CT-based source localization in brachytherapy assists primarily with what?

CT-based source localization in brachytherapy is primarily used for target volume identification. This technique improves the accuracy of the treatment by allowing for precise localization of radioactive sources within or adjacent to the tumor. By utilizing CT imaging, medical dosimetrists can visualize the anatomy in detail, which aids in delineating the tumor boundaries and important surrounding structures. This enables personalized treatment plans that ensure the maximum dose is delivered to the target while minimizing exposure to healthy tissues, enhancing treatment efficacy and patient safety.

While monitoring treatment side effects, patient positioning, and reducing setup time are important considerations in brachytherapy, they are not the primary focus of CT-based source localization. Instead, CT imaging's strength lies in providing essential information for accurately identifying and contouring the target volume for optimal therapeutic outcomes.