. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: Eur Radiol. 2017 Jul 7;28(1):133–142. doi: 10.1007/s00330-017-4956-z

Table 2.

Sodium acquisition sequence and reconstruction parameters

Parameters	Unit	Radial 3D (R3D)	IR WURST (IRW)
Number of Radial Projections	-	10,000	10,000
Repetition Time (TR)	ms	100	140
Echo Time (TE)	ms	0.4	0.4
Flip Angle (FA)	degree	90	90
Isotropic Field of View (FOV)	mm	200	200
Dwell Time	µs	80	80
Adiabatic Inversion Pulse Amplitude	Hz	-	240
Adiabatic Inversion Pulse Length	ms	-	10
Inversion Time (TI)	ms	-	24
Nominal Resolution^*	mm	2	2
Real Resolution^**	mm	3.3	3.3
Acquisition Time (TA)	min:s	16:44	23:25

The nominal (reconstructed) resolution is the size of the isotropic voxels chosen in the regridding algorithm for reconstructing the images from the 3D radial k-space trajectory.

^**

The real resolution is the resolution calculated from the usual resolution formula: resolution=1/(2×k_max), with k_max the maximal value of the k-space used for reconstructing the images.