To get the level of detail he needs, Veasey has to expose objects to far more radiation than is produced by a typical medical X-ray. That rules out using actual living humans as models. He's worked with a skeleton named Frida for years. She was originally used by radiologists-in-training but has now become an art star of sorts, playing many different roles (she's even populated an entire bus--while driving it at the same time). Veasey poses Frida and X-rays her separately; then he drops her into an image, using Photoshop.