The goal of radiation therapy is to spare normal tissue around a tumor and to deliver:

The primary objective of radiation therapy is to effectively target and destroy tumor cells while minimizing damage to the surrounding healthy tissue. This is achieved by delivering the highest possible dose to the tumor, which enhances the likelihood of eradicating cancerous cells.

High doses of radiation are necessary because cancer cells typically have a higher proliferation rate and are more sensitive to radiation than normal cells. By focusing on delivering maximum radiation to the tumor, clinicians can improve treatment outcomes, increase the chances of tumor control, and potentially enhance the patient’s prognosis.

In the context of radiation therapy, minimizing the dose to normal tissues is also crucial, but the main goal remains delivering a sufficiently high dose to the tumor itself to achieve therapeutic effectiveness. This focus on high dosing helps explain why the selected answer is considered correct in the objectives of radiation treatment strategies.