Table 4

Guide to MS-SMART MRI scan parameters for use as reference in dummy run scan for each site according to scanner model

ScanDual echo PD/T2-weighted FSE/TSET2-weighted FLAIRT1-weighted SE3D T1-weighted volumetric MPRAGE/IRFSPGR/TFE
Slice orientationAxial-obliqueAxial-obliqueAxial-obliqueSagittal-oblique
First TE Siemens 1.5 T/3 T11/26 ms122/100 ms12/6.8 ms3.45/4 ms
First TE GE 1.5 T/3 T21/24 ms128/127 ms20/20 ms5/3 ms
First TE Philips 1.5 T/3 T16/13 ms120/120 ms20/10 ms4/3.2 ms
Second TE Siemens 1.5 T/3 T86/97 msNANANA
SecondTE GE 1.5 T/3 T86/85 ms
Second TE Philips 1.5 T/3 T100/90 ms
TR Siemens 1.5 T/3 T2680/2700 ms9500/9500 ms518/600 ms2400/2400 ms
TR GE 1.5 T/3 T2900/2600 ms10000/9500 ms650/700 ms13/8 ms
TR Philips 1.5 T/3 T3300/2900 ms10000/9500 ms600/600 ms12/6.9 ms
TI Siemens 1.5 T/3 TNA2400/2400 msNA1000/1000 ms
GE 1.5 T/3 T2200/2400 ms650/450 ms
Philips 1.5 T/3 T2400/2400 ms950/830 ms
Number of slices≥46≥46≥46≥176
Slice thickness 3 mm 3 mm 3 mm 1 mm
Slice gap 0 mm 0 mm 0 mm 0 mm
Echo train length Siemens 1.5 T/3 T7/519/15NANA
Echo train length GE 1.5 T/3 T10/819/19
Echo train length Philips 1.5 T/3 T5/619/19
Field of view25 cmx100%25 cmx100%25 cmx100%25 cmx100%
Image matrix acquisition256×256256×192256×256256×256
Image matrix reconstruction256×256256×256256×256256×256
Reconstructed pixel size0.9760.9760.9760.976
Frequency encodinga/pa/pa/ps/i
Phase encodingr/lr/lr/la/p
No. of averages (excitations) 1.5 T/3 T1 January1 January1 February1 January
Flip angle Siemens
Flip angle GE20°
Flip angle Philips
  • Reference parameters guidance depending on scanner model (ie, Siemens, Philips, GE) and operating field strength (ie, 1.5 T or 3 T). The values listed in bold are mandatory for all of the sites.

  • a/p, anterior/posterior; FLAIR, fluid attenuated inversion recovery; FSE/TSE, fast/turbo spin echo; IRFSPGR, inversion recovery fast spoiled gradient echo; MPRAGE, magnetisation prepared rapid gradient echo; NA, not applicable; r/l, right/left; SE, spin echo; s/i, superior/inferior; TFE, turbo field echo.