MRI sequences acronyms

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

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Sequences