Comprehensive Evolve Cancer Treatment & Care Practice Exam 2025 – Your All-in-One Guide to Mastering Cancer Care!

Chemotherapy is indeed not a form of radiation therapy delivery because it involves the use of chemical substances to destroy cancer cells, rather than using radiation. Radiation therapy focuses on using high-energy waves, such as X-rays or particles, to target and kill cancer cells, which is distinct from the mechanism of action in chemotherapy.

External beam radiation and brachytherapy are both recognized forms of radiation therapy. External beam radiation delivers radiation from outside the body to the treatment area, while brachytherapy involves placing radioactive sources inside or very close to the tumor. Radioembolization is a specialized method that combines radiation with embolization to selectively deliver radioactive isotopes directly to the tumor through the blood supply, also classifying it as a form of radiation therapy. Thus, chemotherapy stands apart as it does not involve radiation delivery at all.