My First Image
This is an image that I collected this week using photoacoustic
imaging. The basic idea is that you fire a laser into a material.
The laser heats a localized area of the material, which causes the
material to expand and give off a pressure wave. The pressure wave
can be detected by an ultrasound transducer which is then used to
reconstruct the above image. Very similar to ultrasound itself, but
uses lasers instead of sound. The image here is a PVA phantom
vessel into which I placed a giant graphite inclusion. Based on the
image, you can see where the graphite is located.
Only the graphite should be visible, but I had the laser turned up
so high that I got reflection back from the whole phantom. You
should not stick your hand in front of this laser. Zap.
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