Risks of RF-induced heating can be minimized by which of the following measures?

The minimization of risks associated with RF-induced heating is significantly impacted by the field strength of the MRI machine. Using a lower field strength MRI is an effective measure because higher field strengths typically result in increased RF power deposition in the tissues. This elevation in energy can lead to greater heating effects during scans.

Lowering the field strength reduces the overall energy output, thereby decreasing the potential for RF-induced heating in the patient. This is particularly relevant when considering safety protocols for patients with implants or other conditions that might increase susceptibility to heating. It's crucial to balance the need for image quality with the safety of the patient, and a lower field strength can support that balance by limiting the risk of overheating during the MRI procedure.

Other measures like reducing patient movement, employing a larger RF coil, and positioning patients further from the magnet do not directly address the fundamental relationship between RF energy deposition and magnetic field strength in terms of heating. While they may contribute to overall safety and comfort during the procedure, they do not specifically minimize RF-induced heating as effectively as adjusting the field strength does.