A wedge often functions as a_______

A wedge is used as a compensator for a sloping surface primarily in radiation therapy to create a more uniform dose distribution in the treatment area. When treating irregularly shaped tumors or anatomical variations, the use of wedges can help adjust the intensity profile of the radiation beam. By using a wedge, the radiation dose can be increased in the area where the tissue is thicker or where more radiation is needed, while simultaneously reducing the dose in areas where the tissue is thinner. This helps to ensure that the prescribed dose is delivered more evenly across the treatment volume, which is crucial for effective therapy and minimizing damage to surrounding healthy tissues.

In the context of dosimetry and treatment planning, compensators like wedges are essential tools that allow for a better match between the radiation dose distribution and the anatomical contours of the patient. Proper utilization of wedges can significantly enhance treatment outcomes.