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Table 1 MRI sequence parameters used in this study. The dual-acquisition gradient echo (GRE) sequence was used for field mapping and the T2 images were acquired for delineation of the organs. x, y and z indicate the axes in the left-right, anterior-posterior and superior-inferior directions respectively

From: Per-organ assessment of subject-induced susceptibility distortion for MR-only male pelvis treatment planning

Field Strength (T) Sequence Acquisition
ΔVx/ΔVy/ΔVz
(mm)
Bandwidth (Hz/pixel) α TR (ms) TE1(ms) TE2(ms) FOV (mm) Turbo Factor
1.0 GRE 1.41/1.41/3 975 10° 15.87 6.91 13.81 474.19 × 474.19 × 300
T2 1.49/1.6/2.5 202 90° 5070 80 397.89 × 397.89 × 250 24
1.5 GRE 2.9/2.9/4 543 10° 11.19 4.61 9.22 416.90 × 416.90 × 200
T2 0.96/0.96/2.5 207 90 4620 100 180 × 180 × 84 17
3.0 GRE 2.9/2.9/4 1078 10° 2.30 2.30 4.61 416.90 × 416.90 × 200
T2 0.96/0.96/2.5 218 90° 4295 100 180 × 180 × 84 17