EPTI sequence
EPTI sequences are freely available upon request at MGH-C2P Website or through the Siemens teamplay C2P exchange.
2D EPTI sequence (including single-shot and multi-shot):
Sequence details: single-shot and multi-shot EPTI, 2D excitation, with SMS capability, 3T and 7T.
Image contrast: multi-echo gradient echo (e.g., multi-echo fMRI), and/or spin-echo and asymmetric spin-echo (e.g., spin-echo fMRI, T2*/T2 mapping, DCE/DSC).
Siemens sequence software versions:
Siemens 3T (VE11C, VE11E) and 7T (VE12U) platforms.
We are developing the sequence on the XA platform, and will release XA30 soon, XA60/XA61 later.Example protocols for different applications are provided in the C2P packages.
Version note:
_v202506 (current version): Fixed an issue: signal fluctuation in certain slice groups caused by RF spoiling in the fat-saturation module. Important note: Please turn off the 'RF spoiling' in the special card (part 2) after updating the sequence or in the default protocol. [up-to-date recon code]
_v202309 : Updated reconstruction with coil-by-coil shot-to-shot phase correction for multi-shot EPTI (better temporal stability).
_v202308 : Optimized reconstruction code for 3T GESE protocol 3 and 6, fixed minor bugs in GESE and EPTI-customized bart files.
_v202307 : Added 2 GESE protocols for 3T; updated reconstruction with shot-to-shot phase correction for multi-shot EPTI.
_v202306 : Initial version
Pulseq EPTI:
We are developing EPTI on the vendor-agnostic Pulseq to support more platforms, and will share it in the future.