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. Author manuscript; available in PMC: 2016 Feb 15.
Published in final edited form as: Neuroimage. 2014 Dec 4;107:46–53. doi: 10.1016/j.neuroimage.2014.11.049

Table 1.

Summary of non-accelerated and accelerated MRI protocols for T1-weighted scans in ADNI-GO and ADNI-2.

Manufacturer TR/MPRAGE TR (ms) TE (ms) TI (ms) Flip angle (°) Slice thickness (mm) Acquired pixel dimensions (mm) Scan time (min:sec)
GE Non-accelerated 7.0 –7.7/na 2.8 – 3.2 400 11 1.20 1.02 × 1.02 9:41
Accelerated 7.0 –7.7/na 2.8 – 3.2 400 11 1.20 1.05 × 1.05 5:34
Philips Non-accelerated 6.8/2500 3.1 900 9 1.20 1.00 × 1.00 9:07
Accelerated 6.8/2500 3.1 900 9 1.20 1.11 × 1.11 5:34
Siemens Non-accelerated 7.1/2300 3.0 900 9 1.20 1.00 × 1.00 9:14
Accelerated 7.0/2300 3.0 900 9 1.20 1.05 × 1.05 5:12