Given certain parameters, which has the lowest heating potential?

The choice indicating the lowest heating potential is primarily determined by the parameters of repetition time (TR), pulse duration, and flip angle.

In magnetic resonance imaging (MRI), the heating potential is influenced by the specific absorption rate (SAR), which is directly related to the flip angle and the pulse duration. The repetition time (TR) plays a crucial role in how often sequences are repeated and can affect overall energy deposition.

The correct answer reflects a scenario that balances these parameters effectively. A longer TR allows for more time between pulses, which reduces the heating effect because the tissue has time to dissipate any heat generated from the previous pulse. The TR of 2400 milliseconds in this option is the longest among the choices, which is beneficial for lowering heating potential.

Additionally, with a flip angle of 100 degrees and a pulse duration of 1 millisecond, this combination ensures that energy is applied in a manner that is not excessive, further mitigating the heating effect compared to other options. Higher flip angles or shorter TR values can lead to increased energy deposition and, consequently, higher temperature rises in tissue.

While other options involve shorter TRs and/or higher flip angles, which inherently lead to increased SAR and greater heating potential, the chosen answer strategically combines an optimal