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.

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Definitions:

Person-Situation Controversy

The debate in psychology regarding the influence of personality versus situational factors on an individual's behavior.

Enduring Inner Influences

Long-lasting factors within an individual that shape their behavior, thoughts, and emotions.

Reciprocal Determinism

The interacting influences of behavior, internal cognition, and environment.

Multidirectional Influences

The concept that development is shaped by bidirectional interactions among various factors, including biological, psychological, and socio-cultural forces.