These images can be viewed with the cross eye method. This is a technique which can be mastered with lots of practising (and headache) or you may be a natural like lucky me.

The images of the blood vessels have been made with an MRI scanner. In my work as an MRI Application Specialist I get to see these images on a daily basis. The images are called MIP's (Maximum Intensity Projections) and are part of a series where a projection is made every 10 degrees. Here two images are shown with a difference of 10 degree rotation. Technically speaking it is not a real stereo image, but when viewed with cross eyed technique one can see depth beautifully.