. Author manuscript; available in PMC: 2017 Oct 1.

Published in final edited form as: Magn Reson Med. 2015 Oct 28;76(4):1136–1148. doi: 10.1002/mrm.26010

Table 1.

Parameters for the labeling modules of VSASL used in this study with FT-VS applying to both FT-VSS and FT-VSI.

	T_VS (ms)	N_step	T_step (ms)	T_ref (ms)	T_G (ms)	T_ramp (ms)	G_max (mT/m)	T_gap (ms)	Δ (ms)	V_c (cm/s)	b-value (s/mm²)
DRHT	20.0	1	20.0	5.00	0.60	0.30	25.0	1.59	10.0	3.9	0.1
FT-VS	48.0	8	6.0	0.87	0.60	0.30	29.0	0.34	3.0	2.8	0.2
FT-VS	64.0	8	8.0	0.87	0.60	0.30	21.8	0.79	4.0	2.8	0.2

T_VS: duration for the entire VS pulse train; T_step: duration for each velocity encoding step; T_ref: duration of each refocusing pulse; T_G: duration of each gradient lobe; T_ramp: ramp time for each gradient lobe; G_max: maximum gradient strength of gradient lobes; T_gap: the gap between the gradient and the following RF pulse; Δ: the separation between gradient lobes of the same polarity; V_c: cut-off velocity.