Due to manufacturers each using their own terminology to denominate their sequences, there are no standard denominations for each common type of sequence.
Here is a table of the equivalent manufacturers’ acronyms with the corresponding type of sequence.
Type of sequence | Philips | Siemens | GE | Hitachi | Toshiba |
Spin Echo (SE) | SE | SE | SE | SE | SE |
Multi echo SE | Multi SE |
Multi écho MS |
SE | SE | Multi écho |
Fast SE | Turbo SE | Turbo SE | Fast SE | Fast SE | Fast SE |
Ultra fast SE |
SSH-TSE UFSE |
SSTSE HASTE |
SS-FSE | FSE - ADA |
(Super)FASE DIET |
IR |
IR IR TSE |
IR/IRM TurboIR/TIRM |
IR FSE-IR |
IR FIR |
IR Fast IR |
STIR |
STIR STIR TSE |
STIR Turbo STIR |
STIR Fast STIR |
STIR Fast STIR |
STIR Fast STIR |
FLAIR |
FLAIR FLAIR TSE |
FLAIR Turbo FLAIR |
FLAIR Fast FLAIR |
FLAIR Fast FLAIR |
FLAIR Fast FLAIR |
Gradient echo (GE) | FFE | GRE | GRE | GE | FE |
Spoiled GE | T1-FFE | FLASH |
SPGR MPSPGR |
RSSG | RF-spoiled FE |
Ultra fast GE |
T1-TFE
THRIVE |
TurboFLASH
VIBE |
FGRE Fast SPGR FMPSPGR VIBRANT FAME LAVA |
SARGE |
Fast FE
RADIANCE |
Ultrafast GE with magnetization preparation | IR-TFE | T1/T2-TurboFLASH |
IR-FSPGR DE-FSPGR |
Fast FE | |
Steady state GE | FFE | FISP | MPGR, GRE | TRSG | FE |
Contrast enhanced steady state GE | T2-FFE T2 | PSIF | SSFP | FE | |
Balanced GE |
Balanced FFE |
True FISP | FIESTA | BASG | True SSFP |
SE-Echo planar | SE-EPI | EPI SE | SE EPI | SE EPI | SE EPI |
GE-Echo planar |
FFE-EPI TFE-EPI |
EPI Perf EPIFI |
GRE EPI | SG-EPI | FE-EPI |
Hybrid echo | GRASE | TGSE | Hybrid EPI |