Which set of parameters would promote the most Peripheral Nervous System (PNS) stimulation?

The correct choice is the one that optimally balances all three parameters: rise time, duty cycle, and maximum gradient. In the context of Peripheral Nervous System (PNS) stimulation, faster rise times and higher maximum gradients are significant factors that influence stimulation.

In this scenario, the choice with a rise time of 0.2 ms allows for quicker changes in magnetic field gradients, which can lead to more effective nerve stimulation. A duty cycle of 0.2 ms reflects how long the gradient is applied relative to the time it's off, which is also essential for maintaining effective stimulation duration without overwhelming the system. The maximum gradient of 35 mT/m, while not the highest among the options, is still substantial enough to induce stimulation without causing excessive discomfort.

The overall combination of these parameters in the correct choice provides a conducive environment for increasing the likelihood of PNS stimulation without exceeding threshold levels where the patient’s safety may be compromised. Therefore, this combination is seen as optimal for achieving the desired stimulation effect while adhering to safety guidelines.