4. Two radioisotopes of iodine are used in nuclear medicine.Iodine-123 is a gamma emitter with a half-life of just over 13hours. Iodine-131 is a beta and gamma emitter with a half-life ofapproximately 8 days. The thyroid gland accumulates iodine. One ofthe above isotopes is used for imaging and diagnosis of thyroiddisorders. The other is used for treatment of cancer of the thyroidgland. Which isotope is used for which purpose and why?
5. Technetium-99 is a gamma emitter with a half-life of 6 hours.It is used for imaging of heart function. A patient receives aninjection containing 12 mg of Technetium-99 at 6:00 a.m. onTuesday. How much remains at 9:00 p.m. the next day.
4. Two radioisotopes of iodine are used in nuclear medicine. Iodine-123 is a gamma emitter with a half-life of just over
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4. Two radioisotopes of iodine are used in nuclear medicine. Iodine-123 is a gamma emitter with a half-life of just over
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