Suppose Oxygen-15 Is Used as the Tracer Isotope in a PET

question 54

Multiple Choice

Suppose oxygen-15 is used as the tracer isotope in a PET (positron emission tomography) study. Which of the following best describes how the PET scanner traces the oxygen-15 after it has been injected into a participant's bloodstream?

• A)The oxygen-15 nuclei decay and emit electrons, the electrons collide with positrons to create gamma rays, and the gamma rays are then detected by the PET scanner.
• B)The oxygen-15 nuclei decay and emit positrons, and the positrons are then detected by the PET scanner.
• C)The oxygen-15 nuclei decay and emit electrons, and the electrons collide with photons, creating positrons which are then detected by the PET scanner.
• D)The oxygen-15 nuclei decay and emit positrons, the positrons collide with electrons to create gamma rays, and the gamma rays are then detected by the PET scanner.

Understand the rights of subjects in nursing research.

Define key terms related to the research population and sampling.

Differentiate between qualitative and quantitative research approaches and their methodologies.

Identify considerations of significance, usefulness, ethical aspects, and measurement reliability in nursing research.

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Definitions:

Homeostasis

The self-regulating process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival.

Electrical Signals

Impulses generated by movements of ions across cell membranes, used for communication between neurons or between nerves and muscles.

Neural Tissue

Specialized tissue making up the central and peripheral nervous system, consisting of neurons and glial cells.

Environmental Changes

Alterations in the external surroundings that can influence ecosystems and human activities.