Which term best describes the safety status of an item with a deflection angle exceeding 45 degrees?

The term that best describes the safety status of an item with a deflection angle exceeding 45 degrees is "MR Unsafe." Items classified as MR Unsafe are those that pose a significant risk to patient safety within the magnetic resonance environment. A deflection angle exceeding 45 degrees indicates that the item likely contains materials that are ferromagnetic and can be dangerously attracted to the MRI magnet, leading to potentially severe injuries or equipment damage.

Understanding the safety classifications is crucial for preventing accidents in the MRI suite. Items labeled as MR Safe pose no risk, MR Conditional items have specific conditions under which they can be safely used, and MR Potential may describe items that are not explicitly categorized but could present some risks. However, once the deflection angle exceeds the threshold of 45 degrees, it clearly indicates a level of risk that is unacceptable in the MRI setting, thereby justifying the classification of MR Unsafe.