Idle thought:

[cdave]

Colour is (badly) defined as the relative amount of one three frequencies of light waves reflected off a visible point.

Could you make a false colour ultrasound image by using three different frequencies of ultrasound? If so would they be of any use?

Comments

[the-magician.livejournal.com]

Red/Green 3D glasses would appear to be the obvious first answer to that.

And that doesn't necessarily need different frequencies if you can use two transmitters and time slice between then and combine the two to build a three d virtual image ...

Now it may be that different frequencies penetrate differently so you might be able to do the "looking under the skin" bit ... but I have no knowledge of that.

[cdave]

There's already 3D ultrasoundout there.

But it just still just shows a monochrome image of how the much of the ultrasound signal is reflected by boundaries between different organs.

What I was envisioning was that different boundries, may reflect with the same intensity at one frequency, and thus have the same brightness in the monochrome. But at different intensities in other frequencies, thus appearing as a different colour in the composite false colour image.