The reduction in scan time and signal readout provided by parallel techniques harbors several advantages:

  • reduced acquisition time, shorter breath-holds
  • reduced artifacts, namely in echo-planar sequences (figure 9.5)
  • better temporal resolution in perfusion imaging, functional imaging and dynamic imaging of movements.

Multiplying the measurements taken by the different coil elements in phased array also serves to:

  • enhance spatial resolution
  • increase the signal–to-noise ratio
  • improve spectral resolution
  • reduce flow and motion artifacts by averaging