Free MRSO ASTM F2503 Device Labeling Questions and Answers

Question 1

What does the ASTM F2503 'MR Unsafe' symbol, a red circle with a diagonal line over a magnet, signify?

Accepted Answer

The device poses a known hazard in all MR environments

Answer

This symbol represents 'MR Unsafe.' It indicates that the item poses known and significant hazards in all MR environments due to factors like strong ferromagnetic attraction. Such items must never be brought into the MR scanner room (Zone IV).

Question 2

An infusion pump is labeled 'MR Conditional.' What is the most important action an MRSO must take before allowing it into the magnet room?

Accepted Answer

Verify the specific conditions of use from the manufacturer's labeling/IFU

Answer

The 'MR Conditional' label signifies that the device is safe only when a specific set of conditions are met. These conditions, which can include field strength, spatial gradient, and physical placement, must be found in the manufacturer's Instructions For Use (IFU) and strictly followed.

Question 3

Which of the following items would most likely be labeled 'MR Safe'?

Accepted Answer

A non-ferromagnetic, non-conductive plastic basin

Answer

An item is designated 'MR Safe' if it poses no known hazards in any MR environment. This applies to items that are entirely non-metallic, non-electrically conductive, and non-RF reactive. A plastic basin perfectly fits this description.

Question 4

The labeling for an 'MR Conditional' patient monitor specifies 'For use at 1.5T only, must be placed outside the 100 Gauss line.' What does this mean for a 3.0T facility?

Accepted Answer

The monitor must not be brought into the 3.0T magnet room

Answer

The conditions of use are specific and not transferable between different MR systems or field strengths. If a device is explicitly rated for 1.5T only, it is considered MR Unsafe in a 3.0T environment and must not be brought into the 3.0T magnet room.

Question 5

An unmarked, metallic tool is found in a clinical area. How should it be treated with respect to MR safety?

Accepted Answer

It must be assumed to be MR Unsafe until proven otherwise

Answer

A fundamental principle of MR safety is that any unknown or unlabeled metallic item must be presumed to be ferromagnetic and therefore MR Unsafe. It should not be brought into the controlled access areas (Zones III or IV) until its safety status can be definitively confirmed by appropriate testing.

MRSO - Magnetic Resonance Safety Officer Practice Test

MRSO - Magnetic Resonance Safety Officer Practice Test

Free MRSO ASTM F2503 Device Labeling Questions and Answers