As Lisa reaches out to give Antonio a handshake, she realised his hands were extremely cold. How was heat transfered in this scenario? a
Heat energy traveled from his hand to hers.
b
Heat energy traveled from her hand to his.
c
Heat traveled by the method of radiation.
d
Heat traveled by the method of conduction

The correct answer is: isotopes.

Explanation:

PET scan (positron emission energy) is an imaging technique that is used to help in the diagnosis of a disease by observing metabolic processes in the body.

PET scans, although very expensive, are of great utility in the fields of Oncology, Neurology and Cardiology.

Isotopes are atoms that share the same number of protons and electrons but differ in the number of neutrons. This gives the isotopes different properties than regular atoms. In PET, isotopes are radiotracers used to discern the biologic pathway of any compound.