A Patient's Thyroid Gland Is to Be Exposed to an Average

question 99

Multiple Choice

A patient's thyroid gland is to be exposed to an average of 5.5 µCi for 16 days as an ingested sample of iodine-131 decays. If the energy of the β radiation is 9.7 × 10^-14 J and the mass of the thyroid is 32.0 g, what is the dose received by the patient? (1 rad = 1 × 10^-5 J/g; 1 Ci = 3.7 × 10¹⁰ disintegrations/s)

• A) 0.027 rads
• B) 85 rads
• C) 37 rads
• D) 23 rads
• E) None of the answers is correct.

---

Definitions:

Bartolome de Las Casas

A 16th-century Spanish friar and social reformer who advocated for the rights of indigenous peoples in the Americas.

Spanish Conquistadors

Explorers and soldiers from Spain who, during the 16th century, conquered much of the Americas and parts of what is now the southwestern United States.

English Control

The dominance or governance by England or Great Britain over certain territories, colonies, or geopolitical interests, historically through colonialism and imperialism.

Dutch Colony

Territories around the world that were controlled by the Netherlands from the 16th to the 20th century, notable for their trade networks and colonial influence.