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Table 2: Imaging parameters of standard DWI
Standard DWI on 1.5T MRI Standard DWI on 3T MRI
Sequence type sshot SE-EPI sshot SE-EPI
Slice orientation Transversal Transversal
FOV (RL × AP) 230 × 230 mm² 230 × 230 mm²
Acquisition voxel size (RL × AP × FH) 1.4 × 2.0 × 3.0 mm³ 1.55 × 1.95 × 3.0 mm³
No. of slices 47 50
TR 6642 ms 6224 ms
TE 97 ms 85 ms
Flip angle 90° 90°
Sensitivity encoding factor 2 2
Half scan factor 0.8 No
Bandwidth 16.6 Hz/pixel 20.7 Hz/pixel
EPI factor 57 59
No. of signal averages 1 1
Acquisition duration (minutes:seconds) 02:16 01:52
Fat suppression SPIR SPIR
b-values 0, 1000 s/mm² 0, 1000 s/mm²
Note:—SPIR indicates spectral presaturation with inversion recovery; RL, right left; AP, anterior posterior; FH, feet head.

	Standard DWI on 1.5T MRI	Standard DWI on 3T MRI
Sequence type	sshot SE-EPI	sshot SE-EPI
Slice orientation	Transversal	Transversal
FOV (RL × AP)	230 × 230 mm²	230 × 230 mm²
Acquisition voxel size (RL × AP × FH)	1.4 × 2.0 × 3.0 mm³	1.55 × 1.95 × 3.0 mm³
No. of slices	47	50
TR	6642 ms	6224 ms
TE	97 ms	85 ms
Flip angle	90°	90°
Sensitivity encoding factor	2	2
Half scan factor	0.8	No
Bandwidth	16.6 Hz/pixel	20.7 Hz/pixel
EPI factor	57	59
No. of signal averages	1	1
Acquisition duration (minutes:seconds)	02:16	01:52
Fat suppression	SPIR	SPIR
b-values	0, 1000 s/mm²	0, 1000 s/mm²