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Table 1 Summary of sequence parameters for the Siemens OAI protocol and optimized equivalent protocols for the GE and Philips 3.0T scanners

From: Comparison of 3T MR scanners in regional cartilage-thickness analysis in osteoarthritis: a cross-sectional multicenter, multivendor study

Vendor Siemens Philips GE
Sequence 3D DESS 3DWATSf 3D GE
Fat saturation/water excitation (WE) WE WE Fat sat
FOV (mm) 140 140 140
Number of slices 160 120 210
Slice thickness (mm) 0.7 0.7 1
Slice gap (mm) 0 0 -0.5
Flip angle (deg) 25 25 25
TE (ms) 4.7 9.2 4.9
TR (ms) 16.3 20 16.8
X-resolution (mm) 0.37 0.36 0.55
Y-resolution (mm) 0.46 0.48 0.62
Scan time 10 min 35 s 3 min 51 s 6 min 22 s
  1. D.ESS, dual-echo steady state; GE, gradient echo; WATSf, water selective (fluid).