Table 1.

MRI parameters

Series description	3D T1w SPGR	2D ME SPGR
TR (ms)	2.9–5.6	150
TE (ms)	1.4—1.8	1.15, 2.3, 3.45, 4.6, 5.75, 6.9
Flip angle (degrees)	15	50
Receiver bandwidth (kHz)	125	166
Number of echoes	1	6
Matrix	320–384 × 224–256	288 × 224
Field of view (cm)	44	44
Slice thickness (mm)	2–4	6
Acceleration factor for parallel imaging	1	1.25
Breath-hold time	~20 s	~20 s

3D T1w SPGR, three-dimensional T1-weighted spoiled gradient-recalled-echo; 2D ME SPGR, two-dimensional multi-echo spoiled gradient-recalled-echo. The flip angle of 15° for 3D T1w SPGR was the maximum allowed by our scanner. The rectangular field of view was adjusted depending on the subject’s body habitus and breath-hold capacity