The term theranostics is derived from the phrases "treatment" and "diagnostic" in English. It combines diagnostic, targeted therapy, and treatment response monitoring. Because they are patient-oriented rather than disease-oriented, theranostic applications enable the move from a traditional treatment method to a new "personalised medicine" approach. Many of the diagnostic and therapeutic techniques performed in nuclear medicine clinics are of theranostic character. The earliest theranostic agent in nuclear medicine history is radioactive iodine, which is utilised for thyroid disease therapy and imaging.
In 1946, radioactive iodine treatment was first utilised to treat thyroid cancer patients. Since that time, Theranostics compounds have been regularly created and employed in medicine; they are being used today, and the results are outstanding. Images that aid in diagnosis and therapy can be obtained for theranostic techniques. When the same agent is utilised for both targeted and non-targeted therapy. This approach may aid in the elimination of unnecessary treatments and/or the optimization of treatment selection when standard therapy options are ineffective or insufficient.
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