MRI Safety - SMRT Training for the Staff in the MRI Environment

Which of the following is NOT one of the three magnetic fields used to generate an MRI image?. Static magnetic field. Radiofrequency (RF) magnetic field. Gradient magnetic field. Ionizing radiation field.

A 3 Tesla MRI magnet is approximately how much stronger than the Earth's natural magnetic field?. 6,000 times. 60,000 times. 600,000 times. 6,000,000 times.

In the "Four Zone" safety design, which zone contains the MRI scanner itself and has the most restricted access?. Zone 1. Zone 2. Zone 3. Zone 4.

What is the "Five Gauss Line" generally considered to be?. What is the "Five Gauss Line" generally considered to be?. The line where it is unsafe for unscreened individuals to pass. The maximum depth of the MRI bore. The volume setting for the intercom.

What is the primary safety risk associated with the radiofrequency (RF) magnetic field?. The projectile or missile effect. Peripheral nerve stimulation (twitching). Tissue heating and potential thermal burns. Immediate hearing loss from acoustic noise.

When screening a patient about implants, which phrasing is recommended by the video for better safety?. "Do you have an implant right now?". "Are you currently wearing any metal?". "Have you ever had an implant or device inside of you?". "Is there anything in your pockets?".

Why must all people in the scanner room during a scanning wear hearing protection (e.g., earplugs or headphones)?. To hear the technologist better. To prevent hearing loss from acoustic noise levels that can exceed 85 decibels. To keep their head still during the exam. To prevent the liquid helium from entering the ears.

Which MRI safety category label describes an item that is safe for MRI only under very specific, documented conditions?. MR Safe (Green Square). MR Conditional (Yellow Triangle). MR Unsafe (Red Circle). MR Compatible (Blue Star).

In a medical emergency (like a cardiac arrest), where should the resuscitation/CPR ideally be performed?. Directly inside the MRI scanner bore. On the floor of the MRI scan room (Zone 4). After removing the patient to a designated area outside the scan room (Zone 3 or 2). Only after the magnet has been quenched.

What is a "Quench" in a superconducting MRI system?. The process of cleaning the scanner with liquid nitrogen. A rapid release of liquid helium gas that causes a sudden loss of the static magnetic field. A software update that improves image quality. The automatic locking of the scan room doors.