Two samples of a radioisotope were spilled in a nuclear laboratory. The activity of one sample was 8 kBq and the other 15mCi. Which sample produced the higher amount ofradiation?

A solution of selenium-75, a radioisotope used in the diagnosis of pancreatic disease, is found just prior to administration to have an activity of 44 μCi/mL. If 3.98 mL were delivered intravenously to the patient, what dose of Se-75 (in μCi) did the patient receive?

A typical chest X ray exposes a patient to an effective dose of 0.02 mSv. How many rem is this, and how many chest X rays would a patient have to receive before biological effects would be observed? (The limit from Table 11.6 is >25 rem.)

Match each property (1 to 3) with its unit of measurement. 1. activity2. absorbed dose3. biological damagea. rad

Two technicians in a nuclear laboratory were accidentally exposed to radiation. If one was exposed to 8 mGy and the other to 5 rad, which technician received more radiation?

b. Suppose a person absorbed 50 mrad of alpha radiation. What would be the equivalent dose in millisieverts?

a. The dosage of technetium-99m for a lung scan is 20. µCi/kg of body mass. How many millicuries of technetium-99m should be given to a 50.0-kg person (1 mCi = 1000 µCi)

Why are rems the preferred units for measuring the health effects of radiation?

A selenium-75 source is producing 300 rem at a distance of 2.0 m?b. What is its intensity at 25 m?