Technetium-99m is a radioisotope used in a variety of diagnostic tests. Technetium-99m has a short half-life (6 hr) . The advantage of a short half-life for diagnostic purposes is
A) the radioactivity is easier to monitor.
B) the radioactivity does not linger in the body.
C) the radioactivity lasts for a long time.
D) the chemical reactions induced by the technetium are more rapid.
Correct Answer:
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