A Hospital Patient Has Been Given a Sample of ¹³¹I

question 96

Multiple Choice

A hospital patient has been given a sample of ¹³¹I ,which has a half-life of 8.04 days.This sample is decaying at 5.9 times the acceptable level for exposure to the general public.How long must the patient wait for the decay rate of the sample to reach the acceptable level?

• A)21 days
• B)14 days
• C)9.9 days
• D)8.9 days

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Definitions:

Thalamus

A structure in the brain that relays sensory and motor signals to the cerebral cortex, playing a key role in regulating consciousness, sleep, and alertness.

Hippocampus

A major component of the brain involved in memory formation and spatial navigation, located in the medial temporal lobe.

Cortex

The outer layer of the cerebrum of the brain, involved in complex functions such as thought, memory, and consciousness.

Thalamus

A brain structure acting as a relay station, directing sensory and motor signals to the cerebral cortex, except for the sense of smell.