Handbook of MRI Technique. Catherine Westbrook

2.1 Summary of parameters.

      Source: Catherine Westbrook and John Talbot, MRI in Practice, 5th ed., John Wiley & Sons, 2019.

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1.5 T	3T
CSE			CSE
Short TE	Minimum–30 ms	Short TE	Minimum–15 ms
Long TE	70 ms+	Long TE	70 ms+
Short TR	300–700 ms	Short TR	400–800 ms
Long TR	2000 ms+	Long TR	2500 ms+
FSE/TSE		FSE/TSE
Short TE	Minimum – 20 ms	Short TE	Minimum–15 ms
Long TE	90 ms+	Long TE	90 ms+
Short TR	400–600 ms	Short TR	400–600 ms
Long TR	4000 ms+	Long TR	4000 ms+
Short ETL/TF	2–6	Short ETL/TF	2–6
Long ETL/TF	20+	Long ETL/TF	20+
IR T1		IR T1
Short TE	Minimum–20 ms	Short TE	Minimum–20 ms
Long TR	3000 ms+	Long TR	3500 ms+
TI	Short or null time of tissue	TI	Short or null time of tissue
Short ETL/TF	2–6	Short ETL/TF	2–6
STIR		STIR
Long TE	60 ms+	Long TE	60 ms+
Long TR	3000 ms+	Long TR	3000 ms+
Short TI	100–175 ms	Short TI	210 ms
Long ETL/TF	20+	Long ETL/TF	20+
FLAIR		FLAIR
Long TE	80 ms+	Long TE	80 ms+
Long TR	At least 4× TI	Long TR	At least 4× TI
Long TI	1700–2500 ms	Long TI	1700–2500 ms
Long ETL/TF	20+	Long ETL/TF	20+
Rewound GRE		Rewound GRE
Long TE	10–15 ms	Long TE	10–15 ms
Short TR	<50 ms	Short TR	<50 ms
Flip angle	30° to 45°	Flip angle	30° to 45°
Spoiled GRE		Spoiled GRE
Short TE	Minimum	Short TE	Minimum
Short TR	<50 ms	Short TR	<50 ms
Flip angle	30° to 45°	Flip angle	30° to 45°