Impact of field strength and RF excitation on abdominal diffusion-weighted magnetic resonance imaging

Table 1 Imaging parameters in the three imaging systems used for the patient population

	1.5T MR	non-dpTX 3.0T MR	dpTX 3.0T MR
TR/TE, ms	5600/75	6000/76	6400/63
Sequence type	EPI-SE	EPI-SE	EPI-SE
FOV, mm × mm	380 × 308	380 × 308	380 × 308
Matrix	192 × 156	192 × 156	192 × 156
Slice thickness, mm	6	5	5
Interslice gap, mm	0	0	0
Spatial resolution, mm³	2.0 × 2.0 × 6.0	2.0 × 2.0 × 5.0	2.0 × 2.0 × 5.0
Number slices	32	33	35
b-values	50, 400, 800	50, 400, 800	50, 400, 800
Parallel imaging	GRAPPA 2	GRAPPA 2	GRAPPA 2
Acquisition time, min	4:30	5:06	4:46
Respiratory control	Free breathing	Free breathing	Free breathing
Fat suppression	SPAIR	SPAIR	SPAIR
Averages	4	4	3
Bandwidth, Hz/px	1736	1736	1736

MR: Magnetic resonance.