Electrodynamics and ultimate SNR in parallel MR imaging.

  title={Electrodynamics and ultimate SNR in parallel MR imaging.},
  author={Florian Wiesinger and Peter Boesiger and Klaas P. Pruessmann},
  journal={Magnetic resonance in medicine},
  volume={52 2},
The purpose of this article is to elucidate inherent limitations to the performance of parallel MRI. The study focuses on the ultimate signal-to-noise ratio (SNR), which refers to the maximum SNR permitted by the electrodynamics of the signal detection process. Using a spherical model object, it is shown that the behavior of the ultimate SNR imposes distinct limits on the acceleration rate in parallel imaging. For low and moderate acceleration, the ultimate SNR performance is nearly optimal… CONTINUE READING