Which applications, either for diagnostic purposes or for therapeutic purposes, involve radioactive materials placed in the body? Check all that apply.radiopharmaceuticalsMRIlaser eye surgeryexternal beam radiation therapylithotripsybrachytherapyradioisotope imaging

Radiopharmaceuticals and radioisotope imaging use radioactive substances introduced into the body, often to diagnose or track how organs function. Brachytherapy treats disease by placing a radioactive source inside or next to the affected area. External beam radiation is delivered from outside the body, while MRI, laser eye surgery, and lithotripsy do not place radioactive materials in the body.

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