coding for Gadolimium contrast injection

When our physicians are performing a contrast injection of Gadolinium for an MR arthrogram, if they give us the amount of gadolinium contrast and it is less than 1ml, can we bill A9579 because the HCPS code states 1ml.( because this is a dilute mixture of gadolinium)
I'm just wondering because I haven't found any articles/bulletins etc... on such a scenario.