0:00

So here's some examples of a more significant hemodynamic stenosis on the left.

0:06

This is a greater than 70% ICA stenosis.

0:09

So you can see here as we are in the proximal left ICA, we really have some pretty

0:15

dense shadowing plaque. If you had to guess, you can really see that the channel

0:19

appears to be pretty narrowed here, and then as we move towards the color Doppler

0:24

images, you can start to see how that's happening, as well as some areas of

0:28

turbulence. And so as we start to measure these areas of flow, you can see

0:33

when we put the Doppler gate within here, the waveform is showing us a velocity of

0:39

243 centimeters per second. And then as we kind of go further down

0:46

in a similar spot, we start to see elevations all the way up to almost 310

0:51

centimeters per second. So those are pretty significant velocity elevations, and

0:55

that would be consistent with a greater than 70% stenosis.

1:00

You can see we have a bit of a more normal return velocity just beyond this point,

1:05

but again, we sort of want to focus on the highest velocity that we find within

1:09

this area, and that's consistent with greater than 70% stenosis.