Table 1.

Overview of the MRI Acquisition Characteristics in the Different Studies at UHF that Focuses on Hippocampal Subfield Segmentation

MRI studies at UHF	Field strength (T)	Coil	MRI	Weighting	Native resolution (mm3)	TR (ms)	TE (ms)	Flip angle	Total acquisition time
In vivo
Chupin et al., 2009	7.0	16‐ch head	TSE	T2	0.612 × 0.612 × 1.2 0.612 × 0.612 × 1.1 0.5 × 0.5 × 1.3	4000	77	60°	8 min
Cho et al., 2010	7.0	Multichannel	Spoiled FLASH	T2*	0.35 × 0.35 × 0.35	50	25	10°	14 min 27 s
Wisse et al., 2012, 2014a	7.0	16‐channel	TSE	T2	0.7 × 0.7 × 0.7	3158	467	120°	10–15 min
Wisse et al., 2016a, 2016b	7.0	32‐channel	TSE	T2	0.7 × 0.7 × 0.7	3158	301	120°	10 min 14 s
				T1	1.0 × 1.0 × 1.0	4.8	2.2		1 min 57 s
Boutet et al., 2014	7.0	8‐channel	GRE	${\mathrm{T}}_2^{\ast }$	0.3 × 0.3 × 1.2	742	16.41‐33.22	65°
Parekh et al., 2015	7.0	32‐channel	3D FIESTA		0.4 × 0.4 × 0.4	8.2	4.1	25°	40 min
Suthana et al., 2015	7.0	24‐channel	TSE		0.35 × 0.35 × 2	4800	22
Santyr et al., 2016	7.0	16‐channel	Multi echo		0.5 × 0.5 × 1.5	40	4.57	13°	12 min
Kerchner et al., 2010	7.0	8‐channel	GRE	${\mathrm{T}}_2^{\ast }$	0.195 × 0.195 × 2	250	15	20°	9.6 min
Kerchner et al., 2012	7.0	16‐channel	FSE	T2	0.22 × 0.22 × 1.5	5000–6000	49	90°	10 min
Retico et al., 2016	7.0	2ch‐Tx/32ch‐Rx head coil	GRE	${\mathrm{T}}_2^{\ast }$	0.3 × 0.3 × 2	240	22
Ex vivo
Yushkevich et al., 2009	9.4	Volume	SE		0.20 × 0.30 × 0.2	4000–5000	26		793‐933 min
Coras et al., 2014	7.0	Shielded gradient/shim coil Transmit/receive Birdcage	2D‐3D T2wi	T2
			DTI‐EPI
Apostolova et al., 2015	7.0	16‐ch head			0.125 × 0.125 × 0.125	1000	80.3	180°	60 h
Iglesias et al., 2015	7.0	Solenoid; 4‐channel phased array; small bircage	3D FLASH		0.1 × 0.1 × 0.1 0.2 × 0.2 × 0.2	50	25	20°
Wisse et al., 2016b	9.4		SE	T2	0.2 × 0.2 × 0.2	4000	21‐22		13:30‐15:52 h
					0.4 × 0.4 × 2.6	856.72–988.72	17.82		2:29‐2:31 min
					0.4 × 0.4 × 2.6	4000	35		35:14 min

Where no information are reported it means that it was not available in the corresponding reference.