radioactive tracer
Britishnoun
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
All the volunteers will have the current gold-standard tests for Alzheimer's which involve a specialised brain PET scan using a radioactive tracer, or a lumbar puncture to remove a sample of cerebrospinal fluid.
From BBC ● Jan. 18, 2026
It took about an hour on a weeknight after work, and afterward, Gluck made a throwaway joke to the technician: Am I glowing from the radioactive tracer?
From Slate ● May 2, 2025
PET is an imaging technique that uses a radioactive tracer to measure metabolic processes in the body.
From Science Daily ● Jan. 3, 2024
PET imaging requires injecting a radioactive tracer molecule into the bloodstream, and spinal fluid must be extracted with a needle inserted between vertebrae in the back.
From Scientific American ● Aug. 23, 2022
Because the equation doesn’t test kidney function directly, its developers compared its results with kidney filtration rates measured using a more definitive test, based on a radioactive tracer, that is too complex to perform routinely.
From Science Magazine ● Jul. 22, 2021
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
