RARE/turbo spin echo imaging with Simultaneous Multislice Wave-CAIPI.

ABSTRACT:

Purpose

To enable highly accelerated RARE/Turbo Spin Echo (TSE) imaging using Simultaneous MultiSlice (SMS) Wave-CAIPI acquisition with reduced g-factor penalty.

Methods

SMS Wave-CAIPI incurs slice shifts across simultaneously excited slices while playing sinusoidal gradient waveforms during the readout of each encoding line. This results in an efficient k-space coverage that spreads aliasing in all three dimensions to fully harness the encoding power of coil sensitivities. The novel MultiPINS radiofrequency (RF) pulses dramatically reduce the power deposition of multiband (MB) refocusing pulse, thus allowing high MB factors within the Specific Absorption Rate (SAR) limit.

Results

Wave-CAIPI acquisition with MultiPINS permits whole brain coverage with 1 mm isotropic r

SUBMITTER: Gagoski BA 

PROVIDER: S-EPMC4334698 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature