What is the main goal of using various treatment fields in radiotherapy?

The primary goal of using various treatment fields in radiotherapy is to minimize the radiation dose to normal tissues surrounding the tumor. This strategic approach allows clinicians to optimize the delivery of radiation to the tumor while sparing as much healthy tissue as possible. Different treatment fields can be adjusted in shape, angle, and intensity to conform to the tumor's geometry, thereby enhancing the therapeutic ratio.

This method not only helps in reducing potential side effects and complications associated with radiation exposure to normal tissues but also enhances the likelihood of successful tumor control. A thoughtful combination of treatment fields can effectively cover the target volume while improving the overall safety and effectiveness of the therapy.