Diagnostic performance in T staging for patients with esophagogastric junction cancer using high-resolution MRI: a comparison with conventional MRI at 3 tesla

Table 1 The main imaging parameters of MRI protocols

	Protocols	TR/TE (ms)	FOV (mm²)	Matrix	FA(°)	ST (mm)	Gap	Slices	FS	Averages	TA
HR MRI, Cohort 1	T2 W	6500/87	260*260	256*256	131	3	0.6	30	No	1	3.5–4.5 min
	DWI^a	2000/51	195*260	180*240	90	3	0.6	30	Yes	–	4–5 min
	T1W	4.23/1.13	175*280	160*256	12	3	0	28	Yes	3	16 s
	T1W + C^c	4.23/1/13	175*280	160*256	12	3	0	28	Yes	3	16 s
Conventional MRI, Cohort 2	T2 W	4560/79	380*380	320*320	140	6	1.2	28	Yes	1	3–4 min
	DWI^b	2200/55	296*395	96*128	90	6	1.2	20	Yes	–	31 s
	T1W	3.97/1.26	325*400	195*320	9	3	0	64	Yes	1	15 s
	T1W + C^c	3.46/1.32	308*380	195*320	12	3	0	64	Yes	1	14 s

FA flip angle, ST slice thickness, FS fat saturation, TA acquisition time
^ab values (number of averages), 50 (1), 100 (1), 150 (1), 200 (1), 500 (2), 800 (3) s/mm²
^bb values (Number of averages), 50 (1), 800 (3) s/mm²
^carterial, venous and delayed phases

ISSN: 1470-7330