In-room imaging and MR planning

Parallel MRI considerations

8-channel; 3-fold

• Reduce the number of readout lines – Acceleration factor (R)

• Comes at a cost of SNR – Less Fourier averaging

• Image artefacts arise with high acceleration – SENSE/GRAPPA solution becomes ill-defined – Expressed as g-factor

SNR

full

SNR

=

SENSE

R g

map