Table 1:

MRI systems and MRI acquisition parameters across the four sites.

Site	Scanner #	Vendor			Field Strength (T)		Model
I	1	GE			1.5		Optima MR450w
	2	GE			3		Discovery MR750
II	1	Siemens			3		MAGNETOM Skyra
III	1	Siemens			1.5		MAGNETOM Aera
	2	Siemens			3		MAGNETOM Skyra
IV	1	Philips			1.5		Ingenia 1.5T
	2	Philips			3		Ingenia 3.0T
MRI Acquisition Parameters
Sequence			3D SGRE			Flip angle		5° (1.5T)		3° (3T)
Echo number			6			Slice thickness		3 mm
FOV			20×20 cm2			Matrix		130×130×10
Echo train (GE)			1 (1.5T)	2 (3T)		ETL (GE)		6 (1.5T)	3 (3T)
Echo train (Siemens)			1 (1.5T)	2 (3T)		ETL (Siemens)		6 (1.5T)	3 (3T)
Echo train (Philips)			1 (1.5T and 3T)			ETL (Philips)		6 (1.5T and 3T)

Note: ETL, echo train length.