In Thyroid Scans, ¹²³I Is Used

question 22

Short Answer

In thyroid scans, ¹²³I is used. Its daughter nucleus is stable. How long will it take until the amount of ¹²³I left is 5% of the original amount? The half-life of ¹²³I is 13 hours.

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Definitions:

Intermittently Reinforced

A conditioning schedule where only some of the responses made are followed by reinforcement, known to produce behavior that is more resistant to extinction than continuous reinforcement.

Parents

The caregivers of offspring in their own species; in humans, typically refers to a child's biological or adoptive mother and father.

Extinction

in psychology, refers to the gradual disappearance of a conditioned response when the conditioned stimulus is no longer paired with the unconditioned stimulus.

Resistance To Extinction

The persistence of learned behavior or response even after the original stimulus (e.g., reinforcement) is no longer present.