Why is it important that radioisotopes used in diagnostic tests have short half-lives?

Question

Quizplus · Accepted Answer

Radioisotopes used in diagnostic tests emit radiation, which can be harmful to the patient if it persists for a long time. Therefore, it is important that these radioisotopes have short half-lives so that they decay quickly and minimize the harmful side effects of the radiation. Option A is incorrect because higher activity does not necessarily make the radioisotopes easier to monitor. Option C is incorrect as high energy is not a requirement for diagnostic tests. Option D and E are also not relevant factors in this context.

Why Is It Important That Radioisotopes Used in Diagnostic Tests