Frequency dependent harmonics generation in iron oxide nanoparticles

We have demonstrated that MPI can work at drive field frequencies much higher than traditionally used frequencies, which has the potential to boost the signal to noise ratio. At such higher frequencies, however, the product of amplitude and frequency can become limiting for continuous operation due to patient heating. In this case, scan durations would have to be limited to maybe several 10 seconds which can still be sufficient for angiographic applications.