Chapter 24, Problem 75A

Interpretation Introduction

Interpretation:

The detection of radiotracer needs to be explained.

Concept introduction:

A radiotracer is a radioisotope which emits radiations which are non-ionizing. It is used to detect the presence of an element.

Answer to Problem 75A

Radiotracer can be detected by placing body scanner and recording the $\text{γ}$ rays by computer program and images.

Explanation of Solution

Positron emission trans axial tomography (PET) is radiation-based medical diagnostic tool. In this procedure, a radiotracer which is decayed by positron emission is injected into the patient’s blood. Positrons emitted by the radiotracer cause gamma-ray emissions that are then detected by sensors surrounding the patient.

Conclusion

PET scans (positron emission tomography) are used for medical purposes like physiological activities like metabolism, blood flow, etc.