heat generated by the radiofrequency coils. The static magnetic field (B0) attracts ferromagnetic objects. The loud acoustic noise vibrating small metal parts. The electrical power used to turn the magnet on and off.

Which of the following portable objects is considered "MR Safe"?. A standard stainless steel oxygen tank. An item made entirely of high-grade plastic or non-conductive material. A pair of surgical scissors kept in a pocket. A battery-powered floor buffer.

What must be done if a "MR Conditional" portable object is brought into Zone IV?. It can be used anywhere in the room without restrictions. It must be used only under the specific conditions (e.g., field strength) defined by the manufacturer. It must be tethered to the wall with a steel cable. It must be covered with a lead apron to block magnetism.

Even small portable objects like paperclips or hairpins can be dangerous in Zone IV because: They can interfere with the hospital's Wi-Fi. They can reach velocities of up to 40–60 mph when pulled toward the magnet. They cause the MRI room to lose oxygen. They make the images appear too bright to read.

Which of these is a temporary provision for "MR Unsafe" transport equipment (like a standard hospital journey)?. It may enter Zone IV if the patient is in a hurry. It may enter Zone IV if the wheels are locked. It is strictly prohibited from always entering Zone IV. It can enter if it stays at least 3 feet from the magnet.

Why are objects like "clipboards, stethoscopes, and keys" frequently involved in MRI accidents?. They are often "hidden" in pockets or overlooked during quick movements. They are too small for the magnetic field to notice. They are only magnetic when the scanner is actively taking pictures. They are specifically designed to be used in Zone IV.

When a "Code Blue" or medical emergency occurs in Zone IV, portable resuscitation equipment should: Be rushed into Zone IV immediately to save time. Be kept in Zone III or a designated safe area while the patient is moved out of Zone IV. Be used only if it is made of aluminum. D) Be plugged into the MRI machine for power.

What is the status of the magnetic field in Zone IV when the MRI scanner is not actively imagining a patient?. The magnet is off and the room is safe for all metal. The magnet is at "half power" to save electricity. The magnetic field is always on, 24 hours a day, 365 days a year. The magnet only turns on when the door is closed.

Before any portable object is introduced into Zone IV, who is ultimately responsible for clearing it?. The hospital's cleaning staff. The patient or their family members. Level 2 MR Personnel (e.g., the MRI Technologist). The manufacturer of the object.