Table 3 Overview of MRI pulse sequences and key imaging parameters.

From: Handling missing MRI sequences in deep learning segmentation of brain metastases: a multicenter study

Technique 3D T1 BRAVO Pre/Post 3D T1 CUBE/SPACE 3D FLAIR
Hospital A data
TR (ms)a 12.02/8.24 550/602 6000
TE (ms)a 5.05/3.24 9.54/12.72 119/136
Flip anglea 20/13 90 90
FOV (mm2) 240 × 240 250 × 250 240 × 240
Inversion time (ms)a 300/400 1880/1700
Acquisition matrix 256 × 256 256 × 256 256 × 256
Slice thickness (mm) 1 1 1–1.6
# of slices 160 270–320 270–320
Slice acquisition plane Axial Sagittal Sagittal
Hospital B datab
TR (ms) 700 5000
TE (ms) 12 387
Flip angle 120 120
FOV (mm2) 230 × 230 230 × 230
Inversion time (ms) 1800
Acquisition matrix 256 × 256 256 × 256
Slice thickness (mm) 0.9 0.9
# of slices 192 208
Slice acquisition plane Sagittal Sagittal
  1. TR repetition time, TE echo time, FOV field-of-view, BRAVO-T1-weighted inversion recovery prepped fast spoiled gradient-echo, CUBE/SPACE-T1-weighted fast spin-echo, FLAIR fluid attenuated inversion recovery.
  2. aIn case of varying parametric values between field strength,“/” notation is given (1.5 T/3 T).
  3. bNote that the Hospital B data is missing 3D T1 BRAVO images.