If you had a bright light shining at you, and you were wearing a body stocking, the shadow on the wall opposite the light is roughly what the X-Ray image should look like. (We are all big water balloons to X-Rays).

If the X-Ray were more powerful you can start to make out boney structures. The outside edge of your body would appear lighter since it was less dense in that spot (you are not as thick in the plane of the beam).

The imager is no doubt a real-time fluroscope, (like a live TV), and the images are not recorded digitally (it would take too much disk space).

Nevertheless, for a population with higher than average exposure to radiation (frequent flyers), it doesn't seem wise to subject ourselves to medically unnecessary X-Rays under any circumstances.

Welcome to Flyer Talk Science Saturday.