BSIP EDWIGE / SCIENCE PHOTO LIBRARY BSIP EDWIGE / SCIENCE PHOTO LIBRARY
X-ray examination. Young child is readied for an X-ray procedure by a radiographer. The radiographer will position the X-ray emitter (at upper right) over the part of the patient's body to be scanned. An X-ray plate with film is fitted beneath the bed to capture the image. X- rays produce images of bones, organs and internal tissues. Low dose X-rays are passed through body tissues to cast images onto a film plate or a fluorescent screen. Body tissues absorb X-rays differently depending upon their density. Bones, which are dense, absorb X-rays well and therefore appear white on a film; soft tissues absorb X- rays less and appear dark.
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