The visual representation of an object, such as a body part or celestial body, for the purpose of medical diagnosis or data collection, using any of a variety of usually computerized techniques, such as ultrasonography or spectroscopy.
Psychology The use of mental images to influence bodily processes and to control pain, or to achieve a goal that one has visualized or imagined.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.