What is the impact of the slew rate in MRI operations?

The concept of slew rate in MRI refers to the speed at which the gradient magnetic fields can be changed or turned on and off. It plays a critical role in influencing peripheral nerve stimulation (PNS). PNS occurs when rapidly changing magnetic fields induce currents in the nerves, which can lead to sensations such as tingling or muscle contractions.

When the slew rate is increased, the gradients can change more quickly, potentially enhancing imaging speed and resolution but also raising the likelihood of PNS. Therefore, managing the slew rate is essential to balance image quality with patient comfort and safety. While it may indirectly relate to imaging quality and slice thickness, its primary impact in this context revolves around its influence on PNS, making it the most relevant aspect of the question.

In summary, the slew rate's impact on PNS underlines the importance of understanding how gradient switching speeds affect not only the technical aspects of MRI imaging but also patient experiences during scans.