Table 2: Technical and clinical evaluation of radial QISS-MRA versus Cartesian bSSFP-MRA in healthy volunteers.

All non-normally distributed values are given as median, first, and third quartile values. Interquartile range is abbreviated to IQR. The evaluation of pulmonary arterial branches was based on the scoring systems introduced in the section “image analysis”. The p-values were determined using Wilcoxon signed-rank test. The significant p-values are marked in bold.

Variable	Radial QISS-MRA	Cartesian bSSFP-MRA	p-value
	Median (IQR)
Signal-to-noise ratio (SNR)	227.5 (169.7, 286.3)	192.0 (160.1, 228.8)	0.09
Contrast-to-noise ratio (CNR)	216.6 (159.9, 273.6)	182.3 (152.1, 219.4)	0.09
Pulmonary arterial branches
Truncus pulmonalis	4 (4, 4)	2 (2, 3)	<0.0001
Arteria pulmonalis dextra	4 (4, 4)	3 (3, 3)	<0.0001
Arteria pulmonalis sinistra	4 (4, 4)	3 (2, 3)	<0.0001
Right upper lobe	4 (3, 4)	3 (3, 3)	<0.0001
Left upper lobe	4 (3, 4)	3 (2, 3)	<0.0001
Right middle lobe	3 (3, 4)	3 (2, 3)	<0.0001
Right lower lobe	4 (4, 4)	3 (3, 3)	<0.0001
Left lower lobe	4 (3, 4)	3 (3, 3)	<0.0001
Right upper lobe apical	3 (3, 4)	3 (3, 3)	<0.0001
Right upper lobe posterior	3 (3, 4)	3 (3, 3)	<0.0001
Right upper lobe anterior	3 (3, 4)	3 (2, 3)	<0.0001
Left upper apicoposterior	4 (3, 4)	3 (2, 3)	<0.0001
Left upper lobe anterior	3 (3, 4)	3 (2, 3)	<0.0001
Left upper lobe lingular	3 (3, 4)	3 (2, 3)	<0.0001
Right middle lobe lateral	3 (3, 4)	3 (2, 3)	<0.0001
Right middle lobe medial	3 (3, 4)	3 (2, 3)	<0.0001
Right lower lobe superior	4 (3, 4)	3 (2, 3)	<0.0001
Right lower lobe medial	3 (3, 4)	3 (3, 3)	0.0007
Right lower lobe anterior	3 (3, 3)	3 (3, 3)	0.05
Right lower lobe lateral	3 (3, 3)	3 (3, 3)	0.02
Right lower lobe posterior	3 (3, 3)	3 (3, 3)	0.26
Left lower lobe superior	3 (3, 4)	3 (2, 3)	<0.0001
Left lower lobe anteromedial	3 (3, 3)	3 (2, 3)	0.0002
Left lower lobe lateral	3 (3, 4)	3 (3, 3)	0.0009
Left lower lobe posterior	3 (3, 4)	3 (3, 3)	0.0005