A universal wedge is defined as a wedge that _____

A universal wedge is designed to be versatile and adaptable for use in a variety of clinical situations, particularly with different field sizes. It has a specific geometry that allows it to be employed in numerous setups without needing custom modifications for each treatment. This characteristic makes the universal wedge a practical tool for delivering precise radiation therapy across various types of tumors and patient anatomies.

In practice, the term "universal" implies that this wedge can seamlessly integrate into different treatment plans, accommodating adjustments to field sizes without compromising the quality of dose distribution. This flexibility is essential in radiation therapy, where each patient's anatomy and tumor location may require different beam configurations to achieve optimal treatment outcomes.