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Satre Stuelke, an artist-turned-medical-student, used CT scanners to create these images. He said his aim was to penetrate the metal, plastic or organic interiors of pop objects and foods, asking people to "think about how things are constructed." About his son's mechanical dog, shown at left, Mr. Stuelke said: "If you press the buttons on a wired remote, you can make it walk and bark."

Satre Stuelke