Table 1:

Pulse sequence parameters. Abbreviations: TR = repetition time, TE = echo time, VENC = velocity encoding parameter, FOV = field of view, Tsat = time gap between global saturation and start of background suppression, MLEV-4 = Malcolm-Levitt T₂-preparation scheme, bSSFP = balanced steady-state free precession, and BW = bandwidth.

Module	K-MOTIVE & db-K-MOTIVE
Phase contrast: radial acquisition	TR = 7.50 ms TE = 4.63 ms Flip angle = 12°; in dual-band, flip angles: α = β = 12° The polarity of the β-RF pulse alternates Slice separation ~ 100 mm VENC = 50 cm/s Golden angle = 111.25° FOV = 300 × 300 mm2 Number of readout samples = 300 Voxel size = 1 × 1 × 5 mm3 BW/pixel = 833 Hz/pixel Tsat = 2500 ms
	Spokes per interleaf = 144 Interleaves = 5 Total spokes = 720
Background suppression	Slice-selective saturation followed by 4 adiabatic inversion pulses 90°SS-180°SS-180°SS-180°NS-180°NS SS: slice-selective; NS: non-selective Ratio of inversion slab thickness to T2-prepared bSSFP imaging slice thickness = 1.5 SS inversion slab thickness = 18 mm Total duration = 1000ms Pulse times (ms): 0, 140, 450, 750, 940 In dual-band implementation, the first two SS adiabatic inversions are composed of the sum of two adiabatic inversion pulses, partially shifted in time.
T2-preparation	90°x…(90°x180°y90°x)4n…270°x360°-x MLEV-4 pattern: +y, +y, -y, -y All non-selective RECT pulses Five interleaves: n = 0, 1, 2, 3, sat* τ180 = 12 ms T2-preparation times = 0, 48, 96, 144, and ∞ ms * Saturated magnetization for a three-parameter fit of bSSFP signal
bSSFP Readout	Flip angle = 60°; in dual-band, flip angles: α = β = 60° The phase increments of the α- and β-RF pulses are +π/2 and –π/2, respectively, to modulate every other line of k-space by π Slice separation ~ 100 mm 10 catalyzation TRs Phase partial-Fourier factor = 50% 14 reference lines TR = 4.50 ms, TE = 2.25 ms FOV = 300 × 300 mm2 Reconstruction matrix = 200 × 200 Voxel size = 1.5 × 1.5 × 12 mm3 BW/pixel = 1250 Hz/pixel