What are the end diastolic velocities that you use for determining severity?

>From all of the literature that I have read, velocities for measuring diameter
reduction only apply to velocity increases detected within the first 5 mm of the
ICA.

I have four different charts on the bulletin board in our lab for the estimation
of diameter reduction and they all vary (don't panic, we only go by one).  I
still think frequency is more accurate than velocity (another can of worms!).

I'm interested in what other Flownetters use for their criteria.

JP Hughes, RVT, RCVT
Easton Hospital
Easton, PA