In treatment planning, what is crucial when using wedges?

When utilizing wedges in treatment planning for radiation therapy, the specific angles of application are critical. Wedges are used to modify the dose distribution within the treatment area by altering the intensity of radiation delivered at various points. The angle of the wedge affects how the radiation beams intersect and the resultant dose profile.

Proper angle selection allows for the effective blending of radiation fields, ensuring that the target tumor receives an adequate dose while minimizing exposure to surrounding healthy tissues. If the angle is not accurately determined, it could lead to underdosing the tumor or overtreatment of adjacent normal structures. Therefore, selecting the correct angle of the wedge is essential for achieving optimal treatment outcomes and maintaining the safety and efficacy of the radiation therapy plan.