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MRI Sequences

Sequences acronyms

by Denis Hoa

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

T2-TFE

 

THRIVE

 

 

TurboFLASH

 

VIBE

FGRE

Fast SPGR

FMPSPGR

VIBRANT

FAME

LAVA
SARGE

 

 

Fast FE

 

RADIANCE

QUICK 3D

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