| 单词 | positron emission tomography |
| 释义 | positron emission tomographynounthe process of producing a PET scan. Compare PET scanner. Origin of positron emission tomographyFirst recorded in 1975–80 Words nearby positron emission tomographypositive theology, positive vetting, positivism, positivity, positron, positron emission tomography, positronium, posole, posology, poss., posse Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for positron emission tomographypositron emission tomography nouna technique for assessing brain activity and function by recording the emission of positrons from radioactively labelled substances, such as glucose or dopamine Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for positron emission tomographypositron emission tomography n.Tomography in which a computer-generated image of local metabolic and physiological functions in tissues is produced through the detection of gamma rays that are emitted when introduced radionuclides decay and release positrons. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for positron emission tomographypositron emission tomography Tomography in which a computer-generated image of metabolic or physiologic activity within the body is produced through the detection of gamma rays that are emitted when introduced radionuclides decay and release positrons. The images are used in the evaluation of coronary artery disease, epilepsy, and other medical disorders. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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