This reconstructed image reflects the distribution and relative concentration of radioactive tracer elements present in the organs and tissues imaged.
22.
The new technique, scintimammography, costs about dlrs 600 and employs a radioactive tracer first used to detect heart disease.
23.
Kamen taught the faculty how to use radioactive tracer materials in research, and his own interests gradually shifted into biochemistry.
24.
In the absence of gallbladder disease, the gallbladder is visualized within 1 hour of the injection of the radioactive tracer.
25.
At one point, the CIA considered injecting its own agents with radioactive tracers to provide " positive identification ."
26.
It has found some limited uses as a radioactive tracer and a precursor for various nuclear reactions to produce useful plutonium isotopes.
27.
Radioactive tracer isotopes are injected with hydraulic fracturing fluid to determine the injection profile and location of fractures created by hydraulic fracturing.
28.
Injection of radioactive tracers along with the fracturing fluid is sometimes used to determine the injection profile and location of created fractures.
29.
Radioactivity associated with hydraulically fractured wells comes from two sources : naturally occurring radioactive material and radioactive tracers introduced into the wells.
30.
For two years, the scientists captured 74 adult chickadees of both sexes and injected them with a radioactive tracer compound called thymidine.
