Which of the following may be used in PET scans as biological tracers that can be followed through the body?
A) nucleic acids
B) proteins
C) electrons
D) ions
E) radioisotopes

Question

Quizplus · Accepted Answer

PET (positron emission tomography) scans use radioisotopes as biological tracers. These tracers are injected into the body and monitored as they emit positrons, which can be detected and used to create images of bodily processes such as metabolism and blood flow. Nucleic acids, proteins, electrons, and ions are not commonly used as tracers in PET scans.

Which of the Following May Be Used in PET Scans