Table 2.

Chosen values for the prior distributions on each parameter based on some initial experience fitting to 2D VEPCASL angiography data. Note that the prior on A has a mean of zero to prevent large values being estimated in noisy voxels. s is also tightly constrained to discourage very small sharpness fits which approximate a flat curve in noisy voxels. Note that the priors on parameters A and σ depend on the scaling of the images and thus will vary between scanners and coils.

Parameter (X)	Mean (μX)	Standard Deviation (σX)	Units
A	0	30	Arbitrary Scanner Units
δt	500	500	ms
s	10	2	s−1
p	10	10	ms
σ	2	0.5	Arbitrary Scanner Units