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Table 2 The scanners specifications and imaging parameters for the 3 T group

From: Assessment of the impact of the scanner-related factors on brain morphometry analysis with Brainvisa

Centre D E F G H
MR scanner GE 3 T HD GE 3 T HDx Siemens 3 T Tim Trio Siemens 3 T Tim Trio Philips 3 T Intera-Achieva
Head coil 8-channel 8-channel 8-channel 12-channel 8-channel
Acceleration factor No ASSET factor 2 No No SENSE factor 2
TR (ms) 6.5 7.0 9.0 9.4 8.2
TE (ms) 1.50 2.85 2.98 4.66 3.80
TI (ms) 500 650 900 900 885
Flip angle (°) 12 8 9 8 8
Image size (voxels) 260 × 260 × 160 260 × 260 × 160 256 × 256 × 160 256 × 256 × 160 256 × 256 × 160
Voxel size (mm3) 1.1 × 1.1 × 1 1.1 × 1 × 1 1 × 1 × 1 1 × 1 × 1 1 × 1 × 1
  1. TR, TE, and TI represent Repetition Time, Echo Time, and Inversion Time, respectively.