Which of the following has the highest risk when scanning an MR cervical spine at 1.5T?

The highest risk when scanning a cervical spine at 1.5T is associated with metal in the patient's eye. This is largely due to the fact that the eyes are in close proximity to the magnetic field and the high-intensity magnetic forces present during an MRI scan. If there are any ferromagnetic materials in or near the eye, they could become dislodged, leading to serious injury or even blindness. The potential for acute injury is significant because the eyes are more delicate tissues and any movement or heating associated with the magnetic field could have serious consequences.

While other items like staples, a cardiac stent, or an MR Conditional brain aneurysm clip also present some degree of risk, their implications are typically more manageable with standard safety protocols. For example, staples are often made from materials that are non-ferrous or minimally affected by the magnetic field. Cardiac stents are usually designed to be MRI-safe or compatible, and if they are confirmed as MR Conditional, they may be scanned under specific circumstances without significant risk. Similarly, MR Conditional brain aneurysm clips are designed to be used safely in MRI environments if proper conditions are met.

In contrast, the risks associated with metal in the eye are immediate and potentially catastrophic, making it the priority for