Table 1.

Protocol parameters for (left) the free‐breathing radial Dixon‐RAVE and (right) the breath‐hold Cartesian reference acquisition

Parameters	Field strength: 3 T
	Protocol 1: Radial	Protocol 2: Cartesian
Sequence	Dixon‐RAVE	VIBE
Number of echoes	6	6
First echo ${\text{TE}}_1$ (ms)	1.23	1.09
Echo spacing ΔTE (ms)	1.23	1.23
Repetition time TR (ms)	8.75	9
Flip angle	$5^{\circ }$	$4^{\circ }$
Field‐of‐view ( ${\text{mm}}^3$)	410 × 410 × 260	332 × 380 × 192
Base resolution (pixels)	256 × 256	160 × 140
Pixel size ( ${\text{mm}}^2$)	1.6 × 1.6	1.2 × 1.2 (interp.)a
Slice thickness (mm)	5	6 (acquired); 3 (interp.)c
Slice resolution (%)	100	50
Readout mode	bipolar	bipolar
Bandwidth (Hz/px)	1090	1080
Number of slices	48‐64	64‐96
Averages	1	1
Radial views	400	‐
Radial sampling	Golden‐angle	‐
Total measurement time	3 minutes 17 second‐4  minutes 13 seconds	14 seconds‐20 secondsb

Note: For the radial acquisition, the total measurement time includes the gradient calibration time.

^aAcquired pixel size: 2.4 × 2.4 mm.

^b4‐fold accelerated using CAIPIRINHA (twofold acceleration along $k_y$ as well as $k_z$).

^cThe Cartesian protocol applied a “slice resolution" of 50%, ie, only 50% of the phase encoding steps are acquired and zero‐padded, resulting in 2 times higher nominal slice resolution (interpolated).