Standard wedges vary in angle from which of the following degrees?

Standard wedges used in radiation therapy typically have angles that range from 15 to 60 degrees. This range allows for the modification of the radiation beam profile, helping to achieve better dose distribution in the target area while minimizing exposure to surrounding healthy tissues. Wedges can be used to effectively create a more uniform dose distribution across the treatment volume, especially when dealing with irregularly shaped tumors or differing tissue densities.

Using standard wedges within this specified range allows clinicians to tailor the therapy to individual patient needs, optimizing treatment outcomes. Wedges with angles less than 15 degrees or greater than 60 degrees are not standard and would not be commonly utilized or available in the typical clinical setting.