Table 1. Parameters of T1-Weighted MR Sequences Used for Lung Imaging.

Parameter	3D Dixon	3D VIBE
Breath-hold position	Expiration	Inspiration/expiration
Orientation	Coronal*	Axial
TE (ms)	1.23/2.46	1.3
TR (ms)	3.6	3.4
TA (s)	19	17
Flip angle	10°	5°
Acquired image resolution (mm3)	4.1 × 4.1 × 2.6*	1.2 × 0.9 × 6
Reconstructed voxel size (mm3)	2.6 × 2.6 × 2.6*	0.9 × 0.9 × 3
Bandwidth (Hz/pixel)	965	543

^*Orientation and matrix size is fixed by default by vendor because sequence is used to create µ-map for attenuation correction. TA = time of acquisition, TE = echo time, TR = repetition time, VIBE = volumetric interpolated breath-hold examination, 3D = three-dimensional