What is one usage of CT images in radiation therapy?

CT images play a significant role in radiation therapy, particularly in the area of electron density mapping. This function is crucial because accurate representation of the tissue characteristics is essential for dose calculations.

CT imaging provides detailed cross-sectional images of the body, allowing for the differentiation of various tissue types based on their electron densities. This information is vital in radiation therapy, as it helps in calculating the appropriate dose needed to target tumors effectively while minimizing exposure to surrounding healthy tissue. By using this electron density mapping, medical dosimetrists can create treatment plans that optimize dosage distribution and improve treatment outcomes.

Other applications of CT in radiation therapy, such as real-time imaging during treatment or patient positioning, are also important but do not directly utilize the specific data regarding electron density in the same manner. Therefore, the focused use of CT images for electron density mapping underscores their critical role in planning and delivering effective and safe radiation therapy treatments.