Table 1. Technical parameters of MR sequences used in study.
A coronal 3D VIBE | Axial and coronal HASTE | An axial SS- SE- EPI DWI | |
---|---|---|---|
TR | 3.6 ms | 1000 ms | 7700 ms |
TE | TE1 1.23 ms, TE2 2.46 ms | 67 ms | 75 ms |
slice thickness | 3.12 mm | 4 mm | 6 mm |
matrix size | 172 × 172 | 180 × 320 | 83 × 128 |
FOV | 500 mm | 400 mm | 380 mm |
GRAPPA acceleration factor | 2 | 2 | 2 |
protocol time | 0:19 | 0:54 | 2:42 |
others | Dixon-based attenuation correction | free-breathing, delineation of anatomy and gross pathology | free-breathing, b-values 50, 400 and 800 s/mm2 |
3D VIBE, three-dimensional volume-interpolated breath-hold examination; HASTE, half-Fourier acquisition single-shot turbo spin-echo; SS, single-shot; SE, spin echo; EPI, echo planar imaging; DWI, diffusion weighted imaging; TR, repetition time; TE, echo time; FOV, field of view; GRAPPA, generalized auto-calibrating partially parallel acquisition