Radiopharmaceuticals for diagnosis and therapy

A method comprising:

• administering respective radiolabeled forms of a plurality of therapeutic agents to a patient, wherein two or more of the radiolabeled forms of the plurality of therapeutic agents are radiolabeled with a same radiotracer;
• determining information related to respective biodistributions of the respective radiolabeled forms of the plurality of therapeutic agents in the patient by performing simultaneous functional imaging of the respective radiolabeled forms of the plurality of therapeutic agents during a radioimaging procedure on the patient after administering the respective radiolabeled forms of the plurality of therapeutic agents, wherein performing simultaneous functional imaging of the respective radiolabeled forms of the plurality of therapeutic agents comprises analyzing differing kinetics of the respective radiolabeled forms of the plurality of therapeutic agents;
• and
• treating the patient by administering the one or more of the plurality of therapeutic agents to the patient at respective therapeutically-effective doses and withholding administering at least one other of the plurality of therapeutic agents.