BSIP, LAURENT / SCIENCE PHOTO LIBRARY BSIP, LAURENT / SCIENCE PHOTO LIBRARY
CT scanning. Patient undergoing a CT scan. CT (computed tomography) scanning is a diagnostic technique in which X-rays are passed through the body at different angles. A bottle of the drug Iopamiron is in the foreground. Iopamiron is administered intravenously through a drip prior to CT scanning, to make some areas of the body opaque to the X-rays. A computer then produces a cross- sectional image of the tissue being examined. Also known as CAT (computed axial tomography) scanning, this technique provides clearer and more detailed information about body tissues than X- rays used by themselves. Photographed at Chatellerault Hospital, Vienne, France.
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